ASTM A1083/A1083M-12(2017)
(Specification)Standard Specification for Steel, Sheet, Cold-Rolled, Carbon, Structural, High-Strength Low-Alloy, Produced by Twin-Roll Casting Process
Standard Specification for Steel, Sheet, Cold-Rolled, Carbon, Structural, High-Strength Low-Alloy, Produced by Twin-Roll Casting Process
ABSTRACT
This specification covers cold-rolled, carbon, structural, and high-strength low-alloy, in coils and cut lengths produced by the twin-roll casting process. Cold-rolled steel sheet is available in the following designations: commercial steel, drawing steel, structural steel, and high-strength low-alloy steel. Sheet steel grades defined by this specification are suitable for welding if appropriate welding conditions are selected. For certain welding processes, if more restrictive composition limits are desirable, they shall be specified at the time of inquiry and confirmed at the time of ordering. The material shall be capable of being bent, at room temperature, in any direction through 180° flat on itself without cracking on the outside of the bent portion. Two tension tests shall be made from each heat or from each 50 tons [45,000 kg]. Yield strength shall be determined by either the 0.2 % offset method or the 0.5 % extension under load method unless otherwise specified.
SCOPE
1.1 This specification covers cold-rolled, carbon, structural, and high-strength low-alloy, in coils and cut lengths produced by the twin-roll casting process.
1.2 Cold rolled steel sheet produced by the twin-roll casting process is available in the designations as listed in 4.1.
1.3 This specification does not apply to steel strip as described in Specification A109/A109M.
1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: A1083/A1083M −12 (Reapproved 2017)
Standard Specification for
Steel, Sheet, Cold-Rolled, Carbon, Structural, High-Strength
Low-Alloy, Produced by Twin-Roll Casting Process
This standard is issued under the fixed designation A1083/A1083M; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope A568/A568M Specification for Steel, Sheet, Carbon,
Structural,andHigh-Strength,Low-Alloy,Hot-Rolledand
1.1 This specification covers cold-rolled, carbon, structural,
Cold-Rolled, General Requirements for
and high-strength low-alloy, in coils and cut lengths produced
A941 TerminologyRelatingtoSteel,StainlessSteel,Related
by the twin-roll casting process.
Alloys, and Ferroalloys
1.2 Cold rolled steel sheet produced by the twin-roll casting
E18 Test Methods for Rockwell Hardness of Metallic Ma-
process is available in the designations as listed in 4.1.
terials
E517 Test Method for Plastic Strain Ratio r for Sheet Metal
1.3 This specification does not apply to steel strip as
described in Specification A109/A109M. E646 Test Method for Tensile Strain-Hardening Exponents
(n -Values) of Metallic Sheet Materials
1.4 The values stated in either SI units or inch-pound units
are to be regarded separately as standard. The values stated in
3. Terminology
each system may not be exact equivalents; therefore, each
system shall be used independently of the other. Combining 3.1 Definitions of Terms Specific to This Standard:
values from the two systems may result in non-conformance
3.1.1 For definitions of other terms used in this
with the standard.
specification, refer to Terminology A941.
3.2 aging, n—loss of ductility with an increase in hardness,
1.5 This standard does not purport to address all of the
yield strength, and tensile strength that occurs when steel that
safety concerns, if any, associated with its use. It is the
has been slightly cold worked (such as by temper rolling) is
responsibility of the user of this standard to establish appro-
stored for some time.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
3.2.1 Discussion—Agingincreasesthetendencyofasteelto
1.6 This international standard was developed in accor-
exhibit stretcher strains and fluting.
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
4. Classification
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical 4.1 Cold-rolled steel sheet is available in the following
Barriers to Trade (TBT) Committee. designations:
4.1.1 Commercial Steel (CS Types A, B, and D).
2. Referenced Documents
4.1.2 Drawing Steel (DS Types B and D).
2.1 ASTM Standards:
4.1.3 Structural Steel (SS grades 25[170], 30[205], 33[230]
A109/A109M Specification for Steel, Strip, Carbon (0.25
Types 1 and 2, 40[275] Types 1 and 2, 50[340], 60[410],
Maximum Percent), Cold-Rolled
70[480], and 80[550]).
A370 Test Methods and Definitions for Mechanical Testing
4.1.4 High-Strength Low-Alloy Steel (HSLAS, in classes 1
of Steel Products
and 2, in grades 45[310], 50[340]. 55[380], 60[410], 65[450],
70[480] and 80[550].
This specification is under the jurisdiction ofASTM Committee A01 on Steel,
4.2 When required for HSLAS steels, limitations on the use
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
A01.19 on Steel Sheet and Strip.
of one or more of the microalloy elements, titanium,
Current edition approved Sept. 1, 2017. Published September 2017. Originally
columbium, vanadium, or molybdenum, shall be specified on
approved in 2012. Last previous edition approved in 2012 as A1083/A1083M – 12.
the order.
DOI: 10.1520/A1083_A1083M-12R17.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
4.3 Cold-rolled steel sheet is supplied for either exposed or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
unexposed applications. Within the latter category, cold-rolled
Standards volume information, refer to the standard’s Document Summary page on
theASTM website. sheet is specified either “temper rolled” or “annealed last.” For
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
A1083/A1083M − 12 (2017)
details on processing, attributes and limitations, and inspection 5.1.11 A report of heat analysis will be supplied, if
standards, refer to Specification A568/A568M. requested, for CS, and DS. For materials with required me-
chanical properties, SS, and HSLAS, a report is required of
5. Ordering Information heat analysis and mechanical properties as determined by the
tension test, and
5.1 It is the purchaser’s responsibility to specify in the
5.1.12 Special requirements (if any).
purchase order all ordering information necessary to describe
5.1.12.1 When the purchaser requires thickness tolerances
the required material. Examples of such information include,
for 3/8 in. [10 mm] minimum edge distance (see Supplemen-
but are not limited to, the following:
tary Requirement in Specification A568/A568M), this require-
5.1.1 ASTM specification number and year of issue;
ment shall be specified in the purchase order or contract.
5.1.2 Name of material and designation (cold-rolled steel
sheet) (include grade, type, and class, as appropriate, for CS,
NOTE 2—A typical ordering description is as follows: ASTM A
XXXX-XX, cold rolled steel sheet, CS Type A, exposed, matte finish,
DS, SS, HSLAS, (see 4.1);
oiled,0.035by30in.bycoil,ID24in.,OD48in.,maxweight15000lbs,
5.1.2.1 When a type is not specified for CS or DS, Type D
100 000 lb, for part No. 4560, Door Panel. Or ASTM A XXXXM-XX,
will be furnished (see 4.1);
cold-rolled steel sheet, SS grade 275, unexposed, matte finish, oiled, 0.88
5.1.2.2 When a class is not specified for HSLAS, Class 1
mm by 760 mm by 2440 mm, 10 000 kg, for shelf bracket.
will be furnished (see 4.1);
5.1.2.3 When a type is not specified for SS 33 [230] and SS
6. General Requirements for Delivery
40 [275], Type 1 will be furnished (see 4.1);
6.1 Material furnished under this specification shall con-
5.1.3 Classification (either exposed, unexposed, temper
form to the applicable requirements of the current edition of
rolled, or annealed last) (see 4.3);
Specification A568/A568M unless otherwise provided herein.
5.1.4 Finish (see 9.1);
5.1.5 Oiled or not oiled, as required (see 9.1);
7. Chemical Composition
5.1.5.1 Unless otherwise specified, the sheet shall be oiled.
7.1 The heat analysis of the steel shall conform to the
5.1.5.2 When required, specify the sheet to be furnished not
chemical composition requirements of the appropriate desig-
oiled (dry).
nation shown in Table 1 for CS, and DS, and in Table 2 and
5.1.6 Dimensions(thickness,width,andwhethercutlengths
Table 3 for SS and HSLAS.
or coils);
7.2 Each of the elements listed in Table 1, Table 2, and
NOTE 1—Not all producers are capable of meeting all the limitations
Table 3 shall be included in the report of the heat analysis.
of the thickness tolerance tables in Specification A568/A568M. The
purchaser should contact the producer regarding possible limitations prior
When the amount of copper, nickel, chromium, or molybde-
to placing an order.
num is less than 0.02 %, report the analysis as <0.02 % or the
5.1.7 Coil size (must include inside diameter, outside actual determined value. When the amount of vanadium,
diameter, and maximum weight); columbium, or titanium is less than 0.008 %, report the
5.1.8 Copper bearing steel (if required); analysis as <0.008 % or the actual determined value.When the
5.1.9 Quantity; amount of boron is less than 0.0005 %, report the analysis as
5.1.10 Application (part identification and description); <0.0005 % or the actual determined value.
A
TABLE 1 Chemical Composition
For Cold Rolled Steel Sheet Designations CS and DS
% Heat Analysis, Element Maximum Unless Otherwise Shown
F B C
Designation C Mn P S Al Si Cu Ni Cr Mo V Cb Ti NB
CS 0.10 0.70 0.030 0.035 . . 0.50 0.20 0.15 0.06 0.008 0.008 0.025 . .
D, E
Type A
CS 0.02 to 0.60 0.030 0.035 . . 0.50 0.20 0.15 0.06 0.008 0.008 0.025 . .
D
Type B 0.15
CS 0.15 0.80 0.10 0.035 . . 0.50 0.30 0.30 0.15 0.008 0.008 0.025 . .
D,E
Type D
DS 0.02 to 0.50 0.020 0.030 . . 0.50 0.20 0.15 0.06 0.008 0.008 0.025 . .
Type B 0.15
DS 0.15 0.60 0.030 0.035 . . 0.50 0.30 0.30 0.15 0.008 0.008 0.025 . .
Type D
A
Where an ellipsis (. . .) appears in the table, there is no requirement, but the analysis result 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
For steels containing 0.02 % or more carbon, titanium is permitted at the producer’s option, to the lesser of 3.4N + 1.5S or 0.025 %.
D
When an aluminum deoxidized steel is required for the application, it is permissible to order Commercial Steel (CS) to a minimum of 0.01 % total aluminum.
E
Specify Type B to avoid carbon levels below 0.02 %.
F
F When copper steel is specified, a minimum of 0.20% is required. When copper steel is not specified, the copper limit is a maximum requirement.
A1083/A1083M − 12 (2017)
A
TABLE 2 Chemical Composition
For Cold Rolled Steel Sheet Designations SS and HSLAS
% Heat Analysis, Element Maximum Unless Otherwise Shown
Designation C Mn P S Al Si V Cb Ti N
B
SS:
Grade 25 [170] 0.20 0.60 0.035 0.035 . . 0.008 0.008 0.025 .
Grade 30 [205] 0.20 0.60 0.035 0.035 . . 0.008 0.008 0.025 .
Grade 33 [230] 0.20 0.60 0.035 0.035 . . 0.008 0.008 0.025 .
Type 1
Grade 33 [230] 0.15 0.60 0.20 0.035 . . 0.008 0.008 0.025 .
Type 2
Grade 40 [275] 0.20 1.35 0.035 0.035 . . 0.008 0.008 0.025 .
Type 1
Grade 40 [275] 0.15 0.60 0.20 0.035 . . 0.008 0.008 0.025 .
Type 2
Grade 45 [310] 0.20 1.35 0.070 0.025 0.08 0.60 0.08 0.08 0.025 0.030
Grade 50 [340] 0.20 1.35 0.035 0.035 . . 0.08 0.08 0.025 .
Grade 60 [410] 0.20 1.35 0.035 0.035 . . 0.08 0.08 0.025 .
Grade 70 [480] 0.20 1.35 0.035 0.035 . . 0.08 0.08 0.025 .
Grade 80 [550] 0.20 1.35 0.035 0.035 . . 0.08 0.08 0.025 .
C
HSLAS:
Grade 45 [310] .22 1.35 0.04 0.04 . . 0.005 0.005 0.005 .
Class 1 min min min
Grade 45 [310] 0.15 1.35 0.04 0.04 . . 0.005 0.005 0.005 .
Class 2 min min min
Grade 50 [340] 0.23 1.35 0.04 0.04 . . 0.005 0.005 0.005 .
Class 1 min min min
Grade 50 [340] 0.15 1.35 0.04 0.04 . . 0.005 0.005 0.005 .
Class 2 min min min
Grade 55 [380] 0.25 1.35 0.04 0.04 . . 0.005 0.005 0.005 .
Class 1 min min min
Grade 55 [380] 0.15 1.35 0.04 0.04 . . 0.005 0.005 0.005 .
Class 2 min min min
Grade 60 [410] 0.26 1.50 0.04 0.04 . . 0.005 0.005 0.005 .
Class 1 min min min
Grade 60 [410] 0.15 1.50 0.04 0.04 . . 0.005 0.005 0.005 .
Class 2 min min min
D
Grade 65 [480] 0.26 1.50 0.04 0.04 . . 0.005 0.005 0.005 .
Class 1 min min min
D
Grade 65 [450] 0.15 1.50 0.04 0.04 . . 0.005 0.005 0.005 .
Class 2 min min min
D
Grade 70 [480] 0.26 1.65 0.04 0.04 . . 0.005 0.005 0.005 .
Class 1 min min min
D
Grade 70 [550] 0.15 1.65 0.04 0.04 . . 0.005 0.005 0.005 .
Class 2 min min min
D
Grade 80 [550] 0.26 1.65 0.04 0.04 . . 0.005 0.005 0.005 .
Class 1 min min min
D
Grade 80 [550] 0.15 1.65 0.04 0.04 . . 0.005 0.005 0.005 .
Class 2 min min min
A
Where an ellipsis (. . .) appears in the table, there is no requirement but the analysis shall be reported.
B
Titanium is permitted for SS designations, at the producer’s option, to the lesser of 3.4N + 1.5S or 0.025 %.
C
HSLAS 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.
D
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 is permitted as a deliberate addition. Consideration should be made for the use of nitrogen binding elements (for example, vanadium, titanium).
7.3 Sheet steel grades defined by this specification are Test Methods and Definitions A370). The bend test is not a
suitable for welding if appropriate welding conditions are requirement of delivery. However, if testing is performed by
selected. For certain welding processes, if more restrictive
the purchaser, material not conforming to the requirement shall
composition limits are desirable, they shall be specified at the
be subject to rejection.
time of inquiry and confirmed at the time of ordering.
8.1.3 Sheet of these designations are subject to aging
dependent upon processing factors such as the method of
8. Mechanical Properties
annealing(continuousannealingorboxannealing),andchemi-
8.1 CS and DS:
cal composition. For additional information on aging, see
8.1.1 Typical nonmandatory mechanical properties for CS,
Appendix X1 of Specification A568/A568M.
and DS, are shown in Table 4.
8.2 SS and HSLAS:
8.1.2 The material shall be capable of being bent, at room
8.2.1 The available strength grades for SS, and HSLAS are
temperature,inanydirectionthrough180°flatonitselfwithout
cracking on the outside of the bent portion (see Section 14 of shown in Table 5.
A1083/A1083M − 12 (2017)
TABLE 3 Chemical Requirements: Cu, Ni, Cr, and Mo for
8.2.2.6 Tension test samples shall be taken with the length-
Structural Steels and High-Strength Low-Alloy Steels
wise axis of the test specimen parallel to the rolling direction
% Heat Analysis, Maximum Unless Otherwise Specified
(longitudinal test).
A,B B B,C B,C
Designation Limits Cu Ni Cr Mo
8.2.2.7 Test Method—Yield strength shall be determined by
SS:
either the 0.2 % offset method or the 0.5 % extension under
All Grades L 0.35 0.20 0.15 0.06
H 0.50 0.30 0.30 0.16
load method unless otherwise specified.
HSLAS:
All Grades L 0.35 0.20 0.15 0.06 8.3 Bending Properties:
and Classes
8.3.1 Suggested minimum inside radii for cold bending are
H 0.50 0.30 0.30 0.16
listed in Appendix X1 and are discussed in more detail in
A
When copper is specified, a minimum of 0.20 % is required. When copper steel
Specification A568/A568M (Section 6). Where a
...
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: A1083/A1083M − 12 (Reapproved 2017)
Standard Specification for
Steel, Sheet, Cold-Rolled, Carbon, Structural, High-Strength
Low-Alloy, Produced by Twin-Roll Casting Process
This standard is issued under the fixed designation A1083/A1083M; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope A568/A568M Specification for Steel, Sheet, Carbon,
Structural, and High-Strength, Low-Alloy, Hot-Rolled and
1.1 This specification covers cold-rolled, carbon, structural,
Cold-Rolled, General Requirements for
and high-strength low-alloy, in coils and cut lengths produced
A941 Terminology Relating to Steel, Stainless Steel, Related
by the twin-roll casting process.
Alloys, and Ferroalloys
1.2 Cold rolled steel sheet produced by the twin-roll casting
E18 Test Methods for Rockwell Hardness of Metallic Ma-
process is available in the designations as listed in 4.1.
terials
1.3 This specification does not apply to steel strip as E517 Test Method for Plastic Strain Ratio r for Sheet Metal
E646 Test Method for Tensile Strain-Hardening Exponents
described in Specification A109/A109M.
(n -Values) of Metallic Sheet Materials
1.4 The values stated in either SI units or inch-pound units
are to be regarded separately as standard. The values stated in
3. Terminology
each system may not be exact equivalents; therefore, each
system shall be used independently of the other. Combining 3.1 Definitions of Terms Specific to This Standard:
values from the two systems may result in non-conformance
3.1.1 For definitions of other terms used in this
with the standard.
specification, refer to Terminology A941.
3.2 aging, n—loss of ductility with an increase in hardness,
1.5 This standard does not purport to address all of the
yield strength, and tensile strength that occurs when steel that
safety concerns, if any, associated with its use. It is the
has been slightly cold worked (such as by temper rolling) is
responsibility of the user of this standard to establish appro-
stored for some time.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
3.2.1 Discussion—Aging increases the tendency of a steel to
1.6 This international standard was developed in accor-
exhibit stretcher strains and fluting.
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
4. Classification
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
4.1 Cold-rolled steel sheet is available in the following
Barriers to Trade (TBT) Committee. designations:
4.1.1 Commercial Steel (CS Types A, B, and D).
2. Referenced Documents
4.1.2 Drawing Steel (DS Types B and D).
2.1 ASTM Standards:
4.1.3 Structural Steel (SS grades 25[170], 30[205], 33[230]
A109/A109M Specification for Steel, Strip, Carbon (0.25
Types 1 and 2, 40[275] Types 1 and 2, 50[340], 60[410],
Maximum Percent), Cold-Rolled
70[480], and 80[550]).
A370 Test Methods and Definitions for Mechanical Testing
4.1.4 High-Strength Low-Alloy Steel (HSLAS, in classes 1
of Steel Products
and 2, in grades 45[310], 50[340]. 55[380], 60[410], 65[450],
70[480] and 80[550].
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
4.2 When required for HSLAS steels, limitations on the use
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
A01.19 on Steel Sheet and Strip. of one or more of the microalloy elements, titanium,
Current edition approved Sept. 1, 2017. Published September 2017. Originally
columbium, vanadium, or molybdenum, shall be specified on
approved in 2012. Last previous edition approved in 2012 as A1083/A1083M – 12.
the order.
DOI: 10.1520/A1083_A1083M-12R17.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
4.3 Cold-rolled steel sheet is supplied for either exposed or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
unexposed applications. Within the latter category, cold-rolled
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. sheet is specified either “temper rolled” or “annealed last.” For
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
A1083/A1083M − 12 (2017)
details on processing, attributes and limitations, and inspection 5.1.11 A report of heat analysis will be supplied, if
standards, refer to Specification A568/A568M. requested, for CS, and DS. For materials with required me-
chanical properties, SS, and HSLAS, a report is required of
5. Ordering Information heat analysis and mechanical properties as determined by the
tension test, and
5.1 It is the purchaser’s responsibility to specify in the
5.1.12 Special requirements (if any).
purchase order all ordering information necessary to describe
5.1.12.1 When the purchaser requires thickness tolerances
the required material. Examples of such information include,
for 3/8 in. [10 mm] minimum edge distance (see Supplemen-
but are not limited to, the following:
tary Requirement in Specification A568/A568M), this require-
5.1.1 ASTM specification number and year of issue;
ment shall be specified in the purchase order or contract.
5.1.2 Name of material and designation (cold-rolled steel
sheet) (include grade, type, and class, as appropriate, for CS,
NOTE 2—A typical ordering description is as follows: ASTM A
XXXX-XX, cold rolled steel sheet, CS Type A, exposed, matte finish,
DS, SS, HSLAS, (see 4.1);
oiled, 0.035 by 30 in. by coil, ID 24 in., OD 48 in., max weight 15 000 lbs,
5.1.2.1 When a type is not specified for CS or DS, Type D
100 000 lb, for part No. 4560, Door Panel. Or ASTM A XXXXM-XX,
will be furnished (see 4.1);
cold-rolled steel sheet, SS grade 275, unexposed, matte finish, oiled, 0.88
5.1.2.2 When a class is not specified for HSLAS, Class 1
mm by 760 mm by 2440 mm, 10 000 kg, for shelf bracket.
will be furnished (see 4.1);
5.1.2.3 When a type is not specified for SS 33 [230] and SS
6. General Requirements for Delivery
40 [275], Type 1 will be furnished (see 4.1);
6.1 Material furnished under this specification shall con-
5.1.3 Classification (either exposed, unexposed, temper
form to the applicable requirements of the current edition of
rolled, or annealed last) (see 4.3);
Specification A568/A568M unless otherwise provided herein.
5.1.4 Finish (see 9.1);
5.1.5 Oiled or not oiled, as required (see 9.1);
7. Chemical Composition
5.1.5.1 Unless otherwise specified, the sheet shall be oiled.
7.1 The heat analysis of the steel shall conform to the
5.1.5.2 When required, specify the sheet to be furnished not
chemical composition requirements of the appropriate desig-
oiled (dry).
nation shown in Table 1 for CS, and DS, and in Table 2 and
5.1.6 Dimensions (thickness, width, and whether cut lengths
Table 3 for SS and HSLAS.
or coils);
7.2 Each of the elements listed in Table 1, Table 2, and
NOTE 1—Not all producers are capable of meeting all the limitations
Table 3 shall be included in the report of the heat analysis.
of the thickness tolerance tables in Specification A568/A568M. The
purchaser should contact the producer regarding possible limitations prior
When the amount of copper, nickel, chromium, or molybde-
to placing an order.
num is less than 0.02 %, report the analysis as <0.02 % or the
5.1.7 Coil size (must include inside diameter, outside actual determined value. When the amount of vanadium,
diameter, and maximum weight); columbium, or titanium is less than 0.008 %, report the
5.1.8 Copper bearing steel (if required); analysis as <0.008 % or the actual determined value. When the
5.1.9 Quantity; amount of boron is less than 0.0005 %, report the analysis as
<0.0005 % or the actual determined value.
5.1.10 Application (part identification and description);
A
TABLE 1 Chemical Composition
For Cold Rolled Steel Sheet Designations CS and DS
% Heat Analysis, Element Maximum Unless Otherwise Shown
F B C
Designation C Mn P S Al Si Cu Ni Cr Mo V Cb Ti N B
CS 0.10 0.70 0.030 0.035 . . 0.50 0.20 0.15 0.06 0.008 0.008 0.025 . .
D, E
Type A
CS 0.02 to 0.60 0.030 0.035 . . 0.50 0.20 0.15 0.06 0.008 0.008 0.025 . .
D
Type B 0.15
CS 0.15 0.80 0.10 0.035 . . 0.50 0.30 0.30 0.15 0.008 0.008 0.025 . .
D,E
Type D
DS 0.02 to 0.50 0.020 0.030 . . 0.50 0.20 0.15 0.06 0.008 0.008 0.025 . .
Type B 0.15
DS 0.15 0.60 0.030 0.035 . . 0.50 0.30 0.30 0.15 0.008 0.008 0.025 . .
Type D
A
Where an ellipsis (. . .) appears in the table, there is no requirement, but the analysis result 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
For steels containing 0.02 % or more carbon, titanium is permitted at the producer’s option, to the lesser of 3.4N + 1.5S or 0.025 %.
D
When an aluminum deoxidized steel is required for the application, it is permissible to order Commercial Steel (CS) to a minimum of 0.01 % total aluminum.
E
Specify Type B to avoid carbon levels below 0.02 %.
F
F When copper steel is specified, a minimum of 0.20% is required. When copper steel is not specified, the copper limit is a maximum requirement.
A1083/A1083M − 12 (2017)
A
TABLE 2 Chemical Composition
For Cold Rolled Steel Sheet Designations SS and HSLAS
% Heat Analysis, Element Maximum Unless Otherwise Shown
Designation C Mn P S Al Si V Cb Ti N
B
SS:
Grade 25 [170] 0.20 0.60 0.035 0.035 . . 0.008 0.008 0.025 .
Grade 30 [205] 0.20 0.60 0.035 0.035 . . 0.008 0.008 0.025 .
Grade 33 [230] 0.20 0.60 0.035 0.035 . . 0.008 0.008 0.025 .
Type 1
Grade 33 [230] 0.15 0.60 0.20 0.035 . . 0.008 0.008 0.025 .
Type 2
Grade 40 [275] 0.20 1.35 0.035 0.035 . . 0.008 0.008 0.025 .
Type 1
Grade 40 [275] 0.15 0.60 0.20 0.035 . . 0.008 0.008 0.025 .
Type 2
Grade 45 [310] 0.20 1.35 0.070 0.025 0.08 0.60 0.08 0.08 0.025 0.030
Grade 50 [340] 0.20 1.35 0.035 0.035 . . 0.08 0.08 0.025 .
Grade 60 [410] 0.20 1.35 0.035 0.035 . . 0.08 0.08 0.025 .
Grade 70 [480] 0.20 1.35 0.035 0.035 . . 0.08 0.08 0.025 .
Grade 80 [550] 0.20 1.35 0.035 0.035 . . 0.08 0.08 0.025 .
C
HSLAS:
Grade 45 [310] .22 1.35 0.04 0.04 . . 0.005 0.005 0.005 .
Class 1 min min min
Grade 45 [310] 0.15 1.35 0.04 0.04 . . 0.005 0.005 0.005 .
Class 2 min min min
Grade 50 [340] 0.23 1.35 0.04 0.04 . . 0.005 0.005 0.005 .
Class 1 min min min
Grade 50 [340] 0.15 1.35 0.04 0.04 . . 0.005 0.005 0.005 .
Class 2 min min min
Grade 55 [380] 0.25 1.35 0.04 0.04 . . 0.005 0.005 0.005 .
Class 1 min min min
Grade 55 [380] 0.15 1.35 0.04 0.04 . . 0.005 0.005 0.005 .
Class 2 min min min
Grade 60 [410] 0.26 1.50 0.04 0.04 . . 0.005 0.005 0.005 .
Class 1 min min min
Grade 60 [410] 0.15 1.50 0.04 0.04 . . 0.005 0.005 0.005 .
Class 2 min min min
D
Grade 65 [480] 0.26 1.50 0.04 0.04 . . 0.005 0.005 0.005 .
Class 1 min min min
D
Grade 65 [450] 0.15 1.50 0.04 0.04 . . 0.005 0.005 0.005 .
Class 2 min min min
D
Grade 70 [480] 0.26 1.65 0.04 0.04 . . 0.005 0.005 0.005 .
Class 1 min min min
D
Grade 70 [550] 0.15 1.65 0.04 0.04 . . 0.005 0.005 0.005 .
Class 2 min min min
D
Grade 80 [550] 0.26 1.65 0.04 0.04 . . 0.005 0.005 0.005 .
Class 1 min min min
D
Grade 80 [550] 0.15 1.65 0.04 0.04 . . 0.005 0.005 0.005 .
Class 2 min min min
A
Where an ellipsis (. . .) appears in the table, there is no requirement but the analysis shall be reported.
B
Titanium is permitted for SS designations, at the producer’s option, to the lesser of 3.4N + 1.5S or 0.025 %.
C
HSLAS 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.
D
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 is permitted as a deliberate addition. Consideration should be made for the use of nitrogen binding elements (for example, vanadium, titanium).
7.3 Sheet steel grades defined by this specification are Test Methods and Definitions A370). The bend test is not a
suitable for welding if appropriate welding conditions are
requirement of delivery. However, if testing is performed by
selected. For certain welding processes, if more restrictive
the purchaser, material not conforming to the requirement shall
composition limits are desirable, they shall be specified at the
be subject to rejection.
time of inquiry and confirmed at the time of ordering.
8.1.3 Sheet of these designations are subject to aging
dependent upon processing factors such as the method of
8. Mechanical Properties
annealing (continuous annealing or box annealing), and chemi-
8.1 CS and DS:
cal composition. For additional information on aging, see
8.1.1 Typical nonmandatory mechanical properties for CS,
Appendix X1 of Specification A568/A568M.
and DS, are shown in Table 4.
8.2 SS and HSLAS:
8.1.2 The material shall be capable of being bent, at room
temperature, in any direction through 180° flat on itself without 8.2.1 The available strength grades for SS, and HSLAS are
cracking on the outside of the bent portion (see Section 14 of shown in Table 5.
A1083/A1083M − 12 (2017)
TABLE 3 Chemical Requirements: Cu, Ni, Cr, and Mo for
8.2.2.6 Tension test samples shall be taken with the length-
Structural Steels and High-Strength Low-Alloy Steels
wise axis of the test specimen parallel to the rolling direction
% Heat Analysis, Maximum Unless Otherwise Specified
(longitudinal test).
A,B B B,C B,C
Designation Limits Cu Ni Cr Mo
8.2.2.7 Test Method—Yield strength shall be determined by
SS:
All Grades L 0.35 0.20 0.15 0.06 either the 0.2 % offset method or the 0.5 % extension under
H 0.50 0.30 0.30 0.16
load method unless otherwise specified.
HSLAS:
All Grades L 0.35 0.20 0.15 0.06
8.3 Bending Properties:
and Classes
8.3.1 Suggested minimum inside radii for cold bending are
H 0.50 0.30 0.30 0.16
listed in Appendix X1 and are discussed in more detail in
A
When copper is specified, a minimum of 0.20 % is required. When copper steel
Specification A568/A568M (Section 6). Where a tighter bend
is not specified, the copper limit i
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: A1083/A1083M − 12 A1083/A1083M − 12 (Reapproved 2017)
Standard Specification for
Steel, Sheet, Cold-Rolled, Carbon, Structural, High-Strength
Low-Alloy, Produced by Twin-Roll Casting Process
This standard is issued under the fixed designation A1083/A1083M; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This specification covers cold-rolled, carbon, structural, and high-strength low-alloy, in coils and cut lengths produced by
the twin-roll casting process.
1.2 Cold rolled steel sheet produced by the twin-roll casting process is available in the designations as listed in 4.1.
1.3 This specification does not apply to steel strip as described in Specification A109/A109M.
1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each
system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the
two systems may result in non-conformance with the standard.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory
limitations prior to use.
1.6 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 ASTM Standards:
A109/A109M Specification for Steel, Strip, Carbon (0.25 Maximum Percent), Cold-Rolled
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
A568/A568M Specification for Steel, Sheet, Carbon, Structural, and High-Strength, Low-Alloy, Hot-Rolled and Cold-Rolled,
General Requirements for
A941 Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys
E18 Test Methods for Rockwell Hardness of Metallic Materials
E517 Test Method for Plastic Strain Ratio r for Sheet Metal
E646 Test Method for Tensile Strain-Hardening Exponents (n -Values) of Metallic Sheet Materials
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 For definitions of other terms used in this specification, refer to Terminology A941.
3.2 aging, n—loss of ductility with an increase in hardness, yield strength, and tensile strength that occurs when steel that has
been slightly cold worked (such as by temper rolling) is stored for some time.
This specification is under the jurisdiction of ASTM Committee A01 on Steel, Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee A01.19
on Steel Sheet and Strip.
Current edition approved Nov. 1, 2012Sept. 1, 2017. Published November 2012September 2017. Originally approved in 2012. Last previous edition approved in 2012 as
A1083/A1083M – 12. DOI: 10.1520/A1083_A1083M-12. 10.1520/A1083_A1083M-12R17.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 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 the ASTM website.
3.2.1 Discussion—
Aging increases the tendency of a steel to exhibit stretcher strains and fluting.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
A1083/A1083M − 12 (2017)
4. Classification
4.1 Cold-rolled steel sheet is available in the following designations:
4.1.1 Commercial Steel (CS Types A, B, and D).
4.1.2 Drawing Steel (DS Types B and D).
4.1.3 Structural Steel (SS grades 25[170], 30[205], 33[230] Types 1 and 2, 40[275] Types 1 and 2, 50[340], 60[410], 70[480],
and 80[550]).
4.1.4 High-Strength Low-Alloy Steel (HSLAS, in classes 1 and 2, in grades 45[310], 50[340]. 55[380], 60[410], 65[450],
70[480] and 80[550].
4.2 When required for HSLAS steels, limitations on the use of one or more of the microalloy elements, titanium, columbium,
vanadium, or molybdenum, shall be specified on the order.
4.3 Cold-rolled steel sheet is supplied for either exposed or unexposed applications. Within the latter category, cold-rolled sheet
is specified either “temper rolled” or “annealed last.” For details on processing, attributes and limitations, and inspection standards,
refer to Specification A568/A568M.
5. Ordering Information
5.1 It is the purchaser’s responsibility to specify in the purchase order all ordering information necessary to describe the
required material. Examples of such information include, but are not limited to, the following:
5.1.1 ASTM specification number and year of issue;
5.1.2 Name of material and designation (cold-rolled steel sheet) (include grade, type, and class, as appropriate, for CS, DS, SS,
HSLAS, (see 4.1);
5.1.2.1 When a type is not specified for CS or DS, Type D will be furnished (see 4.1);
5.1.2.2 When a class is not specified for HSLAS, Class 1 will be furnished (see 4.1);
5.1.2.3 When a type is not specified for SS 33 [230] and SS 40 [275], Type 1 will be furnished (see 4.1);
5.1.3 Classification (either exposed, unexposed, temper rolled, or annealed last) (see 4.3);
5.1.4 Finish (see 9.1);
5.1.5 Oiled or not oiled, as required (see 9.1);
5.1.5.1 Unless otherwise specified, the sheet shall be oiled.
5.1.5.2 When required, specify the sheet to be furnished not oiled (dry).
5.1.6 Dimensions (thickness, width, and whether cut lengths or coils);
NOTE 1—Not all producers are capable of meeting all the limitations of the thickness tolerance tables in Specification A568/A568M. The purchaser
should contact the producer regarding possible limitations prior to placing an order.
5.1.7 Coil size (must include inside diameter, outside diameter, and maximum weight);
5.1.8 Copper bearing steel (if required);
5.1.9 Quantity;
5.1.10 Application (part identification and description);
5.1.11 A report of heat analysis will be supplied, if requested, for CS, and DS. For materials with required mechanical
properties, SS, and HSLAS, a report is required of heat analysis and mechanical properties as determined by the tension test, and
5.1.12 Special requirements (if any).
5.1.12.1 When the purchaser requires thickness tolerances for 3/8 in. [10 mm] minimum edge distance (see Supplementary
Requirement in Specification A568/A568M), this requirement shall be specified in the purchase order or contract.
NOTE 2—A typical ordering description is as follows: ASTM A XXXX-XX, cold rolled steel sheet, CS Type A, exposed, matte finish, oiled, 0.035 by
30 in. by coil, ID 24 in., OD 48 in., max weight 15 000 lbs, 100 000 lb, for part No. 4560, Door Panel. Or ASTM A XXXXM-XX, cold-rolled steel sheet,
SS grade 275, unexposed, matte finish, oiled, 0.88 mm by 760 mm by 2440 mm, 10 000 kg, for shelf bracket.
6. General Requirements for Delivery
6.1 Material furnished under this specification shall conform to the applicable requirements of the current edition of
Specification A568/A568M unless otherwise provided herein.
7. Chemical Composition
7.1 The heat analysis of the steel shall conform to the chemical composition requirements of the appropriate designation shown
in Table 1 for CS, and DS, and in Table 2 and Table 3 for SS and HSLAS.
7.2 Each of the elements listed in Table 1, Table 2, and Table 3 shall be included in the report of the heat analysis. When the
amount of copper, nickel, chromium, or molybdenum is less than 0.02 %, report the analysis as <0.02 % or the actual determined
value. When the amount of vanadium, columbium, or titanium is less than 0.008 %, report the analysis as <0.008 % or the actual
determined value. When the amount of boron is less than 0.0005 %, report the analysis as <0.0005 % or the actual determined
value.
A1083/A1083M − 12 (2017)
A
TABLE 1 Chemical Composition
For Cold Rolled Steel Sheet Designations CS and DS
% Heat Analysis, Element Maximum Unless Otherwise Shown
F B C
Designation C Mn P S Al Si Cu Ni Cr Mo V Cb Ti N B
CS 0.10 0.70 0.030 0.035 . . 0.50 0.20 0.15 0.06 0.008 0.008 0.025 . .
D, E
Type A
CS 0.02 to 0.60 0.030 0.035 . . 0.50 0.20 0.15 0.06 0.008 0.008 0.025 . .
D
Type B 0.15
CS 0.15 0.80 0.10 0.035 . . 0.50 0.30 0.30 0.15 0.008 0.008 0.025 . .
D,E
Type D
DS 0.02 to 0.50 0.020 0.030 . . 0.50 0.20 0.15 0.06 0.008 0.008 0.025 . .
Type B 0.15
DS 0.15 0.60 0.030 0.035 . . 0.50 0.30 0.30 0.15 0.008 0.008 0.025 . .
Type D
A
Where an ellipsis (. . .) appears in the table, there is no requirement, but the analysis result 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
For steels containing 0.02 % or more carbon, titanium is permitted at the producer’s option, to the lesser of 3.4N + 1.5S or 0.025 %.
D
When an aluminum deoxidized steel is required for the application, it is permissible to order Commercial Steel (CS) to a minimum of 0.01 % total aluminum.
E
Specify Type B to avoid carbon levels below 0.02 %.
F
F When copper steel is specified, a minimum of 0.20% is required. When copper steel is not specified, the copper limit is a maximum requirement.
7.3 Sheet steel grades defined by this specification are suitable for welding if appropriate welding conditions are selected. For
certain welding processes, if more restrictive composition limits are desirable, they shall be specified at the time of inquiry and
confirmed at the time of ordering.
8. Mechanical Properties
8.1 CS and DS:
8.1.1 Typical nonmandatory mechanical properties for CS, and DS, are shown in Table 4.
8.1.2 The material shall be capable of being bent, at room temperature, in any direction through 180° flat on itself without
cracking on the outside of the bent portion (see Section 14 of Test Methods and Definitions A370). The bend test is not a
requirement of delivery. However, if testing is performed by the purchaser, material not conforming to the requirement shall be
subject to rejection.
8.1.3 Sheet of these designations are subject to aging dependent upon processing factors such as the method of annealing
(continuous annealing or box annealing), and chemical composition. For additional information on aging, see Appendix X1 of
Specification A568/A568M.
8.2 SS and HSLAS:
8.2.1 The available strength grades for SS, and HSLAS are shown in Table 5.
8.2.2 Tension Tests:
8.2.2.1 Requirements—Material as represented by the test specimen shall conform to the mechanical property requirements
specified in Table 4. These requirements do not apply to the uncropped ends of unprocessed coils.
8.2.2.2 Number of Tests—Two tension tests shall be made from each heat or from each 50 tons [45 000 kg]. When the amount
of finished material from a heat is less than 50 tons [45 000 kg], one test shall be made. When material rolled from heat differs
0.050 in. [1.27 mm] or more in thickness, one tension test shall be made from the thickest and thinnest material regardless of the
weight represented.
8.2.2.3 Tension test specimens shall be taken at a point immediately adjacent to the material to be qualified.
8.2.2.4 Tension test specimens shall be taken from the full thickness of the sheet.
8.2.2.5 Tension test specimens shall be taken from a location approximately halfway between the center of the sheet and the
edge of the material as rolled.
8.2.2.6 Tension test samples shall be taken with the lengthwise axis of the test specimen parallel to the rolling direction
(longitudinal test).
8.2.2.7 Test Method—Yield strength shall be determined by either the 0.2 % offset method or the 0.5 % extension under load
method unless otherwise specified.
8.3 Bending Properties:
8.3.1 Suggested minimum inside radii for cold bending are listed in Appendix X1 and are discussed in more detail in
Specification A568/A568M (Section 6). Where a tighter bend radius is required, where curved or offset bends are involved, or
where stretching or drawing are also a consideration, the producer shall be consulted.
9. Finish and Appearance
9.1 Surface Finish:
A1083/A1083M − 12 (2017)
A
TABLE 2 Chemical Composition
For Cold Rolled Steel Sheet Designations SS and HSLAS
% Heat Analysis, Element Maximum Unless Otherwise Shown
Designation C Mn P S Al Si V Cb Ti N
B
SS:
Grade 25 [170] 0.20 0.60 0.035 0.035 . . 0.008 0.008 0.025 .
Grade 30 [205] 0.20 0.60 0.035 0.035 . . 0.008 0.008 0.025 .
Grade 33 [230] 0.20 0.60 0.035 0.035 . . 0.008 0.008 0.025 .
Type 1
Grade 33 [230] 0.15 0.60 0.20 0.035 . . 0.008 0.008 0.025 .
Type 2
Grade 40 [275] 0.20 1.35 0.035 0.035 . . 0.008 0.008 0.025 .
Type 1
Grade 40 [275] 0.15 0.60 0.20 0.035 . . 0.008 0.008 0.025 .
Type 2
Grade 45 [310] 0.20 1.35 0.070 0.025 0.08 0.60 0.08 0.08 0.025 0.030
Grade 50 [340] 0.20 1.35 0.035 0.035 . . 0.08 0.08 0.025 .
Grade 60 [410] 0.20 1.35 0.035 0.035 . . 0.08 0.08 0.025 .
Grade 70 [480] 0.20 1.35 0.035 0.035 . . 0.08 0.08 0.025 .
Grade 80 [550] 0.20 1.35 0.035 0.035 . . 0.08 0.08 0.025 .
C
HSLAS:
Grade 45 [310] .22 1.35 0.04 0.04 . . 0.005 0.005 0.005 .
Class 1 min min min
Grade 45 [310] 0.15 1.35 0.04 0.04 . . 0.005 0.005 0.005 .
Class 2 min min min
Grade 50 [340] 0.23 1.35 0.04 0.04 . . 0.005 0.005 0.005 .
Class 1 min min min
Grade 50 [340] 0.15 1.35 0.04 0.04 . . 0.005 0.005 0.005 .
Class 2 min min min
Grade 55 [380] 0.25 1.35 0.04 0.04 . . 0.005 0.005 0.005 .
Class 1 min min min
Grade 55 [380] 0.15 1.35 0.04 0.04 . . 0.005 0.005 0.005 .
Class 2 min min min
Grade 60 [410] 0.26 1.50 0.04 0.04 . . 0.005 0.005 0.005 .
Class 1 min min min
Grade 60 [410] 0.15 1.50 0.04 0.04 . . 0.005 0.005 0.005 .
Class 2 min min min
D
Grade 65 [480] 0.26 1.50 0.04 0.04 . . 0.005 0.005 0.005 .
Class 1 min min min
D
Grade 65 [450] 0.15 1.50 0.04 0.04 . . 0.005 0.005 0.005 .
Class 2 min min min
D
Grade 70 [480] 0.26 1.65 0.04 0.04 . . 0.005 0.005 0.005 .
Class 1 min min min
D
Grade 70 [550] 0.15 1.65 0.04 0.04 . .
...
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