Designation: A 1011/A 1011M – 04a

Standard Specification for

Steel, Sheet and Strip, Hot-Rolled, Carbon, Structural, High-
Strength Low-Alloy and High-Strength Low-Alloy with
Improved Formability1
This standard is issued under the fixed designation A 1011/A 1011M; the number immediately following the designation indicates the
year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last
reapproval. A superscript epsilon (e) indicates an editorial change since the last revision or reapproval.

1. Scope* Strength Low-Alloy with Improved Formability, Hot-

1.1 This specification covers hot-rolled, carbon, structural, Rolled, General Requirements for
high-strength low-alloy, and high-strength low-alloy with im- A 749/A 749M Specification for Steel, Strip, Carbon and
proved formability steel sheet and strip, in coils and cut High-Strength, Low-Alloy, Hot-Rolled, General Require-
lengths. ments for
1.2 Hot rolled steel sheet and strip is available in the A 941 Terminology Relating to Steel, Stainless Steel, Re-
designations as listed in 4.1. lated Alloys, and Ferroalloys
1.3 This specification is not applicable to the steel covered E 18 Test Methods for Rockwell Hardness and Rockwell
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by Specification A 635/A 635M. Superficial Hardness of Metallic Materials

1.4 The values stated in either inch-pound units or SI units 3. Terminology
are to be regarded separately as standard. Within the text, the
SI units are shown in brackets. The values stated in each 3.1 Definitions—For definitions of other terms used in this
system are not exact equivalents; therefore, each system must specification refer to Terminology A 941.
be used independently of the other. 3.2 Definitions of Terms Specific to This Standard:
3.2.1 aging—loss of ductility with an increase in hardness,
2. Referenced Documents yield strength, and tensile strength that occurs when steel,
2.1 ASTM Standards: 2 which has been slightly cold worked (such as by temper
A 370 Test Methods and Definitions for Mechanical Testing rolling) is stored for some time.
of Steel Products 3.2.1.1 Discussion—Aging also increases the tendency to-
A 568/A 568M Specification for Steel, Sheet, Carbon, and ward stretcher strains and fluting.
High-Strength, Low-Alloy, Hot-Rolled and Cold-Rolled, 3.2.2 stabilization—addition of one or more nitride or
General Requirements for carbide forming elements, or both, such as titanium and
A 569/A 569M Specification for Steel, Carbon (0.15 Maxi- columbium, to control the level of the interstitial elements
mum, Percent), Hot-Rolled Sheet and Strip Commercial3 carbon and nitrogen in the steel.
A 622/A 622M Specification for Drawing Steel (DS), Sheet 3.2.2.1 Discussion—Stabilization improves formability and
and Strip, Carbon, Hot-Rolled3 increases resistance to aging.
A 635/A 635M Specification for Steel, Sheet and Strip, 3.2.3 vacuum degassing—process of refining liquid steel in
Heavy-Thickness Coils, Carbon, Commercial Steel, Draw- which the liquid is exposed to a vacuum as part of a special
ing Steel, Structural, High-Strength Low-Alloy and High- technique for removing impurities or for decarburizing the
steel.

1
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
4. Classification
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee 4.1 Hot-rolled steel sheet and steel strip is available in the
A01.19 on Steel Sheet and Strip. following designations:
Current edition approved July 1, 2004. Published July 2004. Originally approved
in 2000. Last previous edition approved in 2004 as A 1011/A 1011M - 04. 4.1.1 Commercial Steel (CS Types A, B, C, and D),
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 4.1.2 Drawing Steel (DS Types A and B),
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on NOTE 1—CS Type B and DS Type B describe the most common
the ASTM website. product previously included, respectively, in Specifications A 569/
3
Withdrawn. A 569M and A 622/A 622M.

*A Summary of Changes section appears at the end of this standard.

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 A 1011/A 1011M – 04a
4.1.3 Structural Steel (SS grades 30[205], 33[230], 36[250] 5.1.6.1 As agreed upon between the purchaser and the
Types 1 and 2, 40[275], 45[310], 50[340], 55[380], 60[410], producer, material ordered to this specification will be supplied
70[480], and 80[550]), to meet the appropriate thickness tolerance table shown in
4.1.4 High-Strength Low-Alloy Steel (HSLAS, classes 1 Specifications A 568/A 568M for sheet and A 749/A 749M for
and 2, in grades 45[310], 50[340], 55[380], 60[410], 65[450], strip.
and 70[480]. NOTE 2—Not all producers are capable of meeting all the limitations of
4.1.5 High-Strength Low-Alloy Steel with Improved Form- the thickness tolerance tables in Specifications A 568/A 568M and A 749/
ability (HSLAS-F grades 50[340], 60[410], 70[480], and A 749M. The purchaser should contact the producer prior to placing an
80[550]). order.
4.1.5.1 HSLAS-F steel has improved formability when 5.1.7 Coil size (inside diameter, outside diameter, and maxi-
compared to HSLAS. The steel is fully deoxidized, made to a mum weight),
fine grain practice, and includes microalloying elements such 5.1.8 Copper bearing steel (if required),
as columbium, vanadium, and zirconium. The steel shall be 5.1.9 Quantity,
treated to achieve inclusion control. 5.1.10 Application (part identification and description),
4.1.6 When required for HSLAS and HSLAS-F steels, 5.1.11 Special requirements (if required), and
limitations on the use of one or more of the microalloy 5.1.12 A report of heat analysis will be supplied, if re-
elements shall be specified on the order. quested, for CS and DS. For materials with required mechani-
cal properties, SS, HSLAS, and HSLAS-F, a report is required
5. Ordering Information of heat analysis and mechanical properties as determined by
the tension test.
5.1 It is the purchaser’s responsibility to specify in the
purchase order all ordering information necessary to describe NOTE 3—A typical ordering description is as follows: ASTM A
1011-XX, hot rolled steel sheet, CS Type A, pickled and oiled, cut edge,
the required material. Examples of such information include,
0.075 by 36 by 96 in., thickness tolerance Table 4 of Specification
but are not limited to, the following: A 568/A 568M, 100 000 lb, for part no. 6310, for shelf bracket.
5.1.1 ASTM specification number and year of issue, or:
5.1.2 Name of material and designation (hot-rolled steel ASTM A 1011M-XX, hot rolled steel sheet, CS Type B, pickled and oiled,
sheet) (include grade, type and class, as appropriate, for CS, cut edge, 3.7 by 117 mm by coil, ID 600 mm, OD 1500 mm, max weight
10 000 kg, thickness tolerance Table A1.1 of Specification A 568/A 568M,
DS, SS, HSLAS and HSLAS-F) (see 4.1), 50 000 kg, for upper control arm.
5.1.2.1 When a type is not specified for CS or DS, Type B
will be furnished (see 4.1), 6. General Requirements for Delivery
5.1.2.2 When a class is not specified for HSLAS, Class 1 6.1 Material furnished under this specification shall con-
will be furnished (see 4.1), form to the applicable requirements of the current edition of
5.1.2.3 When a type is not specified for SS Grade 36, Type Specification A 568/A 568M for sheets and Specification
1 will be furnished (see 4.1), A 749/A 749M for strip, unless otherwise provided for herein.
5.1.3 Finish (see 9.1) 7. Chemical Composition
5.1.4 Type of edge (see 9.3), 7.1 The heat analysis of the steel shall conform to the
5.1.5 Oiled or not oiled, as required (see 9.2), chemical composition requirements of the appropriate desig-
5.1.6 Dimensions (thickness, thickness tolerance table (see nation shown in Table 1 for CS and DS and Table 2 for SS,
5.1.6.1), width, and whether cut lengths or coils), HSLAS, and HSLAS-F.

TABLE 1 Chemical CompositionA

For Hot Rolled Steel Sheet and Strip Designations CS and DS
Composition, % Heat Analysis
Element maximum unless otherwise shown
C Mn P S Al Si Cu Ni CrB Mo V Cb TiC N
D,E,F,G H
CS Type A 0.10 0.60 0.030 0.035 ... . . . 0.20 0.20 0.15 0.06 0.008 0.008 0.025 . . .
CS Type BF 0.02 to 0.15 0.60 0.030 0.035 ... . . . 0.20H 0.20 0.15 0.06 0.008 0.008 0.025 . . .
CS Type CD,E,F,G 0.08 0.60 0.10 0.035 ... . . . 0.20H 0.20 0.15 0.06 0.008 0.008 0.025 . . .
CS Type DF 0.10 0.70 0.030 0.035 ... . . . 0.20H 0.20 0.15 0.06 0.008 0.008 0.008 . . .
DS Type AD,E,G 0.08 0.50 0.020 0.030 0.01 min . . . 0.20 0.20 0.15 0.06 0.008 0.008 0.025 . . .
DS Type B 0.02 to 0.08 0.50 0.020 0.030 0.01 min . . . 0.20 0.20 0.15 0.06 0.008 0.008 0.025 . . .
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A
Where an ellipsis (. . .) appears in the table, there is no specified limit, but the analysis shall be reported.
B
Chromium is permitted, at the producer’s option, to 0.25 % maximum when the carbon content is less than or equal to 0.05 %.
C
Titanium is permitted, at producer’s option, to 0.025 % provided the ratio of % titanium to % nitrogen does not exceed 3.4.
D
Specify Type B to avoid carbon levels below 0.02 %.
E
For carbon levels less than or equal to 0.02 %, it is permissible to use vanadium, columbium, or titanium, or combinations thereof, as stabilizing elements at the
producer’s option. In such case, the limits for these elements are 0.10 % for vanadium or columbium and 0.15 % for titanium.
F
When an aluminum deoxidized steel is required, it is permissible to order a minimum of 0.01 % total aluminum.
G
It is permissible to furnish as a vacuum degassed or chemically stabilized steel, or both, at producer’s option.
H
When copper steel is specified, the copper limit is a minimum requirement. When copper steel is not specified, the copper limit is a maximum requirement.

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TABLE 2 Chemical CompositionA
For Hot Rolled Steel Sheet and Strip Designations SS, HSLAS, and HSLAS-F
% Heat Analysis, Element Maximum unless otherwise shown
Designation C Mn P S Al Si CuB Ni Cr Mo V Cb Ti N
SS:
Grade 30 [205] 0.25 0.90 0.035 0.04 . . . . . . 0.20 0.20 0.15 0.06 0.008 0.008 0.008 . . .
Grade 33 [230] 0.25 0.90 0.035 0.04 . . . . . . 0.20 0.20 0.15 0.06 0.008 0.008 0.008 . . .
Grade 36 [250] Type 1 0.25 0.90 0.035 0.04 . . . . . . 0.20 0.20 0.15 0.06 0.008 0.008 0.008 . . .
Grade 36 [250] Type 2C 0.25 1.35 0.035 0.04 . . . . . . 0.20 0.20 0.15 0.06 0.008 0.008 0.008 . . .
Grade 40 [275] 0.25 0.90 0.035 0.04 . . . . . . 0.20 0.20 0.15 0.06 0.008 0.008 0.008 . . .
Grade 45 [310]C 0.25 1.35 0.035 0.04 . . . . . . 0.20 0.20 0.15 0.06 0.008 0.008 0.008 . . .
Grade 50 [340]C 0.25 1.35 0.035 0.04 . . . . . . 0.20 0.20 0.15 0.06 0.008 0.008 0.008 . . .
Grade 55 [380]C 0.25 1.35 0.035 0.04 . . . . . . 0.20 0.20 0.15 0.06 0.008 0.008 0.008 . . .
Grade 60 [410] 0.25 1.35 0.035 0.04 . . . . . . 0.20 0.20 0.15 0.06 0.008 0.008 0.008 . . .
Grade 70 [480] 0.25 1.35 0.035 0.04 . . . . . . 0.20 0.20 0.15 0.06 0.008 0.008 0.008 . . .
Grade 80 [550] 0.25 1.35 0.035 0.04 . . . . . . 0.20 0.20 0.15 0.06 0.008 0.008 0.008 . . .
HSLAS:D
Grade 45 [310] Class 1C 0.22 1.35 0.04 0.04 . . . . . . 0.20 0.20 0.15 0.06 0.005 min 0.005 min 0.005 min . . .
Grade 45 [310] Class 2 0.15 1.35 0.04 0.04 . . . . . . 0.20 0.20 0.15 0.06 0.005 min 0.005 min 0.005 min . . .
Grade 50 [340] Class 1C 0.23 1.35 0.04 0.04 . . . . . . 0.20 0.20 0.15 0.06 0.005 min 0.005 min 0.005 min . . .
Grade 50 [340] Class 2 0.15 1.35 0.04 0.04 . . . . . . 0.20 0.20 0.15 0.06 0.005 min 0.005 min 0.005 min . . .
Grade 55 [380] Class 1C 0.25 1.35 0.04 0.04 . . . . . . 0.20 0.20 0.15 0.06 0.005 min 0.005 min 0.005 min . . .
Grade 55 [380] Class 2 0.15 1.35 0.04 0.04 . . . . . . 0.20 0.20 0.15 0.06 0.005 min 0.005 min 0.005 min . . .
Grade 60 [410] Class 1 0.26 1.50 0.04 0.04 . . . . . . 0.20 0.20 0.15 0.06 0.005 min 0.005 min 0.005 min . . .
Grade 60 [410] Class 2 0.15 1.50 0.04 0.04 . . . . . . 0.20 0.20 0.15 0.06 0.005 min 0.005 min 0.005 min . . .
E
Grade 65 [450] Class 1 0.26 1.50 0.04 0.04 . . . . . . 0.20 0.20 0.15 0.06 0.005 min 0.005 min 0.005 min
E
Grade 65 [450] Class 2 0.15 1.50 0.04 0.04 . . . . . . 0.20 0.20 0.15 0.06 0.005 min 0.005 min 0.005 min

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E
Grade 70 [480] Class 1 0.26 1.65 0.04 0.04 . . . . . . 0.20 0.20 0.15 0.16 0.005 min 0.005 min 0.005 min
E
Grade 70 [480] Class 2 0.15 1.65 0.04 0.04 . . . . . . 0.20 0.20 0.15 0.16 0.005 min 0.005 min 0.005 min
HSLAS-F:D
E
Grade 50 [340] and 60 [410] 0.15 1.65 0.020 0.025 ... ... 0.20 0.20 0.15 0.06 0.005 min 0.005 min 0.005 min
E
Grade 70 [480] and 80 [550] 0.15 1.65 0.020 0.025 ... ... 0.20 0.20 0.15 0.16 0.005 min 0.005 min 0.005 min
A
Where an ellipsis (. . .) appears in the table, there is no requirement but the analysis shall be reported.
B
When copper is specified, the copper limit is a minimum requirement. When copper steel is not specified, the copper limit is a maximum requirement.
C
For each reduction of 0.01 % below the specified carbon maximum, an increase of 0.06 % manganese above the specified maximum will be permitted up to a
maximum of 1.50 % .
D
HSLAS and HSLAS-F steels contain the strengthening elements columbium (niobium), vanadium, titanium, and molybdenum added singly or in combination. The
minimum requirements only apply to the microalloy elements selected for strengthening of the steel.
E
The purchaser has the option of restricting the nitrogen content. It should be noted that, depending on the microalloying scheme (for example, use of vanadium) of
the producer, nitrogen may be a deliberate addition. Consideration should be made for the use of nitrogen binding elements (for example, vanadium, titanium).

TABLE 3 Typical Ranges of Mechanical PropertiesA

7.2 Each of the elements listed in Tables 1 and 2 shall be (Nonmandatory)B
included in the report of the heat analysis. When the amount of For Hot-Rolled Steel Sheet and Strip Designations CS and DS
copper, nickel, chromium, or molybdenum is less than 0.02 %, Elongation in 2 in. [50
Designation Yield StrengthC
report the analysis as <0.02 % or the actual determined value. mm]%C
ksi MPa
When the amount of vanadium, columbium, or titanium is less CS Types A, B, C, and D 30 to 50 [205 to 340] $25
than 0.008 %, report the analysis as <0.008 % or the actual DS Types A and B 30 to 45 [205 to 310] $28
determined value. A
The yield strength tends to increase and the elongation tends to decrease as
7.3 Sheet steel grades defined by this specification are the sheet thickness decreases. These properties represent those typical of
suitable for welding if appropriate welding conditions are material in the thickness range of 0.100 to 0.150 in. [2.5 to 3.5 mm] for CS Types
A, B, and DS Types A and B and in the thickness ranges of 0.060 to 0.075 in. [1.5
selected. For certain welding processes, if more restrictive to 1.9 mm] for CS Type D.
composition limits are desirable, they shall be specified at the B
The typical mechanical property values presented here are nonmandatory.
time of inquiry and confirmed at the time of ordering. They are provided to assist the purchaser in specifying a suitable steel for a given
application. Values outside these ranges are to be expected.
C
Yield strength and elongation are measured in the longitudinal direction in
8. Mechanical Properties accordance with Test Methods and Definitions A 370.
8.1 CS and DS:
8.1.1 Typical, nonmandatory mechanical properties for CS 8.2.2.1 Requirements—Material as represented by the test
and DS are found in Table 3. specimen shall conform to the mechanical property require-
8.1.2 The material shall be capable of being bent at room ments specified in Table 4. These requirements do not apply to
temperature in any direction through 180° flat on itself without the uncropped ends of unprocessed coils.
cracking on the outside of the bent portion (see the section on 8.2.2.2 Number of Tests—Two tension tests shall be made
bend test in Test Methods and Definitions A 370). from each heat or from each 50 tons [45 000 kg]. When the
8.2 SS, HSLAS, and HSLAS-F: amount of finished material from a heat is less than 50 tons
8.2.1 The available grades and corresponding mechanical [45 000 kg], one tension test shall be made. When material
properties for SS, HSLAS, and HSLAS-F are shown in Table rolled from one heat differs 0.050 in. [1.27 mm] or more in
4. thickness, one tension test shall be made from the thickest and
8.2.2 Tension Tests: thinnest material regardless of the weight represented.

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TABLE 4 Mechanical Property RequirementsA
For Hot Rolled Steel Sheet and Strip Designations SS, HSLAS, and HSLAS-F
Elongation in 8 in.
Designation Yield Strength Tensile StrengthB Elongation in 2 in. [50 mm] min, % for Thicknesses: [200 mm], % for
Thickness:
Under 0.230 Under 0.097 [2.5 Under 0.064 [1.6
Under 0.230 [6.0
ksi [MPa] min ksi [MPa] min [6.0 mm] to 0.097 mm] to 0.064 [1.6 mm] to 0.025 [0.65
mm]
[2.5 mm] mm] mm]
SS:
Grade 30 [205] 30 [205] 49 [340] 25 24 21 19
Grade 33 [230] 33 [230] 52 [360] 23 22 18 18
Grade 36 [250] Type 1 36 [250] 53 [365] 22 21 17 17
Grade 36 [250] Type 2 36 [250] 58-80 [400-550] 21 20 16 16
Grade 40 [275] 40 [275] 55 [380] 21 20 15 16
Grade 45 [310] 45 [310] 60 [410] 19 18 13 14
Grade 50 [340] 50 [340] 65 [450] 17 16 11 12
Grade 55 [380] 55 [380] 70 [480] 15 14 9 10
Grade 60 [410] 60 [410] 75 [480] 14 13 8 9
Grade 70 [480] 70 [480] 85 [550] 13 12 7 8
Grade 80 [550] 80 [550] 95 [620] 12 11 6 7

HSLAS: Over 0.097 in. [2.5 mm] Up to 0.097 [2.5 mm] . . .

Grade 45 [310] Class 1 45 [310] 60 [410] 25 23 . . .
Grade 45 [310] Class 2 45 [310] 55 [380] 25 23 . . .
Grade 50 [340] Class 1 50 [340] 65 [450] 22 20 . . .
Grade 50 [340] Class 2 50 [340] 60 [410] 22 20 . . .
Grade 55 [380] Class 1 55 [380] 70 [48 0] 20 18 . . .
Grade 55 [380] Class 2 55 [380] 65 [450] 20 18 . . .
Grade 60 [410] Class 1 60 [410] 75 [520] 18 16 . . .
Grade 60 [410] Class 2 60 [410] 70 [480] 18 16 . . .
Grade 65 [450] Class 1 65 [450] 80 [550] 16 14 . . .
Grade 65 [450] Class 2 65 [450] 75 [520] 16 14 . . .
Grade 70 [480] Class 1 70 [480] 85 [585] 14 12 . . .
Grade 70 [480] Class 2 70 [480] 80 [550] 14 12 . . .

HSLAS-F:
Grade 50 [340] 50 [340] 60 [410] 24 22 . . .
Grade 60 [410] 60 [410] 70 [480] 22 20 . . .
Grade 70 [480] 70 [480] 80 [550] 20 18 . . .
Grade 80 [550] 80 [550] 90 [620] 18 16 . . .
A
For coil products, testing by the producer is limited to the end of the coil. Mechanical properties throughout the coil shall comply with the minimum values specified.
B
A minimum and maximum tensile strength has been specified for SS36 Type 2.

8.2.2.3 Tension test specimens shall be taken at a point 9.1.1 Unless otherwise specified, the material shall be fur-
immediately adjacent to the material to be qualified. nished as rolled, that is, without removing the hot-rolled oxide
8.2.2.4 Tension test specimens shall be taken from the full or scale.
thickness of the sheet as-rolled. 9.1.2 When required, it is permissible to specify that the
8.2.2.5 Tension test specimens shall be taken from a loca- material be pickled or blast cleaned (descaled).
tion approximately halfway between the center of sheet and the 9.2 Oiling:
edge of the material as-rolled.
9.2.1 Unless otherwise specified, as-rolled material shall be
8.2.2.6 Tension test specimens shall be taken with the
furnished not oiled (that is, dry), and pickled or blast cleaned
lengthwise axis of the test specimen parallel to the rolling
material shall be furnished oiled.
direction (longitudinal test)
8.2.2.7 Test Method—Yield strength shall be determined by 9.3 Edges:
either the 0.2 % offset method or the 0.5 % extension under 9.3.1 Steel sheet is available with mill edge or cut edge.
load method unless otherwise specified. 9.3.2 Steel strip is available with mill edge or cut edge.
8.2.3 Bending Properties:
8.2.3.1 The suggested minimum inside radii for cold bend- 10. Retests and Resamples
ing are listed in Appendix X1 and is discussed in more detail 10.1 Retests—If the results on an original tension test
in Specifications A 568/A 568M (6.6) and A 749/A 749M specimen are within 2 ksi [14 MPa] of the required tensile
(7.6). Where a tighter bend radius is required, where curved or strength, within 1 ksi [7 MPa] of the required yield strength, or
offset bends are involved, or where stretching or drawing are within two percentage points of the required elongation, a
also a consideration, the producer shall be consulted. retest shall be permitted for which one test specimen selected
at random shall be tested. If the results on this retest specimen
9. Finish and Appearance satisfy the specified mechanical properties and all other re-
9.1 Surface Finish: quirements of the applicable specification are satisfied, the
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material shall be accepted. Retests are permitted in accordance an electronic data interchange (EDI) transmission shall be
with Specification A 568/A 568M. regarded as having the same validity as a counterpart printed in
10.2 Resamples—Resamples are permitted in accordance the certifier’s facility. The content of the EDI transmitted
with Specification A 568/A 568M. document must meet the requirements of the invoked ASTM
standard and the purchaser and the supplier. Notwithstanding
11. Certification the absence of a signature, the organization submitting the EDI
11.1 A report of heat analysis shall be supplied, if requested, transmission is responsible for the content of the report.
for CS and DS steels. For material with required mechanical
properties, SS, HSLAS, and HSLAS-F, a report is required of 12. Product Marking
heat analysis and mechanical properties as determined by the 12.1 In addition to the requirements of Specification A 568/
tension test. A 568M for sheet and Specification A 749/A 749M for strip,
11.2 The report shall include the purchase order number; the each lift or coil shall be marked with the designation shown on
ASTM designation number and year date; product designation; the order {CS (Type A, B, or C), DS (Type A or B), SS (Grade
grade; type or class, as applicable; the heat number; and as and for SS36, Type), HSLAS (Grade and Class), or HSLAS-F
required, heat analysis and mechanical properties as indicated (Grade)}. The designation shall be legibly stenciled on the top
by the tension test. of each lift or shown on a tag attached to each coil or shipping
11.3 A signature is not required on the test report. However, unit.
the document shall clearly identify the organization submitting
the report. Notwithstanding the absence of a signature, the 13. Keywords
organization submitting the report is responsible for the content 13.1 carbon steel sheet; carbon steel strip; commercial steel;
of the report. drawing steel; high strength-low alloy steel; high strength-low
11.4 A Material Test Report, Certificate of Inspection, or alloy steel with improved formability; hot-rolled steel sheet;
similar document printed from or used in electronic form from hot-rolled steel strip; steel sheet; steel strip; structural steel

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APPENDIXES

(Nonmandatory Information)

X1. BENDING PROPERTIES

TABLE X1.1 Suggested Minimum Inside Radius for Cold Bending

NOTE 1—(t) Equals a radius equivalent to the steel thickness.

NOTE 2—The suggested radius should be used as a minimum for 90° bends in actual shop practice.

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NOTE 3—Material which does not perform satisfactorily, when fabricated in accordance with the above requirements, may be subject to rejection
pending negotiation with the steel supplier.
Product Grade Minimum Inside Radius for Cold Bending
Structural Steel 30[205] 1t
33[230] 1t
36[250] Type 1 11⁄2 t
36[250] Type 2 2t
40[275] 2t
45[310] 2t
50[340] 21⁄2 t
55[380] 3t
60[410] 31⁄2 t
70[480] 4t
80[550] 4t
High-Strength Low-Alloy Steel Class 1 Class 2
45[310] 11⁄2 t 11⁄2 t
50[340] 2t 11⁄2 t
55[380] 2t 2t
60[410] 21⁄2 t 2t
65[450] 3t 21⁄2 t
70[480] 31⁄2 t 3t
High-Strength Low-Alloy Steel
with Improved Formability
50[340] 1t
60[410] 11⁄2 t
70[480] 2t
80[550] 2t

X2. RELATED ISO STANDARDS

The ISO standards listed below may be reviewed for ISO 4996 Hot-rolled Steel Sheet of High Yield Stress
comparison with this ASTM standard. The relationship be- Structural Quality
tween the standards may only be approximate; therefore, the ISO 5951 Hot-rolled Steel Sheet of Higher Yield Strength
respective standards should be consulted for actual require- with Improved Formability
ments. Those who use these documents must determine which
ISO 6316 Hot-rolled Carbon Steel Strip of Structural
specifications address their needs.
Quality
ISO 3573 Hot-rolled Carbon Steel Sheet of Commercial
and Drawing Qualities ISO 6317 Hot-rolled Carbon Steel Strip of Commercial
ISO 4995 Hot-rolled Steel Sheet of Structural Quality and Drawing Qualities

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 A 1011/A 1011M – 04a

X3. HARDNESS PROPERTIES

X3.1 Table X3.1 lists the typical hardness values.

TABLE X3.1 Typical Hardness Values

NOTE 1—The hardness values shown are at the time of shipment.

NOTE 2—Tests for hardness shall be conducted in accordance with the
requirements of Test Methods E 18.
NOTE 3—The hardness values are Rockwell B scale as measured or
converted from the appropriate Rockwell scales.
NOTE 4—The typical hardness values apply to the full range of steel
sheet thickness. Hardness tends to increase as the steel sheet thickness
decreases.
NOTE 5—Hardness testing is commonly used to assess the relative
formability of various designations of uncoated steel sheet. This assess-
ment done by many users is recognized to be only an approximation of the
relative formability and therefore cannot be used as a specification
requirement.
Designation Hardness-Rockwell B Scale
CS Type A 75 or less
CS Type B 75 or less
CS Type C 75 or less
DS 65 or less

SUMMARY OF CHANGES

Committee A01 has identified the location of selected changes to this standard since the last issue, A 1011/A 1011M – 04, that
may impact the use of this standard. (Approved July 1, 2004.)

Revisions to Table 2: (3) Added limits for titanium.

(1) Increased the Mo limit to 0.16 % for HSLAS Grade 70, (4) Deleted old Footnotes B, D, and I.
Classes 1 and 2, and HSLAS-F Grades 70 and 80. (5) Replaced old Footnotes G and H with new Footnote D.
(2) Revised the vanadium limit for HSLAS and HSLAS-F.

Committee A01 has identified the location of selected changes to this standard since the last issue, A 1011/A 1011M – 03a,
that may impact the use of this standard. (Approved April 1, 2004.)

(1) Added the word “carbon” to 1.1. SS Grade 55, HSLAS Grade 45 Class 1, HSLAS Grade 50
(2) Added new Footnote E to Table 2. Class 1, and HSLAS Grade 55 Class 1.
(3) Footnote E applied to SS Grade 36 Type 2, SS Grade 45,

Committee A01 has identified the location of selected changes to this standard since the last issue, A 1011/A 1011M – 03, that
may impact the use of this standard. (Approved Oct. 1, 2003.)

(1) Added Section 4.1.6. and new footnote to Table 2.

(2) Deleted Supplementary Requirement S1. (8) Revised Footnote A of Table 2 to refer to CS Type D.
(3) Revised Section 5.1.11. (9) Added reference to CS Type D to Table 4.
(4) Added reference to CS Type D to Section 4.1.1.
(5) Added new designations to Section 4.1.3. (10) Added bending information for Grades 60, 70, and 80 to
(6) Added chemical requirements for CS Type D to Table 1. Table X1.1.
(7) Added chemical requirements for Grades 60, 70, and 80, (11) Added Appendix X3.

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 A 1011/A 1011M – 04a
Committee A01 has identified the location of selected changes to this standard since the last issue, A 1011/A 1011M – 02, that
may impact the use of this standard. (Approved April 10, 2003.)

(1) Revisions were made to Tables 1 and 2. 7.2, 7.3, and 9.1.2.
(2) Revisions were made to the following sections: 4.1.5.1,

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