ASTM A1008/A1008M-07a
(Specification)Standard Specification for Steel, Sheet, Cold-Rolled, Carbon, Structural, High-Strength Low-Alloy, High-Strength Low-Alloy with Improved Formability, Solution Hardened, and Bake Hardenable
Standard Specification for Steel, Sheet, Cold-Rolled, Carbon, Structural, High-Strength Low-Alloy, High-Strength Low-Alloy with Improved Formability, Solution Hardened, and Bake Hardenable
ABSTRACT
This specification covers cold-rolled, carbon steel sheets, in coils and cut lengths, in the following designations: commercial steels (CS Types A, B, and C); drawing steel (DS Types A and B); deep drawing steel (DDS); extra deep drawing steel (EDDS); 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]); high-strength low-alloy steel (HSLAS Classes 1 and 2 of Grades 45[310], 50[340]. 55[380], 60[410], 65[450], and 70[480]), high-strength low-alloy steel with improved formability (HSLAS-F Grades 50[340], 60[410], 70[480], and 80[550]); solution hardened steel (SHS); and bake hardenable steel (BHS). Conformance of the steel sheets to chemical composition requirements shall be tested by heat analysis. Specimens shall also undergo tension and bending tests and shall conform to specified values of tensile and yield strength, elongation, and bake hardening index. Unless otherwise indicated, sheet surfaces shall have a matte finish and shall be oiled.
SCOPE
1.1 This specification covers cold-rolled, carbon, structural, high-strength low-alloy, high-strength low-alloy with improved formability, solution hardened, and bake hardenable steel sheet, in coils and cut lengths.
1.2 Cold rolled steel sheet is available in the designations as listed in .
1.3 This specification does not apply to steel strip as described in Specification A 109/A 109M.
1.4 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other.
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Designation: A 1008/A 1008M – 07a
Standard Specification for
Steel, Sheet, Cold-Rolled, Carbon, Structural, High-Strength
Low-Alloy, High-Strength Low-Alloy with Improved
1
Formability, Solution Hardened, and Bake Hardenable
This standard is issued under the fixed designation A 1008/A 1008M; 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* E 517 TestMethodforPlasticStrainRatio rforSheetMetal
E 646 Test Method for Tensile Strain-Hardening Exponents
1.1 This specification covers cold-rolled, carbon, structural,
(n -Values) of Metallic Sheet Materials
high-strength low-alloy, high-strength low-alloy with im-
proved formability, solution hardened, and bake hardenable
3. Terminology
steel sheet, in coils and cut lengths.
3.1 Definitions of Terms Specific to This Standard:
1.2 Cold rolled steel sheet is available in the designations as
3.1.1 For definitions of other terms used in this specifica-
listed in 4.1.
tion, refer to Terminology A 941.
1.3 This specification does not apply to steel strip as
3.1.2 aging—loss of ductility with an increase in hardness,
described in Specification A 109/A 109M.
yield strength, and tensile strength that occurs when steel that
1.4 The values stated in either inch-pound units or SI units
has been slightly cold worked (such as by temper rolling) is
are to be regarded separately as standard. Within the text, the
stored for some time.
SI units are shown in brackets. The values stated in each
3.1.2.1 Discussion—Aging increases the tendency of a steel
system are not exact equivalents; therefore, each system must
to exhibit stretcher strains and fluting.
be used independently of the other.
3.1.3 bake hardenable steel—steel in which significant
2. Referenced Documents aging is realized when moderate heat treatment, such as that
2
used for paint baking, follows straining or cold working.
2.1 ASTM Standards:
3.1.4 solid-solution hardened steel or solution hardened
A 109/A 109M Specification for Steel, Strip, Carbon (0.25
steel—steel strengthened through additions of elements, such
Maximum Percent), Cold-Rolled
as Mn, P, or Si, that can be dissolved within the crystalline
A 366/A 366M Specification for Commercial Steel (CS)
3
structure of steels.
Sheet, Carbon (0.15 Maximum Percent) Cold-Rolled
3.1.4.1 Discussion—Alloying elements that form a solid-
A 370 Test Methods and Definitions for MechanicalTesting
solution with iron provide strengthening as a result of local
of Steel Products
distortions in atomic arrangements, which arise as a result of
A 568/A 568M Specification for Steel, Sheet, Carbon,
the mismatch between the atomic sizes of such elements and
Structural, and High-Strength, Low-Alloy, Hot-Rolled and
that of iron.
Cold-Rolled, General Requirements for
3.1.5 stabilization—addition of one or more nitride- or
A 620/A 620M Specification for Drawing Steel (DS),
3
carbide-forming elements, or both, such as titanium and
Sheet, Carbon, Cold-Rolled
columbium, to control the level of the interstitial elements of
A 941 Terminology Relating to Steel, Stainless Steel, Re-
carbon and nitrogen in the steel.
lated Alloys, and Ferroalloys
3.1.5.1 Discussion—Stabilizing improves formability and
E18 Test Methods for Rockwell Hardness of Metallic
increases resistance to aging.
Materials
3.1.6 vacuum degassing—process of refining liquid steel in
which the liquid is exposed to a vacuum as part of a special
1
This specification is under the jurisdiction ofASTM CommitteeA01 on Steel,
technique for removing impurities or for decarburizing the
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
steel.
A01.19 on Steel Sheet and Strip.
Current edition approved Sept. 1, 2007. Published September 2007. Originally
4. Classification
approvedin2000.Lastpreviouseditionapprovedin2007asA 1008/A 1008M – 07.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
4.1 Cold-rolled steel sheet is available in the following
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
designations:
Standards volume information, refer to the standard’s Document Summary page on
4.1.1 Commercial Steel (CS Types A, B, and C),
the ASTM website.
3
Withdrawn. 4.1.2 Drawing Steel (DS Types A and B),
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
A 1008/A 1008M – 07a
NOTE 1—CS Type B and DS Type B describe the most common NOTE 2—Not all producers are capable of meeting all
...
This document is not anASTM standard and is intended only to provide the user of anASTM 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:A1008/A1008M–07 Designation: A 1008/A 1008M – 07a
Standard Specification for
Steel, Sheet, Cold-Rolled, Carbon, Structural, High-Strength
Low-Alloy, High-Strength Low-Alloy with Improved
1
Formability, Solution Hardened, and Bake Hardenable
This standard is issued under the fixed designation A 1008/A 1008M; 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, high-strength low-alloy, high-strength low-alloy with improved
formability, solution hardened, and bake hardenable steel sheet, in coils and cut lengths.
1.2 Cold rolled steel sheet is available in the designations as listed in 4.1.
1.3 This specification does not apply to steel strip as described in Specification A 109/A 109M.
1.4 Thevaluesstatedineitherinch-poundunitsorSIunitsaretoberegardedseparatelyasstandard.Withinthetext,theSIunits
are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used
independently of the other.
2. Referenced Documents
2
2.1 ASTM Standards:
A 109/A 109M Specification for Steel, Strip, Carbon (0.25 Maximum Percent), Cold-Rolled
3
A 366/A 366M Specification for Commercial Steel (CS) Sheet, Carbon (0.15 Maximum Percent) Cold-Rolled
A 370 Test Methods and Definitions for Mechanical Testing of Steel Products
A 568/A 568M Specification for Steel, Sheet, Carbon, Structural, and High-Strength, Low-Alloy, Hot-Rolled and Cold-Rolled,
General Requirements for
0
A 620/A 620M Specification for Drawing Steel (DS), Sheet, Carbon, Cold-Rolled
A 941 Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys
E 18 Test Methods for Rockwell Hardness of Metallic Materials
E 517 Test Method for Plastic Strain Ratio r for Sheet Metal
E 646 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 A 941.
3.1.2 aging—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.
3.1.2.1 Discussion—Aging increases the tendency of a steel to exhibit stretcher strains and fluting.
3.1.3 bake hardenable steel—steel in which significant aging is realized when moderate heat treatment, such as that used for
paint baking, follows straining or cold working.
3.1.4 solid-solution hardened steel or solution hardened steel—steel strengthened through additions of elements, such as Mn,
P, or Si, that can be dissolved within the crystalline structure of steels.
3.1.4.1 Discussion—Alloying elements that form a solid-solution with iron provide strengthening as a result of local distortions
in atomic arrangements, which arise as a result of the mismatch between the atomic sizes of such elements and that of iron.
3.1.5 stabilization—addition of one or more nitride- or carbide-forming elements, or both, such as titanium and columbium, to
control the level of the interstitial elements of carbon and nitrogen in the steel.
1
This specification is under the jurisdiction ofASTM CommitteeA01 on Steel, Stainless Steel and RelatedAlloys and is the direct responsibility of SubcommitteeA01.19
on Steel Sheet and Strip.
Current edition approved Feb.Sept. 1, 2007. Published FebruarySeptember 2007. Originally approved in 2000. Last previous edition approved in 20062007 as
A 1008/A 1008M – 06a7.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM 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
Withdrawn.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
A 1008/A 1008M – 07a
3.1.5.1 Discussion—Stabilizing improves formability and increases resistance to aging.
3.1.6 vacuum degassing—process of refining liquid steel in which the liquid is exposed to a vacuum as part of a special
technique for removing impurities or for
...
This document is not anASTM standard and is intended only to provide the user of anASTM 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:A1008/A1008M–07 Designation: A 1008/A 1008M – 07a
Standard Specification for
Steel, Sheet, Cold-Rolled, Carbon, Structural, High-Strength
Low-Alloy, High-Strength Low-Alloy with Improved
1
Formability, Solution Hardened, and Bake Hardenable
This standard is issued under the fixed designation A 1008/A 1008M; 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, high-strength low-alloy, high-strength low-alloy with improved
formability, solution hardened, and bake hardenable steel sheet, in coils and cut lengths.
1.2 Cold rolled steel sheet is available in the designations as listed in 4.1.
1.3 This specification does not apply to steel strip as described in Specification A 109/A 109M.
1.4 Thevaluesstatedineitherinch-poundunitsorSIunitsaretoberegardedseparatelyasstandard.Withinthetext,theSIunits
are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used
independently of the other.
2. Referenced Documents
2
2.1 ASTM Standards:
A 109/A 109M Specification for Steel, Strip, Carbon (0.25 Maximum Percent), Cold-Rolled
3
A 366/A 366M Specification for Commercial Steel (CS) Sheet, Carbon (0.15 Maximum Percent) Cold-Rolled
A 370 Test Methods and Definitions for Mechanical Testing of Steel Products
A 568/A 568M Specification for Steel, Sheet, Carbon, Structural, and High-Strength, Low-Alloy, Hot-Rolled and Cold-Rolled,
General Requirements for
0
A 620/A 620M Specification for Drawing Steel (DS), Sheet, Carbon, Cold-Rolled
A 941 Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys
E18 Test Methods for Rockwell Hardness of Metallic Materials
E 517 Test Method for Plastic Strain Ratio r for Sheet Metal
E 646 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 A 941.
3.1.2 aging—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.
3.1.2.1 Discussion—Aging increases the tendency of a steel to exhibit stretcher strains and fluting.
3.1.3 bake hardenable steel—steel in which significant aging is realized when moderate heat treatment, such as that used for
paint baking, follows straining or cold working.
3.1.4 solid-solution hardened steel or solution hardened steel—steel strengthened through additions of elements, such as Mn,
P, or Si, that can be dissolved within the crystalline structure of steels.
3.1.4.1 Discussion—Alloying elements that form a solid-solution with iron provide strengthening as a result of local distortions
in atomic arrangements, which arise as a result of the mismatch between the atomic sizes of such elements and that of iron.
3.1.5 stabilization—addition of one or more nitride- or carbide-forming elements, or both, such as titanium and columbium, to
control the level of the interstitial elements of carbon and nitrogen in the steel.
1
This specification is under the jurisdiction ofASTM CommitteeA01 on Steel, Stainless Steel and RelatedAlloys and is the direct responsibility of SubcommitteeA01.19
on Steel Sheet and Strip.
Current edition approved Feb.Sept. 1, 2007. Published FebruarySeptember 2007. Originally approved in 2000. Last previous edition approved in 20062007 as
A 1008/A 1008M – 06a7.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM 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
Withdrawn.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
A 1008/A 1008M – 07a
3.1.5.1 Discussion—Stabilizing improves formability and increases resistance to aging.
3.1.6 vacuum degassing—process of refining liquid steel in which the liquid is exposed to a vacuum as part of a special
technique for removing impurities or for d
...
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