PM/ 15961/ 1/May 2020

PRODUCT MANUAL FOR

Hot dip Aluminum – Zinc Alloy Metallic Coated Steel Strip and Sheet (Plain)
according to IS 15961:2012

This Product Manual shall be used as reference material by all Regional/Branch Offices & licensees
to ensure coherence of practice and transparency in operation of certification under Scheme-I of
Bureau of Indian Standards (Conformity Assessment) Regulations, 2018 for various products. The
document may also be used by prospective applicants desirous of obtaining BIS certification
licence/certificate.
1. Product : IS 15961:2012
Title : Hot dip Aluminum – Zinc Alloy Metallic Coated Steel Strip
and Sheet (Plain)

No. of amendments : 2
2. Sampling Guidelines
a) Raw material : Base metal shall conform to IS 513 Pt.1 or IS 513 Pt.2
b) Grouping Guidelines : Please refer Annex – A

c) Sample Size : For mechanical test: 1 metre in length

For chemical test : 5 pieces of 5cm X 5cm /50 g drillings

3. List of Test Equipment : Please refer Annex – B

4. Scheme of Inspection and : Please refer Annex – C

Testing

5. Possible tests in a day : All tests

6. Scope of the Licence :

Licence is granted to use Standard Mark as per IS 15961:2012 with the following scope:

Name of the product Hot dip Aluminum – Zinc Alloy Metallic Coated Steel Strip and
Sheet (Plain)

Grade Designation YS250,..

Coating Class AZ70,..

Surface treatment T,..

Surface Finish Normal(N)/ Skin-Passed(S)

Size(Thickness/Width) Thickness..mm upto and including…mm,

Width upto…mm
Length(in case of sheets)

BUREAU OF INDIAN STANDARDS

Manak Bhawan, 9, Bahadur Shah Zafar Marg,
New Delhi – 110002
 ANNEXURE A
TOPRODUCT MANUAL FOR
Hot dip Aluminum – Zinc Alloy Metallic Coated Steel Strip and Sheet (Plain)
According to IS 15961:2012

GROUPING GUIDELINES

1. Hot dip Aluminum – Zinc Alloy Metallic Coated Steel Strip and Sheet according to IS 15961: 2012
is classified on the basis of the following:

• Grade Designation
• Coating Class

2. The following grouping based on type of product, shall be followed for considering grant of
licence/inclusion as per IS 15961:2012:

V)It shall be ensured that manufacturer is having complete manufacturing and testing arrangements
required for the varieties to be covered in the licence
VI) During operation of licence, samples shall be drawn during surveillance visits on rotation basis so
as to cover all grades included in the licence..
Grade Designation Coating Class Remarks
(in Ascending Order) (in Ascending Order)
YS 250 AZ70 i. One sample of any thickness of base metal of Higher
YS 300 AZ100 Yield Stress (Minimum) shall be drawn and tested. On
YS 350 AZ 150 testing of the sample, all grades of higher to lower Yield
YS 450 AZ 200 Stress (Minimum) of all sizes can be covered in scope of
YS 550 licence.

ii. If the above sample tested is of higher coating class eg

(AZ 200) recommendation can include lower coating
classes (AZ 150, AZ 100, AZ 70) also. No separate sample
is required to be drawn for steel with differential coating.
However if sample drawn and tested is of differential
Coating recommendation can include lower coating class
based on the higher coating class of differential coating.

iii. The recommendation on surface treatment/surface finish

should be on the basis of manufacturing facilities.

3. It shall however be ensured that firm has necessary manufacturing capabilities and testing facilities
for the entire sizes/processes proposed to be covered under scope of BIS Certification.

4. During the operation of license, BO shall ensure that all sizes /processes covered in the license are
drawn for independent testing on rotation over a period of time.

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 ANNEXURE B
TO PRODUCT MANUAL FOR
Hot dip Aluminum – Zinc Alloy Metallic Coated Steel Strip and Sheet
According to IS 15961:2012

LIST OF TEST EQUIPMENTS

Major test equipment essentially required to test as per requirements of Indian Standard.

Sl. No. Test Equipment/Chemicals and Tests Used in with Clause Reference
Identification Numbers (Where
applicable)
1. Single Pan Balance of L.C 0.01 g minm Coating test(9)
HCL(sp gr 1.19) (Weight Loss Method)
Distilled Water
Solvent Naptha
Steel scale or Vernier calliper
Hot water arrangement
Alcohol
Running water tap
Dryer
Stop watch
2. XRF Coating test(9)
(Instrument Method)
3. UTM (0-1000KN) Tensile test (8)
4. Steel Mandrels, UTM attachments/clamps/ Adhesion Test(10)
vice/Magnifying glass
5. Weighing Balance Mass(12)
6. Measuring Tape, Vernier Calipers Dimensions, Shape and Tolerances (13)
Filler gauge, flat bench, Micrometer, Cord

Note: The above is an indicative list for the purpose of guidance only

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 ANNEXURE C
TOPRODUCT MANUAL FOR
Hot dip Aluminum – Zinc Alloy Metallic Coated Steel Strip and Sheet
According to IS 15961:2012

SCHEME OF INSPECTION AND TESTING

LABORATORY - A laboratory shall be maintained which shall be suitably equipped (as per the
requirement given in column 2 of Table 1) and staffed, where different tests given in the specification
shall be carried out in accordance with the methods given in the specification.

1.1 The manufacturer shall prepare a calibration plan for the test equipments.

2. TEST RECORDS – The manufacturer shall maintain test records for the tests carried out to
establish conformity.

3. LABELLING, PACKING &MARKING –The Standard Mark as given in Column (1) of the First
Schedule of the license and Licence Number (i.e. CM/L………….) shall be incorporated, and the
marking and packing shall be done as per the provisions of the Indian Standard, provided always that
the product thus marked and packed conforms to all the requirement of the specification.In addition,
details of BIS website as follows: “For details of BIS certification please visitwww.bis.gov.in” shall
be marked on labels affixed/legible marking/stencil on top of packing of coil/sheets.

4. CONTROL UNIT – For the purpose of this scheme, steel sheets /Coils of same Cast/Heat,
produced to same Dimension, grade, Coating Class, Surface Finish and Surface treatment Conditions
under identical conditions and manufactured in a day shall constitute a control unit.

5. LEVELS OF CONTROL - The tests as indicated in column 1 of Table 1 and the levels of control
in column 3 of Table 1, shall be carried out on the whole production of the factory which is covered
by this plan and appropriate records maintained in accordance with paragraph 2 above.

5.1 General requirements relating to the supply of material shall conform to IS 8910 and manufacture
of structural steel shall be as per Cl 5 of IS 15961:2012.

6. TEST CERTIFICATE-For each consignment of BIS Certified material conforming to

IS 15961:2012 there shall be a test certificate which shall contain the Standard Mark, the Control Unit
number and the corresponding test results (as given in Annexure-I enclosed)

7. REJECTIONS – Disposal of non-conforming product shall be done in such a way so as to ensure

that there is no violation of provisions of BIS Act, 2016. Any rejected material which is potentially
re-salable be sheared or cut or deformed in such a manner that it cannot be used for any other purpose
except re-melting. A separate record shall be maintained giving information on quantity and cast
number/coil number/control unit number, as applicable, relating to all such rejections/defective/sub-
standard material of the production not conforming to the requirements of the Specification and the
method of its disposal. Such material shall in no case be stored together with that conforming to the
Specification. The Standard Mark (if already applied) on rejected material should be defaced.

Page 3 of 5
 TABLE 1: LEVELS OF CONTROL

(1) (2) (3)

Test Details Test equipment Levels of Control
Cl. Requirement Test Method requirement No. of Sample Frequency Remarks
Clause Reference R: required (or)
S: Sub-
contracting
permitted
5 Base Metal 5.1 IS 15961:2012 S 1 Each cast in a consignment See Note-3
7.1 IS 513 Pt.1
IS 513 Pt.2
8 Tensile Test 8.1 to IS 15961:2012 R Each Coil/ Each Control Unit In case of agreement
8.3 IS 1608 Pt.1 One Per 1000 between purchaser and
Table-1 sheets or part supplier, frequency of
thereof testing shall be as per
agreement.
9 Coating Test 9.1 to IS 15961:2012 R -do- -do-
9.7
Table-2
10 Coating adhesion 10 IS 15961:2012 R -do- -do-
Test Table-3
11 Freedom From 11.1 IS 15961:2012 R Adequate inspection to ensure that the material is free from defects.
defects 11.2
12& Mass, Dimensions, 12 IS 15961:2012 R Each Coil/One Each Control Unit
13 Shape and 13.1 to IS/ISO 16163 Per 1000 sheets
Tolerances 13.7 or part thereof

Note-1: Whether test equipment is required or sub-contracting is permitted in column 2 shall be decided by the Bureau and shall be mandatory. Sub-contracting is
permitted to a laboratory recognized by the Bureau or Government laboratories empaneled by the Bureau.

Note-2: The control unit and levels of control as decided by the Bureau are obligatory to which the licensee shall comply with.

Note-3:No testing for product analysis is required if material fed to hot dip baths is ISI marked and received with test certificate.

Page 4 of 5
 ANNEXURE I BIS
STANDARD
MARK
(Para 6 of the Scheme of Inspection and Testing)
XYZ IRON AND STEEL COMPANY
(Registered office Address and works address)
TEST CERTIFICATE FOR Hot dip Aluminum – Zinc Alloy Metallic Coated Steel Strip and Sheet
TEST CERTIFICATE No.__________________________________________________________ DATE_____________
TO M/s_________________________________________________________________________________We certified that the material described below fully
conforms to IS15961:2012 Chemical, Physical and Mechanical properties of the product, as tested in accordance with the Scheme of Testing and Inspection
contained in the BIS Certification Marks LicenceNo.CM/L_____________________ are as indicated below against each order No.

(PLEASE REFER TO IS 15961:2012 FOR DETAILS OF SPECIFICATION REQUIREMENTS)

TEST RESULTS

Order Section Control Grade Quantity CHEMICAL COMPOSITION MECHANICAL PROPERTIES Coating
No. & (nom Unit in tonnes class Remarks
Date Size) No.
C S P Si Mn $Cu @
Micro Al CE Tensile Elongation Yield Stress Adhesion test
Alloying % strength
Elements

% % % % % % %
$
For copper-bearing quality
@
Micro-alloying element present should be indicated
REMARKS
WAGON NO.
TRUCK NO. FOR XYZ IRON AND STEEL COMPANY
(It is suggested that size A4 paper be used for this test certificate)

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