IS 814:2004

Indian Standard i
;
COVERED ELECTRODES FOR MANUAL METAL
ARC WELDING OF CARBON AND CARBON
MANGANESE STEEL — SPECIFICATION
(Sixth Revision) :,
;:
{
ICS 25.160 .20;77.080.20

0 BIS 2004

BUREAU OF INDIAN STANDARDS

MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG
NEW DELHI 110002

September 2004 Price Group 9

,* .-
Welding General Sectional Committee, MTD 11

FOREWORD
This Indian Standard (Sixth Revision) was adopted by the Bureau of Indian Standards, after the draft finalized by
the Welding General Sectional Committee had been approved by the Metallurgical Engineering Division Council.
This standard was first published in 1957 and subsequently revised in 1963, 1967, 1970, 1974 and 1991. While
reviewing the standard in the light of experience gained during these years, the Committee decided to revise it to
bring it in line with the present practices being followed by the Indian and overseas industry.
In this revision, the following changes have been made:
.
a) Semibasic type of covering has been included.
b) Chemical analysis of basic and semibasic classification has been provided.
c) Percentage elongation for ‘O’ designating digit has been included.
In the formulation of this standard due weightage has been given to international co-ordination among the standards
prevailing in different countries in addition to relating it to the practices in the field in this country. This has been
met by deriving assistance from the following publications:
a) ISO 2560:1973 Covered electrodes for manual arc welding of mild steel and low alloy steel—
Code of symbols for identification
b) BS 639:1986 Covered carbon and carbon manganese steel electrodes for manual metal arc
welding
c) ANSUAWSA 5.1-1991 Covered carbon steel arc welding electrodes — Specification
In reporting the results of a test or analysis, made in accordance with this standard, if the final value, observed or
calculated, is to be rounded off, it shall be done in accordance with IS 2:1960 ‘Rules for rounding off numerical
values (revised’.

..
 IS 814:2004

Indian Standard
COVERED ELECTRODES FOR MANUAL METAL
ARC WELDING OF CARBON AND CARBON
MANGANESE STEEL — SPECIFICATION
(Sixth Revision)
1 SCOPE IS No. Title

This standard specifies the requirements for covered 1608:1995 Mechanical testing of metals —
carbon and carbon manganese steel electrodes for Tensile testing (second revision)
carbon and carbon manganese steel, including 1757:1988 Method for charpy impact test
hydrogen controlled electrodes for manual metal arc (V-notch) for metallic materials
welding of mild and medium tensile steels including (second revision)
structural steels, depositing weld metal having a tensile 1977:1996 Low tensile structural steel (third
strength not more than 610 MPa. revision)
Electrodes designed specifically for repair welding, 2002:1992 Steel plates for pressure vessels for
often marketed in India as ‘low heat input’ electrodes intermediate and high temperature
are not covered in this standard. service including boilers (second
revision)
Ilmenite type electrodes are being used fairly widely
2062:1999 Steel for general structural purposes
in few other countries. There appears to be a trend to
@fib revision)
use ihnenite as an ingredient of the covering in our
country also. Provision for a separate class for such 2879:1998 Mild steel for metal arc welding
electrode may be considered at a later stage. electrodes (third revision)
NOTE — For weld metal with tensile strength higher than 3039:1988 Structural steel for construction of
610 MPa, a reference maybe made of IS 1395. hulls of ship (second revision)
2 REFERENCES 8500:1991 Structural steel—Micro-alloyed
(medium and high strength qualities)
The following standards contain provisions which — Specification (jlrst revision)
through reference in this text constitute provision of
11802:1986 Method for determination of
this standard. At the time of publication, the editions
diffusible hydrogen content of
indicated were valid. All standards are subject to
deposited weld metal from covered
revision and parties to agreements based on these electrodes in welding mild and low
standards are encouraged to investigate the possibility alloy steels
of applying the most recent editions of the standards
indicated below: 13043:1991 Covered manual metal arc welding
electrodes — Determination of
IS No. Title efficiency, metal recovery and
812:1957 Glossary of terms relating to welding depositim coefficient
and cutting of metals 13851:1993 Storage and redrying of covered
1182:1983 Recommended practice for electrodes before use —
radiographic examination of fusion Recommendations
welded butt joints in steel plates 3 TERMINOLOGY
(second revision)
For the purpose of this standard, the definitions given
1387:1993 General requirements for the supply
in IS 812 and the following definitions shall apply.
of metallurgical materials (second
revision) 3.1 Weld Slope — It is the angle formed between the
1395:1982 Low and medium alloy steel covered lines of the weld root and a horizontal reference plane.
electrodes for manual metal arc Slope may be measured either clockwise or
welding (third revision) artticlockwise and either above or below the horizontal
plane between 0° and 90°.
1599:1985 Method for bend test (second
revision) 3.2 Weld Rotation —The rotation of weld is the angle

1
IS 814:2004

formed between upper portion of vertical reference c) Letter ‘X’ indicating the radiographic quality
plane passing through the weld root and a point on the (see 5.9).
face of weld equidistant from both the edges of weld. NOTE — Examples illustrating for establishing electrodes
Rotation may be measured either clockwise or coding from the initial test results have been given in
anticlockwise between 0° and 180°. Annex A.

3.3 Weld Position — The welding position is given 5.2 Type of Covering
by the combination of weld slope and weld rotation Type of covering shall be indicated by the following
(see 5.5.1). letters:
4 SUPPLY OF MATERIALS A – Acid
B – Basic
General requirements relating to the supply of covered C – Cellulosic
electrodes for metal arc welding shall be as laid down R – Rutile
in IS 1387. RR – Rutile, heavy coated
SB – Semibasic
5 CLASSIFICATION
NOTE — The characteristics of each type of the covering and
5.1 Coding coating ratio are described in Annex B for guidance only.

Classification of electrodes shall be indicated by the 5.3 Strength Characteristics

coding system of letters and numerals as given The combination of ultimate tensile strength and yield
in 5.1.1 and 5.1.2 to indicate the specified properties strength of the weld metal deposited shall be indicated
or characteristics of the electrodes. by the digit 4 and 5 (see Table 1).
5.1.1 Main Coding
Table 1 Designation of Strength Characteristics
Itconsists of the following letters and numerals and
Designating Ultimate Tensile Yield Strength
shall be followed in the order stated:
Digit Strength MPa, h4in
a) A prefix letter ‘E’ shall indicate a covered MPa
electrode for manual metal arc welding, (1) (2) (3)
manufactured by extrusion process;
4 410-540 330
b) A letter indicates the type of covering (see 5.2);
5 510-610 400
c) first digit indicates ultimate tensile strength in
combination with the yield stress of the weld 5.4 Elongation and Impact Properties
metal deposited (see 5.3);
The combination of percentage elongation and impact
d) Second digit indicates percentage elongation in properties of the weld metal deposited for the two tensile
combination with the impact values of the weld ranges (see Table 1) shall be as given in Table 2.
metal deposited (see 5.4);
5.5 Welding Position
e) Third digit indicates welding position(s) in which
the electrodes may be used (see 5.5) and; The welding position or positions in which the electrode
f) Fourth digit indicates the current conditions in can be used as recommended by the manufacturer shall
be indicated by the appropriate designating digits as .
which the electrode is to be used (see 5.6).

I
follows:
5.1.2 Additional Coding a) All positions;
The following letters indicating the additional properties b) All positions except vertical down;
J
of the electrodes maybe used, if required: c) Flat butt weld, flat fillet weld and horizontal/
a) Letters H 1, H2 and H3 indicating hydrogen vertical fillet weld;
controlled electrodes (see 5.7); d) Flat butt weld and flat fillet weld;
b) Letters J, K and L indicating increased e) Vertical down, flat butt, flat fillet and horizontal
metal recovery, as effective electrode; and vertical fillet weld; and

‘Efficiency (EE)’ as per IS 13043 in the o Any other position or combination of positions
following range (see 5.8) not classified above.

J = 110-129 percent; 5.5.1 Welding positions in detail have been described

in Annex C.
K = 130-149 percent; and
L = 150 percent and above. 5.5.2 Where an electrode is coded as suitable for vertical

- +...-.
 IS 814:2004

and overhead positions, it maybe considered that sizes 5.6 Welding Current and Voltage Conditions
larger than 4 mm are not normally used for welding in
The welding current and open circuit voltage conditions
these positions.
on which the electrodes can be ollerated as
5.5.3 An electrode shall not be coded as suitable for a recommended by the manufacturer shall be indicated
particular welding position unless it is possible to use by the appropriate designation digits as given in
it satisfactorily in the position to comply with test Table 3. Welding current and voltage conditions have
requirements of this standard. been described in Annex D.

Table 2 Combination of Percentage Elongation and Impact Strength

(Clauses 5.4 and 8.3; and Table 9)
Designating Digit Percentage Elongation on Impact Strength
Gauge Length 5.65 ~, Mirr JPC, Min

(1) (2) (3)

ForTensile Range410-510 MPa

o 16 No impactrequirements
1 20 47 JI+27T
2 22 41 J/+OY
3 24 47 JI-20%2
4 24 27 J/-3O”C

ForTensile Range 510-610 MPa

o 16 No impact requirements
1 18 47 JI+27W
2 18 47 J/+O”C
3 20 47 JI-2WC
4 20 27 JI-3WC
5 20 27 JI-4CW
6 20 27 J/-46”c
NOTE — ~S7 is the cross-sectional area of test piece.

Table 3 Welding Current and Voltage Conditions

(CIause 5.6; and Table 10)
Designating Digit Direct Current Recommended Alternating Current
Electrode Polarity;) Open qrcuit Voltage
V, Min
(1) (2) (3)
(p + Not recommended
1 +or - 50
2 50
3 + 50
4 +or- 70
5 70
6 + 70
7 +or - 90
8 90
9 + 90
NOTE – The frequency of the alternating current is assumed to be 50 or 60 Hz. The neeessary open circuit voltage when electrodes are
used on direct current is closely related to dynamic characteristics of the weldhg power source. Consequently no indication of the
minimum open circuit voltage for direct current is given.
I) positive polarity (+) Negative polarity (-)
4 Symbol Ois reservedfor electrodesused exchssivety Orldirect Current.

3
IS 814:2004

5.7 Hydrogen Controlled Electrodes from covering for enabling it to be gripped by the
electrode’s holder as specified below:
The letters H 1, H2 and H3 shall be included in the
classification as a suffix for those electrodes which Electrode Size Bare Length
will give diffusible hydrogen in ml/100 g when
determined in accordance with IS 11802 as given Minimum Maximum
below: mm mm mm
H 1 = Up to 15 ml diffusible hydrogen 1.6t03.15 15 30
4.0 to 8.0 20 40
H2 = Up to 10 ml diffusible hydrogen
H3 = Up to 5 ml diffusible hydrogen 7.2.2 Arc Striking End
NOTE — For F13,glycerin method shall not be used. The arc striking end of the electrode shall be bare and
permits easy striking of the arc. The distance from the
5.8 Increased Metal Recovery arc end to the first point where the fill cross-section of
the covering prevails shall not exceed the following
The letters J, K and L shall be included in the
limits:
classification as a sufllx for those electrodes which have
appreciable quantities of metal powder in their coating For all classifications — 1/2 core wire diameter or
and give increased metal recovery with respect to that 2.0 mm, whichever is less
of core wire melted in accordance with the range given
in 5.1.2(b). Table 4 Sizes and Lengths of Electrode
(Clauses 7.1 and 7.1.2)
The metal recovery shall be determined as effective
electrode efficiency (EE as per the method given in Size Length
Is 13043). mm mm
(1) (2)
5.9 Radiographic Quality Electrodes
1.6 150 or 200 or 250
The letter ‘X’ shall be included in the classification as 2.0 200 or 250 or 300 or 350
a suffix for those electrodes which deposit radiographic 2.5 250 or 300 or 350
quality welds (see 9.6).
3.15 350 or 450
6 CORE WIRE FOR ELECTRODES 4.0 350 or 450
5.0 350 or 450
The core wire used for the manufacture of electrodes
shall conform to IS 2879. 6.3 350 or 450
8.0 350 or 450
7 DIMENSIONS AND TOLERANCES

7.1 Size and Length 7.3 Concentricity of Flux Covering with Core
Wire — Tolerance
The size of an electrode shall be designated by the
nominal diameter of the core wire expressed in The flux covering on the electrode shall be uniform
millimetres. Sizes of electrode and corresponding and concentric with the core wire. The tolerance for
lengths of electrodes shall be as given in Table 4. concentricity of the covering (see Fig. 1) shall be such
that the maximum core pltis one covering dimension
7.1.1 The tolerance on the specified diameter of core shall not exceed the minimum core plus one covering
wire shall be+ 0.05 mm. The tolerance on the specified dimension by more than:
length of electrode shall be *3 mm.
a) 5 percent of the mean of two dimensions for
7.1.2 Sizes and lengths of electrode other than those EBXXXX and ESBXXXX class electrodes,
mentioned in Table 4 may be supplied subject to b) 4 percent of the mean of two dimensions for
mutual agreement between the manufacturer and the ERXXXX, ERRXXXX and EAXXXX class
purchaser. The tolerance in such cases shall be agreed electrodes, and
to between the manufacturer and the purchaser.
c) 3 percent of the mean of two dimensions for
7.2 Bare Length ECXXXX class electrodes.

7.2.1 Contact End 7.4 Core wire and coverings shall be free from defects
which would interfere with the uniform welding
The contact end of the electrode shall be clean and free performance of the electrode.
 IS 814:2004

particular welding position:

WIRE a) Initial tests,
b) Periodic tests, and
c) Quality control tests.
COVERING
8.1.1 An electrode suitable for operation on a.c. or d.c.
shall be tested on a.c.
8.1.2 When an electrode of a particular nominal size is
manufactured in more than one lengths, the electrode
used for the tests shall be longest manufactured.
8.1.3 The parent metal used for test plates shall conform
to the requirements specified in Annex E.
All dimensions in millimetres. 8.2 Chemical Analysis
FIG, 1 PERMISSIBLETOLERANCESFOR FLUX COVERING The sample for analysis shall be taken from weld metal
obtained with the electrode. The result of the analysis
A = maximum core plus one covering dimension, and shall meet the requirements of Table 5.
B = minimum core plus one covering dimension. ‘.
8.3 Initial Tests
5 (A+ B) for These are quali~ing or proving tests for each type or {
A–B<— —
100 x 2 modified type of electrodes and shall comprise the
EBXXXX and ESBXXXX class electrodes following:
a) All weld metal mechanical tests as given in
4 (A+ B) for Table 2 (see also 9.1);
A-Bs — —
100 x 2
b) Butt weld bend test (see 9.2);
ERXXXX, ERRXXXX and EAXXXXclass electrodes c) Running performance test (for sizes up to and
including 2.5 mm) (see 9.3);
d) Increased metal recovery tests for electrode
claiming recovery 110 percent and above (see
ECXXXX class electrodes 9.4);
e) Difisible hydrogen estimation test for hydrogen
controlled electrodes (see 9.5); and
8 TESTS FOR ELECTRODE PROPERTIES
f) Radiographic quality test for radiographic
8.1 General quality electrodes (see 9.6).
Electrode shall be subjected to the following tests for 8.4 Periodic Check Tests
assessing the mechanical properties of the deposited
weld metal and the usability of an electrode for a These comprise of the following tests selected from

Table 5 Chemical Composition — Requirements for Weld Metal

(Clause 8.2)

Clmsification Weight, Percent, MUX Combined Limit for

& Mn+Ni+Cr+Mo+V
/ \
c Mn Si P s Ni Cr Mo v

EAXXXX Not specified

ECXXXX do

ERXXXX do

ERRXXXX do

EBXXXX 0.12 1.6 0.75 0,035 0.035 0.30 0.20 0.30 0.08 1.75

ESBXXXX Sssmeas EBXXXX

5
 ,.

1
IS 814:2004

among the initial tests (see 8.2) and are meant to be maintained for quality control, for ensuring that the
repeated at intervals to provide evidence that the composition and quality of all the electrodes currently
electrodes currently produced possess the properties produced are similar to those electrodes subjected to
proved in the initial tests: initial and periodic check tests.
a) All weld metal mechanical tests for tensile or 8.6 Additional Tests
impact (see 9.1); and
Subject to agreement with the manufacturer, the
b) Running performance test (for sizes up to and purchaser may request for additional tests to be made
including 2.5 mm) (see 9.3). or certificates to be provided for each batch of electrodes
Such tests shall be conducted at least once in a year. supplied. If so, the tests and batch definition shall be
These tests shall not apply to the electrodes not agreed between the manufacturer and the purchaser.
manufactured during the year. When production of a 9 DETAIL OF TESTS
particular type of electrode after stoppage of production
for more than six months is restored, the periodic tests 9.1 All Weld Metal Mechanical Tests for Tensile and
shall be conducted. Impact

8.5 Quality Control Tests 9.1.1 Weld Assembly

By means of suitable system of control, the Two all weld test assemblies shall be prepared, one
manufacturer shall satis~ himself that the composition using 4.0 mm and the other using the highest size
and quality of all the electrodes currently produced are manufactured in accordance with the method described
similar to those electrodes which were subjected to in Annex F. If the highest size produced by any
initial tests. He shall ensure that the result of quality manufacturer is 4.0 mm, then two weld test assemblies
control tests and date of manufacture of electrodes is using 4.0 and 3.15 mm size respectively shall be
traced from the batch number of the relevant details, or prepared.
both. NOTE — 1sscase 3.15 mm is tire highest size manufactured,
only one weld test assembly shall be prepared with this size.
NOTES
1 For the purpose of this standard, a batch is defined as a lot 9.L2 All Weld Tensile Tests
of covered electrodes of any one size and classification
produced from coating identified by a dry mix or more than Two all weld tensile test specimens, one from each of
one dry mix of controlled chemical composition and core wire the assemblies as given in 9.1.1, shall be prepared and
identified by a heat number or controlled chemical tested in accordance with the method described in
composition.
Annex F. The ultimate tensile strength and yield stress
2 Identification of electrode core wire: shall comply with the values given in Table 6. When
a) Solid core wire for manufacture of electrodes particular ductile properties are claimed or specified,
identified by heat number shall consist of material the minimum percentage elongation shall comply with
from a single heat of metal.
the appropriate value given in Table 6.
b) Solid core wire identified by controlled chemical
NOTE-The all weld tensile test is for qrrrditycontrol purpose
composition rather than by heat number, shall consist
of mill coils of one or more heat from which samples only. It is not intended to imply that values obtained in atl
weld tests should be used for design purposes.
have been taken for chemical analysis. The results of
the analysis must be within the composition limits as 9.1.3 All Weld Impact Tests
specified in IS 2879.
3 Identification of covering mix: Five charpy V-notch impact test specimens shall be
a) A dry mix is the quantity of dry coating ingredients machined fkom the same test assembly and tested in
mixed at one time in one mixing vessel. A dry mix accordance with the metlmd described in Annex F at
may be divided into smaller quantity for production the temperature specified in Table 6 and shall comply
of wet mixes in using a liquid binder. with the values given in Table 6 at specified
b) Covering identified by a dry mix shall consist of temperature. The results of the impact test from
electrode produced from a single dry mix of coating five test specimens shall be assessed as specified
ingredients.
in 9.1.3.1,9.1.3.2 and 9.1.3.3.
c) Covering identified by controlled composition rather
than by dry mix shall consist of one or more dry mixes 9.1.3.1 When computing the average values of the
and shall be subjected to sufficient tests to assure that impact properties fkom the set of five specimens, the
all dry mixes within the lot are equivalent. These tests lowest value and the highest value obtained shall be
shall include chemical analysis of the weld metal, the
results of which must fall within the manufacturers disregarded.
acceptance limits. The identification of the test
9.1.3.2 For classification EXX 1XX, EXX2XX and
procedure and the test results shall be recorded.
EXX3XX, two of the three remaining values shall be
8.5.1 The manufacturer on request shall make available greater than the specified 47 joules; one of the three
to the approving and certifying authorities the records values may be lower but shall not be less than41 joules.

&
 IS 814:2004

The computed average value of the three values shall 9.3 Running Performance Test (for Electrode Sizes
be equal to or greater than 47 joules. Up to and Including 2.5 mm)
9.1.3.3 For classification EXX4XX, EXX5XX and This test is to be carried out for electrodes of 2.5 mm
EXX6XX, two of the three remaining values shall be size and below to assess the welding performance. The
greater than the specified 27 joules; one of the three test shall be conducted using three electrodes as per the
values may be lower but shall not be less than 23 joules. details given in Annex H. The bead should be visually
The computed average value of the three values shall inspected and should be free from porosities, slag
be equal to or greater than 27 joules. inclusions, cracks, etc, in the main portion of the bead
as given in Annex H. The bead shall be reasonably
9.2 Butt Weld Bend Test
straight and evenly rippled. The slag should be removed
Butt weld assemblies shall be prepared in different with little effort.
welding positions for the various electrode
classifications as per the recommendations given in 9.4 Increased Metal Recovery Test
Table 7 and the procedures given in Annex G. If 2.5 The metal recovery shall be determined for the
mm size electrode is manufactured then this size shall electrodes classified under EXXXXXJ, EXXXXXK
be used for the root run for the butt weld assembly and EXXXXXL or EXXXXXHJ, EXXXXXHK and
wherever option of 2.5 or 3.15 mm is given in Table 7. EXXXXXHL on the largest size electrode
9.2.1 From each butt weld assembly two bend tests, manufactured but not lower than 4.0 mm in accordance
one with face and one with root in tension shall be with the method given in IS 13043. The value obtained
carried out. The test specimens shall be bent through by the method shall be rounded off to the nearest
180° over a mandrel having a diameter equal to three multiple of 5.
times the thickness of the specimen in accordance with
The rounded recovery figure shall conform to
IS 1599. The electrode shall be deemed to be
the requirements of 5.1.2(b) for the respective
satisfactory, if on completion of the test no crack or
classification.
defect at the outer surface of the test specimen is greater
than 3 mm measured across the test specimen or 1.5 9.5 Diffusible Hydrogen Evaluation Test
mm measured along the length of the test specimen.
Premature failure at comers of the test specimen shall This test shall be carried out for all electrodes classified
not be considered as a case for rejection. under EXXXXXH and EXXXXXHL preferably using

Table 6 Mechanical Properties of Weld Metal

(Clauses 9.1.2 and 9.1.3)
Classification Ultimate Tensile Yield Percentage Temperature Impact
Strength Stress Elongation for Impact, “(? Strength
on Gauge _
Length 5.65 ~S.
MPa MPa, &fin Min J, Min
(1) (2) (3) (4) (5) (6)

EX40XX 410-540 330 16 No impact requirement

EX4 IXX 410-540 330 20 +27 47
EX42XX 410-540 330 22 0 47
EX43XX 410-540 330 24 -20 47
EX44XX 410-540 330 24 -30 27

EX50XX 510-610 360 16 No impact requirement

EX51XX 510-610 360 18 +27 47
EX52XX 510-610 360 18 0 47
EX53XX 510-610 360 20 -20 47
EX54XX 510-610 360 20 -30 27
EX55XX 510-610 360 20 -40 27
EX56XX 510-610 360 20 -46 27

NOrE — In view of the possible scatter in welding and testing, the upper limit of ultimate tensile strengths may be exceeded
by 40 MPa.

7
IS 814:2004

Table 7 Welding Procedure for Preparation of Butt Weld Bend Test Pieces
(Clauses 9.2 and G-1.4)

Positional Number of Position Welding Procedure

Classification Butt Weld
Assemblies
(1) (2) (3) (4)

EXXXIX 2 Flat a) First run with 3.15 mm or 4.0 mm

(Weld slope W’) b) Subsequent runs (except last two layers) with
(Weld rotation 0°) 4.0 mm or 5.0 mm according to normal practice
of the electrode.
c) Runs of last two layers with the largest size
submitted for approval

Vertical up a) First mn with 2.5 mm or 3.15 mm

(Weld slope 0°) b) Subsequent runs with one of the following:
1) With 4.0 mm or if recommended by the
manufacturer with 5.0 mm
2) With 3.15 mm when the increased metal
recovery exceeds 110 percent

Vertical down a) First run with 2.5 mm or 3.15 mm

(Weld slope 0°) b) Subsequent runs with one of the following:
1) With 4.0 mm or if recommended by the
manufacturer with 5.0 mm
2) With 3.15 mm when the increased metal
recovery exceeds 110 percent

Overhead a) First run with 2.5 mm or 3.15 mm

(Weld slope 0°) b) Subsequent runs with one of the following:
(Weld rotation 180°) 1) With 4.0 mm or if recommended by the
manufacturer with 5,0 mm
2) With 3.15 mm when the increased metal
recovery exceeds 110 percent

EXXX2X Flat Same as EXXXIX

Vertical up Same as EXXXIX

Overhead Same as EXXXIX

EXXX3X Flat Same as EXXXIX

Horizontal Vertical a) First run with 3.15 mm or 4.0 mm and

(Weld slope 0°) b) Subsequent runs with 5.0 mm
(Weld rotation O“)

EXXX4X 2 Flat Same as EXXXIX

EXXX5X 2 Flat Same as EXXxlX

1 Vertical down Same as EXXXIX

EXXX6X As required In all positions a) If the position comes nearer to flat position:
specified by the 1) First run with 3.15 mm or 4.0 mm
manufacturer 2) Subsequent runs (except last two layers) with
4.0mmor5.Omm
3) Last two layers with the largest size
submitted for approval

b) For other position(s):

1) First run with 2.5 mm or 3.15 mm
2) Subsequent runs with 4.0 mm or if recom-
mended by the manufacturer with
5.0 mm

4s
 ‘1
IS 814:2004

3.15 mm or 4.0 mm size. The test shall be carried out prepared by using electrode from the same batch
inaccordance with IS 11802. wherever possible and submitted only for the tests in
which failure occurred. The electrode shall not be
9.6 Radiographic Test accepted as having passed that test unless the tests on
All welded test assemblies after the removal of backing additional specimen are satisfactory.
strip, shall be machined or ground smooth so as to avoid
11 PACKING AND STORAGE
difficulty in interpretation ofradiograph ofweld. It shall
then be subjected to radiographic test as per IS 1182. 11.1 The net mass of an individual bundle or carton of
The radiograph shall not show crack or incomplete electrodes shall not exceed 7 kg.
fusion. The radiograph acceptance standard in respect
of porosity and slag inclusions is indicated in Table 8. 11.2 Electrodes shall be suitably packed to guard
againstany damage duringtransportation.The packing
In making the evaluation for radiographic acceptance shall be suitableto ensurethatundernormal storeroom
standard, a length of 25 mm of the welded assembly conditions, the electrodes shall, for a period of six
shall be excluded from both ends. months atler the date of manufacture, be capable of
10 RETESTS giving results in accordance with the provisions of this
standard and that if the flux covering is a type requiring
Where any test specimen fails to fulfil the test special protection during storage, the details of such
requirements, twice the number of the test specimens special protection shall be furnished by the
made for that test for the initial or periodic test shall be manufacturer and reference to this should be included

Table 8 Radiographic Acceptance Standard in Respect of Porosity and Slag Inclusion

(Clause 9.6)

1S Classi- Radiographic Type of Acceptance Restriction, If Any

tication of Acceptance Porosity ~#
Electrode Standard and/or Slag Quantity
Inclusion (Diameter in Numbers
or Length) (in 150 mm)
mm

(1) (2) (3) (4) (5) (6)

EA 42XX-X Grade 1 Assorted 0.4 to 1.6 18 a) Large size indications (1.2

EB 542X-HX to 1.6 mm)= 3 No. Max
EB 542-HJX b) Medium size indications
EB 562X-HX (0.8 to 1.2 mm)= 5 No. Mux
EB 562X-HJX c) Small size indications (0.4
EB 54 lX-HJX to 0.8 mm)= 10 No. Max
EB 552X-HJX
Large 1.2to 1.6 8 Nil
Medium 0.8 to 1.2 15 Nil
Fine 0.4 to 0.8 30 Nil

EC 4XI0-X Grade 2 Assorted 0.4 to 2.0 27 a] Large size indications (1.6

EC 4X16-X to 2.0 mm)= 3 No. kfux
ER 4XXX-X b) Medium size indications (1.2
ERR 4XXX-X to 1.6 mm)= 8 No. A&x
ER 5XXX-JX c) Small size indications (0.4
ERR 5XXX-JX to 1.2 mm)= 16 NO.Mux
ERR 5XXX-LX
EB 5XXX-HXX Large 1.6 to 2.0 14 Nil
EB 5XXX-HLX Medium 1.2to 1.6 22 Nil
Fine 0.4 to 1.2 44 Nil

ERR 5XXX-LX Not

EB 5XXX-HXX Required
EB 5XXX-HLX

-- .—
 A

!
IS 814:2004

in the marking of bundle or carton of electrodes. The clearly marked with the following information:
electrodes shall be stored in a dry room condition (see a) Classification (see 5);
also IS 13851).
b) Indication of the source of manufacture;
11.3 The batch of electrodes represented by the c) Trade name and brief description of the
electrodes tested shall not be certified as complying electrodes;
with this standard unless the test results obtained satisfy
the requirements specified in 8.3 and the manufacturer d) Size and quantity of electrodes;
has performed the tests at intervals in accordance with e) Batch number;
the requirements of this standard. f) Recommended current range, polarity and open
circuit voltage;
12 TEST RESULTS
g) Date of manufacture;
12.1 On request, as evidence that the electrodes supplied h) Recommendation for special storage conditions
comply with the requirements of this standard, the and redrying temperature; and
manufacturer shall produce the results of most recent
periodic check tests on electrodes representative of the j) A cautionary notice on safety during welding.
electrodes supplied. 13.1.2 BIS Certl~cation Marking
12.2 If required by the purchaser, the manufacturer The bundle or carton of electrodes may also be marked
shall furnish a test certificate for each batch of electrode with Standard Mark. .
supplied.
13.1.2.1 The use of the Standard Mark is governed by
13 MARKING the provisions of Bureau ofIndian Standar& Act, 1986
13.1 As agreed to between the manufacturer and the and the Rules and Regulations made thereunder. The
purchaser, brand name/classification shall be printed details of conditions under which the licence for the
on all the electrodes. use of Standard Mark maybe granted to manufacturers
or producers maybe obtained from the Bureau of Indian
13.1.1 Each bundle or carton of electrodes shall be Standards.

ANNEX A
(Clause 5.1.2)
EXAMPLES OF ELECTRODE CLASSIFICATIONS

A-1 The examples given in A-2 and A-3 illustrate the sets of impact tests at +27°C, O°Cand –20°C in order to
way in which the coding and the complete classification determine the appropriate classification.
is expressed.
A-3 EXAMPLE 2
A-2 EXAMPLE 1
A covered electrode having a basic covering with an
The electrode is a covered electrode having a light rutile increased metal recovery of 120 percent and depositing
covering. weld metal containing 7 millilitres of diffusible
hydrogen per 100 g of deposited weld metal.
The electrQde maybe used for welding in all positions
and it weld satisfactorily on a.c. with a minimum open The electrode may be used for welding in all positions
circuit voltage of 50 V and on d.c. with both positive except vertical down and operate on a.c. with a
and negative polarity. minimum open circuit voltage of 70 V and on d.c. with
positive polarity. The electrode deposit weld metal gives
The electrodes are not designed to give hydrogen radiographic quality weld.
controlled weld metal. The electrode is not meant for
The electrode deposits weld metal with the properties
radiographic application.
given in Table 10 when tested in accordance with this
The electrode deposits weld metal with the properties standard and when the manufacturer submits 6.3 mm
given in Table 9, when tested in accordance with electrode as the maximum size to be classified. The
standard and when the manufacturer submits 8 mm table of results shows that the manufacturer carried out
electr~de as the maximum size to be classified. The sets of impact tests at –30°C and 40”C in order to
table oi wsults shows that the manufacturer carried out determine the appropriate classification.

10
 IS 814:2004

Tab1e9 Test Resuitsfor Examplel

(Clause A-2)

Property Electrode Size Requirement for Class Remarks

A
A
c \ f \
4 mm 8 mm EX4XXX EX5XXX

(1) (2) (3) (4) (5) (6)

Ultimate tensile 480 465 410-510 510-610 Satisfactory for EX4XXX but
strength, MPa unsatisfactory for EX5XXX class

Yield strength, 365 350 330 Min 360 &fin Satisfactory for both
Mpa EX4XXX and EX5XXX classes

Impact strength 80,78 72,69 47 Min 47 Min Satisfactory for both

at +27”C, J 70,69 65,64.6 EX4XXX and EX5XXX classes
(average) 62< 60

Impact strength 65,58 62,58 47 Min 47 Min Satisfactory for both

at O“C,J 50,50 50,49 EX4XXX and EX5XXX classes
I
(average) 49 43

Impact strength
at –20”C, J
(average)

Elogation, percent
at 5.65 ~
46,45
40,40
35

26
40,37
33,32
30

25
47 Min

22 Min
47 Min

18 Min
Unsatisfactmy for both
EX4XXX and EX5XXX classes

Satisfactory for both

EX4XXX and EX5XXX classes
-
NOTES
1 Elogation incorporated here from Table 2 after establishment of impact property at specified temperature.
2 So is the cross-sectional area of test piece.

ER4 21

COVERED ELECTRODE JI

TYPE OF COVERING-( RUTILE)

STRENGTH CHARACTERISTICS -( UTS=4IO-51O MPa

AND YS=330 MPa min.) -

ELONGATION AND IMPACT PROPERTIES-( ELONGATION=

22% min. AND lMPACT=47Jmin. AT O“C ) J

WELDING POSITION-( ALL POSITIONS) ~

WELDING CURRENT ANO VOLTAGE CONDITIONS-

(D~ANDA 50)

Complete classification is thereforeER4211.

11 “

-“? , —.
 .

7
IS 814:2004

Table10 Test Resultsfor Examp1e2

(Clause A-3)

Property Electrode Size Requirement for Class Remarks

A A
< \ f \
4 mm 6.3 mm EX4XXX EX5XXX

(1) (2) (3) (4) (5) (6)

Ultimate tensile 570 550 410-510 510-610 Satisfactory for EX5XXX but
strength, MPa unsatisfactory for EX5XXX class

Yield strength, 420 400 330 Min 360 A4in Satisfactory for both
MPa EX4XXX and EX5XXX classes

Impact strength 65,62 55,52 27 Min 27 h4in Satisfactory for both

at -30”C, J 58,56.6 46,40 EX4XXX and EX5XXX classes
(average) 50 37

Impact strength 30,24 22,20 47 k% 47 A4in Unsatisfactoryfor EX5XXX classes

at –20”C, J 21,20 16, 14
(average) 16 17.6

Elogation, percent 26 25 24 Min 20 &fin Satisfactory for both

at 5.65 ~ EX4XXX and EX5XXX classes

NOTES
1 Elogation incorporated here from Table 3 after establishment of impact property at specified temperature.
2 So is the cross-sectional area of test piece.

EB54 26i J x

COVERED

TYPE
mm-
OF COVERING -(BASIC )
I‘
STRENGTH C.HARACTERISTICS-OJTS= 5Kl- MPa AND
YS=360 MPa min.)

ELONGATION AND IMPACT PROPERTIES-( ELONGATION =

20% min. AND IMPACT= 27 J min. AT -30° C )

WELDING POSITION -(ALL POSITIONS EXCEPT VERTICAL DOWN)—

WELDING” CURRENT AND VOLTAGE CONDITION - (D +AND A 70)

HYDROGEN CONTROLLED ELECTRODES-(15 ml max.)

INCREASED METAL RECOVERY -(110-}29 “/.)

RADIOGRAPHIC QUALITY ELECTRODE

Complete classification is therefore EB 5426H1JX.

.
12

-?.. —
 IS 814:2004

ANNEX B
(Clause 5.2)
CHARACTERISTICS OF COVERING AND COATING RATIO

B-1 ACID (A) quantity of combustible organic substances, so that the

decomposition of the latter in arc produces a
Electrode of acid type have a medium or thick covering voluminous gas shield. The amount of slag produced
and produce an iron oxide, manganese oxide, silica rich is small and the slag is easily detached.
slag (with some titania in some cases), the metallurgical
characteristics of which is acidic. The covering This type of electrode is characterised by a highly
contains, besides oxides, of iron antior manganese penetrating arc and fairly high fusion rate. Spatter losses
(with some titania in some cases), a fairly high are fairly high and the weld bead is somewhat coarse,
percentage of ferro-manganese and/or other with unevenly spaced ripples. These electrodes are
deoxidisers. The slag generally solidifies in a usually suitable for welding in all positions. Generally,
characteristic honeycomb structure and is easily this type of electrodes are suitable for use on d.c. with
detached. positive polarity, but some electrodes are also available
which are suitable for use on a.c..
This type of electrode usually has a high fusion rate
may be used with high current intensities. Penetration B-4 RUTILE (R)
can be good, particularly if the covering is thick. These
electrodes are most suitable for welding in flat position These electrodes have a covering containing a large
quantityof rutileor components derived from titanium
but can be used in other positions and can be operated
both on a.c. and d.c. oxide. The electrodes have smooth arc characteristics
and normally produce very little spatter and are
B-2 BASIC (B) comparatively easy to use. This type of electrode can
be generally used in all positions. These electrodes are
Electrodes of basic type usually have a covering used both on a.c. and d.c. The slag detachability is
containing appreciable quantities of calcium or other generally good.
basic carbonates and fluorspar so that metallurgically
they are basic in character. There is a medium quantity B-5 RUTILE, HEAVY COATED (RR)
of dense slag, which often has a brown to dark-brown
colour and a glossy appearance. It is easily detached, These electrodesaregenerally similarin characteristics
and as it rises to the surface of the weld very quickly, to mtile type but having a higher coating ratio (over
slag inclusions are not likely to occur. This type of 1.5). Applicationwise; it is usually preferred for flat
electrode gives an arc of average penetration, and is and horizontal vertical position though welding’ in
suitable for welding in all positions. These electrodes other positions can also be possible.
are used both on a.c. and d.c. where d.c. positive polarity B-6 SEMIBASIC (SB)
is generally preferred for critical applications.
The electrodesof semibasic type shall be a combination
As the weld metal is highly resistant to hot and cold of rutile and basic covering.
cracking, these electrodes are particularly suitable for
welding heavy sections and very rigid mild steel B-7 COATING RATKI
structures. They are also recommended for welding low
The coating ratio of an electrode is the ratio of the
alloy steels and steels of which carbon and sulphur
standard outer diameter of the covering and the
content are higher than those of mild steel of good
nominal diameter of the core wire both expressed in
weldable quality.
millimeters.
These electrodes must be stored in a reasonably dry
For guidance, coating ratio for various types of coating
place and should be dried before use, according to the
is given below:
recommendations of the manufacturer. This ensures that
the weld metal will have a low hydrogen content and Type of Coating Coating Ratio
there is a less risk of under bead cracking when welded
steel is likely to show a marked hardening in the heat Light coating up to 1.3
affected zone. Medium coating Over 1.3 up to and
including 1.5
B-3 CELLULOSIC (C)
Heavy coating Over 1.5
The coverings of the cellulosic type contains a large
IS 814:2004

ANNEX C
(Clause 5.5.1)
WELDING POSITION

C-1 WELDING POSITION

The welding position of a weld is defined by its slope and rotation as indicated in Table 11.

Table 11 Welding Position

Position Slope Rotation Illustration
(Degree) (Degree) (Ref to Fig.)

(1) (2) (3) (4)

Flat o-5 0-1o 2

Horizontal/Vertical o-5 30-90 3

Vertical-op 80-90 0-180 4

Vertical-down 80-90 0-180 5

Overhead 0-15 115-180 6

NOTE — Any intermediate position not specified above is undefined, but tbe general term inclined is sometimes used.

FIG. 2 FLAT POSITtON

14

,= .&.”
,e+
 IS 814:2004

90°

SLOPE

ROTATION

Y
FIG. 3 HoruzomdVmmcN- POSITION

(f 0° 0°
0° SLOPE
SLOPE
ROTATION O TO 180° ROTATION O TO 180°

FIG. 4 VERTICAL-UP POSITION FIG, 5 VmmcM-Dow POSITION

0°

180-
ROTATION

FIG. 6 Ovtwwm POSITION

15
IS 814:2004

ANNEX D
(Clause 5.6)
STANDARD WELDING CURRENT AND VOLTAGE CONDITION

D-1 STANDARD WELDING CURRENT AND to size of the electrode. Table 12 applies to the sizes 2.5 mm
VOLTAGE CONDITION and above. The reference size for coding of welding current
and voltage condition should be 4 mm or 5 mm. If electrodes
Specific welding current and open circuit voltage of size less than 2.5 mm are used, a high voltage may be
necessary. Within the range of sizes 2.5 mm to 8 mm, the
conditions are denoted by symbols given in Table 12. open circuit voltage necessary may be expected to vary
When an electrode is meant for use with either d.c. or approximately as follows:
a.c., combination of symbols given in Table 12 shall
be used. Code Voltage Variation in Voltage
NOTES v v
1 The electrode may not function satisfactorily at a lower 90 100 to 80
voltage than that for which it is classified but a higher voltage
may be used in service with advantage. 70 80 to 60
2 The open circuit voltage for striking the arc varies according 50 60 to 40

Table 12 Welding Current and Open Circuit Voltage

Description Symbol

(1) (2)

d.c. with electrode positive f)+

d.c. with electrode negative D-

d.c. with electrode positive and negative D+

a.c. with an open circuit voltage A 90

not less than 90 V

a.c. with an open circuit voltage A 70

not less than 70 V

a.c. with an open circuit voltage A 50

not Iess than 50 V

16

*...-..
 IS 814:2004

ANNEX E
(Clauses 8.1.3, F-1.1 and F-1 .2)
PARENT METAL FOR TEST PIECES

E-1 PARENT METAL propertiesshallbe verified fromtests on the platebefore

the test pieces are prepared. The chemical composition
The parent metal and its mechanical properties, to be shall also be verified from plates before the test.
used for preparing different test pieces Ilom all weld
assembly and butt weld assembly for different class of The plate may be in as rolled or normalized condition.
electrodes is given in Table 13. The mechanical

Table 13 Parent Metal for Weld Assembly

Class of Test for Parent Metal

Electrode Electrode

Indian Standard Tensile Percentage

Strength Elongation on
Range, MPa Gauge Length
5.65 ~, A4in -j
(1) (2) (3) (4) (5)

EX4XXX All weld IS 1977, 1S2002, IS 2062, 410-530 22

and IS 3039 or any other steel
butt weld considered equivalent to
any of these standards

EX5XXX All weld IS 8500 Grade Fe 540HT or 510-660 19

and any other steel considered
butt Weld equivalent to thk standard

17

/.. A..... -
IS 814:2004

ANNEX F
(Clauses 9.1.1,9.1.2,9.1.3, G-1.l andH-1.1)
ALL WELD TESTS FOR TENSILE AND IMPACT

F-1 PREPARATION OF TEST PIECES F-2.4 Each electrode shall be consumed completely
up to a stub end of not more than 50 mm. - -
F-1.l Parent Metal
F-2.5 The welding current used shall always be less
The parent metal for plates used in test pieces shall be
than the maximum value and within the range
in accordance with Annex E. The test specimens shall
recommended by the manufacturer. The open circuit
not be subjected to any mechanical or thermal treatment
voltage shall not be less than that specified by the
other than that required under this Annex.
manufacturer.
F-1.2 All weld metal test pieces shall be prepared by
depositing weld metal between the chamfered edges of The welding current shall be a.c., if the electrode can
two plates placed on a backing strip as shown in Fig. 7. be used with both a.c. or d.c, The welding current shall
The backing strip shall be tack welded to the test be d.c. with positive polarity, if the electrode can be
assembly. used with d.c. positive or negative polarity.

The backing strip shall also be made from the material F-2.6 If it is necessary to interrupt the welding
used for all weld metal assemblies described in procedure, the assembly shall be allowed to cool in still
Annex E. air to room temperature. When welding is resumed,
the assembly shall be preheated to a temperature of
F-1.3 The dimensions of test assembly are shown in 110+ 15°c.
Fig. 7 and given in Table 14. The length of the plate
shall be enough to accommodate a tensile test specimen F-2.7 When the assembly has been welded completely,
and at least six charpy V-notch impact test specimens it shall be allowed to cool in still air to room
as shown in Fig. 7. temperature. The portion including the weld shall then
be removed by cutting away the excess plate at the
F-1.4 The plate edges shall be bevelled by machining places indicated in Fig. 9. Cutting along the chain lines
or machine gas cutting. In the later case, any remaining (shown by ---- -) may be done mechanically or by
scale should be removed from bevelled edges. The machine gas cutting. Along the longitudinal boundaries
surface of the backing strip should be free from rust or (shown by broken lines rts(--------------------
scale. --- -) of the parts to be machined into impact test pieces
F-1.5 In order to counteract shrinkage deformation, cutting should be done by mechanical methods only.
the test assembly should be preset as shown in Fig. 8 in
F-3 HEAT TREATMENT OF ALL WELD
such a way so that afler completion of welding a level
TENSILE TEST PIECE
joint is obtained.
F-3.1 The all weld test pieces shall be heat treated in a
F-2 WELDING PROCEDURE
furnace at a temperature of 250”C for a period of
F-2,1 The assembly shall be welded in flat position 12+1 hrs. After the soaking period, the specimen shall
unless the electrode is not recommended in the flat be withdrawn from the furnace and allowed to cool
position in which case welding position shall be one slowly, protected from drought and chilling.
that is recommended by the manufacturer.
F-3.2 The purpose of heat treatment is to remove
F-2.2 The test assembly shall be preheated to hydrogen from weld metal.
110 + 15“C. Welding shall be continued with an
interpass temperature of not less than 11O°C and not F-3.3 The impact test pieces shall not be heat treated.
more than 180”Cas measured by temperature indicating F-4 ALL WELD TENSILE TEST
crayons or surface thermometers at the area specified
in Fig. 7. The tensile test specimen shall be machined from the
weld metal test pieces in accordance with IS 1608, care
F-2.3 Pass Sequence being taken that the longitudinal axis of the test
The weld metal shall be deposited in layers made up of specimen coincides with the central line of the weld
two passes as shown in Fig. 9. The welding speed shall and the mid thickness of the plate (see Fig. 10). The
be adopted to obtain the number of layers given in Table dimensions of the specimen shall be as shown in
15. The direction of welding to complete a pass and a Fig. 11 and Fig. 12. The specimen shall be tested
layer shall be same. The direction of deposition of each in accordance with IS 1608.
layer shall alternate from each end of the plate. F-5 ALL WELD IMPACT TEST
NOTE — The test specimens to be located on the centre
line A-A. The impact test specimen shall be machined from

18

*.,,-..
 IS 814:2004

the weld metal test pieces to the dimensions given centre of the weld and is to be cut on the face of the
in Table 16 in accordance with IS 1757. Care being test piece perpendicular to the surface of the plate
taken that the longitudinal axis of the specimen (see Fig.13A, 13B and 13C)thetests are to be conducted
are perpendicular to the weld axis and upper surface at the test temperature on an approved impact
of the plate. The notch shall be positioned in the machine.

Table 14 Dimensions of Test Assembly

(Clause F-1.3)
All dimensions in millimetres.

Electrode Plate Width, C Plate Thickness, T Width of Backing Strip

Size Welding
Gap, A Width Thickness
B, Min S, Min

(1) (2) (3) (4) (5) (6)

3.15 90+ 10 15*3 12+1 A+1O 6.5

4
4.0 9(3+10 20+2 16+1 A+1O 10.0

5.0 120+ 10 20*2 18+1 ,4+1(J 10.0 “1

.
6.3 120+ 10 20*2 20+1 A+ll) 10.0

8.0 150+ 10 25*2 20*1 A+lo 12.5

Table 15 Welding Details

(Clause F-2.3)

Electrode Size Split Weave Passes for Number of

Layer No. Layer Layers
mm
(1) (2) (3) (4)

3.15 1 to top 2 6t09

4.0 1to top 2 7to 10

5.0 1 to top 2 6t09

6.3 1 to top 2 6t09

8.0 1 to top 2 8 to 12

Table 16 Dimensions of Impact Test Specimen

(Clause F-5)
All dimensions in millimetres.

Length Width Thickness Angle of Root Radius Depth Between Distance

Notch of Notch Notch (Measured from Either
at the Both End of Test
Ends) Piece

(1) (2) (3) (4) (5) (6) (7)

55* 0.6 10+0.11 10* O.11 45” * 2“ 0.25 ● 0.025 8+0.11 27.5 * 0.42

19
 ,

1
IS 814:2004

.-
k-. -----

T
i
_, _

____ _ _-,
r

li-
1- --
\r

___ ___ .__,

LOCATION OF
TEMPERATuRE t
MEASUREMENT I __ ---- __ _.

F -. -- —_. ---
IV
25 )0
F -- ___ --- -_ -
l!! 50 ‘ —
—
— 10
--

-TENSILE TEST
e ---, SPECIMEN

( I 1.
ISCARD
&
mm i min

1-

1.-
k- (.
I

All dimensions in millimeters.

OFTESTASSEMBLYANDPOSITIONOFCmG
FIG. 7 DIMENSIONS OFTESTPIECES

FIG. 8 PRESETTING
OFTESTASSEMBLY

20
 IS 814:2004

A
FIG. 9 WELDGEOMETRY

‘ ~#ilOmm(FOR 4mm AND ABOVE)

AND da6*4mm(FOR 3“15mm)

FIG. 10 CUTITNG
OFTENSILETESTPIECE

–TO SUIT THE GRIP

*12mm mln
1,

GAUGE LENGTH 50mm

- PARALLEL LENGTH 60 mm ~
70 mm min -
P

FIG. 11 TENSILETESTPIECEFORSIZES4 mm ANDABOVE

GAUGE LENGTH 32mm

PARALLEL LENGTH 3809mm

44. 8mm min

FIG.12 TENSILETESTPtECEFORSUES3.15 mm

21

- ,... .>.
IS 814:2004

T/2
. ~: I
1,2
4 I

55 9
A Position of Test Assembly
10 /

F!zE?
10 \

27.5 27.5
55

B Dimensions of Test Piece

~ C Dimensions of V-Notch

All dimensions in millimeters.

FIG. 13 IMPACTTESTPIECES/ASSEMBLY

ANNEX G
(Clause 9.2)
BUTT WELD BEND TEST
G-1 PREPARATION OF TEST PIECE root bend test specimen as indicated in Fig. 15. The
specimen shall then be subjected to a temperature of
G-1.1 Parent Metal
250”C for a period of 12 + 1 h for hydrogen removal
The parent metal for plates used in preparing test pieces prior to testing. After the soaking period, the specimen
shall be in accordance with Annex F. The test specimen shall be withdrawn from the furnace and allowed to
shall not be subjected to any mechanical or thermal cool slowly, protected from droughts and chilling.
treatment other than that required under this Annex.
G-2 BEND TEST
G-1.2 Test pieces shall be prepared as shown in
Fig. 14 by welding together two plates of suitable length G-2.1 Each bend test specimen shall be 30 mm in
to allow the cutting out of test specimens of specified width. The upper and lower surface of the weld shall
size. The dimensions of test assembly are given in be filed ground or machined level with the respective
Table 17. original surface of the plates, where the surface of the
plates are not level with each other, provided that the
G-1.3 Plates may be preset to allow for slight distortion thickness of the plate is not reduced by more than a
after welding. total of 1 mm. Tool marks should be avoided as they
G-1.4 Welding Procedure lead to localization of stresses and may cause premature
failure. For this reason, direction of machining of
The welding procedure followed in making the test surfaces should be along the specimen and transverse
pieces should be as set out in Table 7 according to the of the weld. The sharp comers of the test specimens
position of welding. In all cases the backing runs shall shall be rounded to a radius not exceeding 10 percent
be made with 4.0 mm electrodes in the weld position of the specimen thickness.
applicable to each test piece after cutting out a groove
to a depth of 3 mm if such groove is considered G-2.2 The test specimen shall be bent through an angle
necessary (see Fig. 15). of 180° in accordance with IS 1599. Method for bend
test over a mandrel having a diameter equal to three
G-1.5 The welding current used shall be within the
times the thickness of the specimen. One test specimen
appropriate range recommended by the manufacturers.
should be tested with face of the weld in tension and
The open circuit voltage shall not be less than that
one with the root of the weld in tension. The electrode
specified by the manufacturer. The welding current shall
should be deemed to be satisfactory, if on completion
be a.c. if the electrode can be used with positive polarity,
of the test no crack or defect at the outer surface of the
when the electrode can be used with both d.c. negative
test specimen is greater the 3 mm measured across the
and positive polarity.
test specimen or 1.5 mm measured along the length of
G-1.6 After welding the test piece shall be cut by the test specimen. Premature failure at comers of the
sawing or machining to form one face bend and one specimen shall not be considered a cause for rejection.

22
 ,...

1
IS 814:2004

Table 17 Dimensions of Bend Test Assembly

(Clause G-1.2)
All dimensions in millimetres.
Length Width, W Angle Root Face, F Root Gap, G Thickness, d
Max Min Max
(1) (2) (3) (4) (5) (6)

180 100 60” – 70° 3 3 15-20

m
w ● ●
w -

DISCARD 60 max.

---—— —. —-. .—— — ——— —_

1 ---— ——-. . .—— ———-—- --

-—— ———— -. ---- --—- -

DISCARD 60max.

G4k
FIG. 14 PREPARATION
OFBENDTESTPJECE

6mm max —

FIG. 15 GROOVE
PREPARATION
FORDEPOSITION
OFSEALING
RUN

23

,.. .. ...
IS 814:2004

ANNEX H
(Clause 9.3)
RUNNING PERFORMANCE TEST
H-1 PREPARATION OF TEST PIECE Three fill electrodes of the particular size keeping not
more than 50 mm stub end should be burnt over the
H-1.1 Parent Metal
parent metal by using a suitable current within the
The parent material should be chosen from any of the current range prescribed by the manufacturer. When
steels prescribed in Annex F. The length of parent the electrode can be used both on d.c. and a.c; a.c. should
material for this test should be such that at least one be used with OCV not less than that prescribed by the
full straight run of the electrode can easily be manufacturer. When the electrode can be used in d.c.
accommodated on it. The thickness of the piate/sheet only, the d.c. positive polarity should be adopted. If all
should be within 2 to 3 times the diameter of the core the three beads are made on the same plate/sheet, care
wire of the electrode. If sheet of suitable thickness is should be taken that no portion of any bead overlaps
not available, plates can be shaped to desired thickness. with any portion of other beads. The electrodes maybe
The plate/sheet should be free from any rust, dirt, redried before welding as directed by the manufacturer.
moisture, oil, grease or any other contamination before
H-2 RUNNING PERFORMANCE TEST
welding.
H-1.2 Welding Procedure The beads shall be visually inspected and shall be free
from porosities, slag inclusions, cracks, etc, in the main
Welding should be done in downhand position by portion of the beads given in Fig. 16. The beads should
stringer bead or, light weaving technique either by touch be fairly straight and evenly rippled. The slag should
welding or by keeping the arc slightly open. The be removed with little effort. A length of 15 mm from
weaving should be restricted to 1.5 times the diameter the start and from finish of the bead should not be
of the electrode (the final diameter including coating). considered for visual inspection.

15mm 15mm

~ -THIS 15mm FROM

START SHOULD
313 NOT BE CONSIDE-
RED FOR VISUAL
INSPECTION
((((m((((mmo

I ‘((((~(’((([v I

FIG. 16 RUNNINGPERFORMANCE
TEST

24

- . . ....
Bureau of Indian Standards

BIS is a statutory institution established under the Bureau ofhdian Standards Act, 1986 to promote harmonious
development of the activities of standardization, marking and quality certification of goods and attending to
connected matters in the country.

Copyright

B1S has the copyright of all its publications. No part of these publications may be reproduced in any form
without the prior permission in writing of BIS. This does not preclude the free use, in the course of implementing
the standard, of necessary details, such as symbols and sizes, type or grade designations. Enquiries relating to
copyright be addressed to the Director (Publication), BIS.

Review of Indian Standards

Amendments are issued to standards as the need arises cm the basis of comments. Standards are also reviewed
periodically; a standard along with amendments is reaffirmed when such review indicates that no changes are
needed; if the review indicates that changes are needed, it is taken up for revision. Users of Indian Standards
should ascertain that they are in possession of the latest amendments or edition by referring to the latest issue of
‘B1S Catalogue’ and ‘Standards: Monthly Additions’.

This Indian Standard has been developed from Dot: No. MTD 11 (4455).

Amendments Issued Since Publication

Amend No. Date of Issue Text Affected

BUREAU OF INDIAN STANDARDS

Headquarters:
Manak Bhavan, 9 Bahadur Shah Zafar Marg, New Delhi 110002
Telephones: 2323”0131,23233375,2323 9402 website : www.bis.org.in

Regional Offices: Telephones

Central : Manak Bhavan, 9 Bahadur Shah Zafar Marg 23237617

NEW DELHI 110002 { 23233841
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Printed at Simco Printing Press, Delhi

.4. . . .
 AMENDMENT NO. 1 OCTOBER 2005
TO
1S 814:2004 COVERED ELECTRODES FOR
MANUAIJ METAL ARC WELDING OF CARBON AND
CARBON MANGANESE STEEL — SPECIFICATION
(SiAIh Revision)

[ Foreword, para 3(a) ] –- Substitute the following for the existing line:

‘Semibasic type (SB) of covering has been included and ‘S’ type of covering has I
been deleted.’
( Foreword, paru 3 ) — Add ‘d)’ as follows:
‘d) Transverse bend test has been deleted’ I
[ Page 2, clause !I1.2(a), and page 4, clause 5.7 ] — Substitute ‘HI, Hz,
H3’jbr ‘H 1, H2 and H3’ wherever it appears. $1
~
[ Page 2, clause 5.1.2(b), lines 1 to 4 ] — Substitute the following for the
t
existing: ‘
‘letters J, K and L. indicating increased metal recovery, as ‘effective electrode t
effkiency (EE)’ asp& IS 13043 in the following range (see 5.8)”.
( Page 2, cfause 5.5 ) — Substitute ‘1,2,3 ... .....’ for ‘a ),b),c), ... . ...’.
( Page .5, Table5,CO12 ) — Substitute ‘ASpermsn.facturers declaration’~b’ ‘Not
specified’.

( Page 6, c)ause 8,4, line 2 ) -—Substitute ‘see 8.3’ Jor ‘see 8.2’.
[ Page 6, clause 8.4(a)] — Substitute ‘tensile and impact’ for ‘tensile or
.
impact’ .
A
( Page 7, Table 6, CO1 3 ) — Substitute ‘400’ for ‘360’ for all
EX5 . .. .....classifidations.
( Page 9, Table 8,CO11 and 2 ) — Substitute the following for the existing
classifications:

EA 42 xx
*
EB542 X
EB542
EB362 X GIYKtel
EB 562 X
EB 541 X
EB 552 X

.
Amend No. 1 to IS 814:2004

EC4XI0 -x
EC 4X16-X
ER4XXX -X
ERR4 XXX - X
ER 5 XXX - JX Grade 2
ERR 5 XXX - Jx
ERR 5 XXX - KX
ERR 5 XXX - LX
Ef35 XXX - HXX
f3B5 XXX - HLX

ER41 XX Not
ER 42 XX required

( Page 11, Table 9, COI4 row 1 ) — Substitute ‘41o.s4o’for ‘410-510’.

( Page 11, Table9,CO15, row 2 ) — Substitute ‘400’for ‘360’.

( Page 11, Table 9, CO16, row 2 ) — Substitute the following for the
existing:
‘Satisfactory for EX4XXX and unsatisfactory for EX5XXX classes’

( Page 11, Table 9, col 1, row 6 ) — Substitute ‘Elongation’ for ‘Elogation’.

( Page 12, Table 10,CO14, row 1 ) — Substitute ‘410-s40’for ‘410-510’.

( Page 12, Table 10, CO16, row 1 ) — Substitute the following for the
existing:
‘Satisfactory
for both EX4.XXX and EX5XXX classes’
,
( Page 12, Table 10, COI6, row 4 ) — Substitute the following for the
existing:
‘tJnsatisfactory for both EX5XXX and EX4XXX classes’

( Page 12, Table 10, CO11, row 5 ) — Substitute ‘Elongation’ for ‘Elongation’.

( Page 12, Table 10, col 5, row 2 ) — Substitute ‘@o’for ‘MO’.

.
( Page 12, Table 10, line diagram for classification EB 5426HlJX.1
qrnbol 5 ) — Substitute ‘YS=400’
for ‘YS= 36o’.

.
 AmendNo. 1 to IS 814:2004

( Page 12, Table 10, last line below line diagram ) — SubstiMe ‘EB 5426 w
JX’ for ‘Ill 5426H1 LIX”.

( Page 18, Armex F,,ciause F-2.7, line 5 ) — Substitute ‘Fig. 10’for ‘Fig. 9’.
( page i 9, i7able ]6, CO16, heading ) — Substitute ‘DepthBelow Notch’ for
‘Depth Between Notch’.

( Page 24, Fig. 16) — Delete ‘THIS 15 mm FROM START SHOULD

NOT BE CONSIDERED FOR VISUAL INSPECTION’.

*
,,
4

(MTDli)
Reprography IJnit, BIS, New Delhi, India
3

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