ASTM A1008/A1008M-05a
(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
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 – 05a
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* A 941 Terminology Relating to Steel, Stainless Steel, Re-
lated Alloys, and Ferroalloys
1.1 This specification covers cold-rolled, carbon, structural,
E18 Test Methods for Rockwell Hardness and Rockwell
high-strength low-alloy, high-strength low-alloy with im-
Superficial Hardness of Metallic Materials
proved formability, solution hardened, and bake hardenable
E 517 TestMethodforPlasticStrainRatiorforSheetMetal
steel sheet, in coils and cut lengths.
E 646 Test Method for Tensile Strain-Hardening Exponents
1.2 Cold rolled steel sheet is available in the designations as
(n-Values) of Metallic Sheet Materials
listed in 4.1.
1.3 This specification does not apply to steel strip as
3. Terminology
described in Specification A 109/A 109M.
3.1 Definitions:
1.4 The values stated in either inch-pound units or SI units
3.1.1 For definitions of other terms used in this specifica-
are to be regarded separately as standard. Within the text, the
tion, refer to Terminology A 941.
SI units are shown in brackets. The values stated in each
3.1.2 stabilization—addition of one or more nitride- or
system are not exact equivalents; therefore, each system must
carbide-forming elements, or both, such as titanium and
be used independently of the other.
columbium, to control the level of the interstitial elements of
2. Referenced Documents carbon and nitrogen in the steel.
2
3.1.2.1 Discussion—Stabilizing improves formability and
2.1 ASTM Standards:
increases resistance to aging.
A 109/A 109M Specification for Steel, Strip, Carbon (0.25
3.1.3 vacuum degassing—process of refining liquid steel in
Maximum Percent), Cold Rolled
which the liquid is exposed to a vacuum as part of a special
A 366/A 366M Specification for Commercial Steel (CS),
3
technique for removing impurities or for decarburizing the
Sheet, Carbon (0.15 Maximum Percentage), Cold-Rolled
steel.
A 370 Test Methods and Definitions for MechanicalTesting
3.2 Definitions of Terms Specific to This Standard:
of Steel Products
3.2.1 aging—loss of ductility with an increase in hardness,
A 568/A 568M Specification for Steel, Sheet, Carbon, and
yield strength, and tensile strength that occurs when steel that
High-Strength, Low-Alloy, Hot-Rolled and Cold-Rolled,
has been slightly cold worked (such as by temper rolling) is
General Requirements for
stored for some time.
A 620/A 620M Specification for Drawing Steel (DS),
3 3.2.1.1 Discussion—Aging increases the tendency of a steel
Sheet, Carbon, Cold-Rolled
to exhibit stretcher strains and fluting.
3.2.2 bake hardenable steel—steel in which significant
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
aging is realized when moderate heat treatment, such as that
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
used for paint baking, follows straining or cold working.
A01.19 on Steel Sheet and Strip.
3.2.3 solid-solution hardened steel or solution hardened
Current edition approved Sept. 15, 2005. Published September 2005. Originally
steel—steel strengthened through additions of elements, such
approvedin2000.Lastpreviouseditionapprovedin2005asA 1008/A 1008M – 05.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
as Mn, P, or Si, that can be dissolved within the crystalline
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
structure of steels.
Standards volume information, refer to the standard’s Document Summary page on
3.2.3.1 Discussion—Alloying elements that form a solid-
the ASTM website.
3
Withdrawn. solution with iron provide strengthening as a result of local
*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 – 05a
distortions in atomic arrangements, which arise as a result of 5.1.5 Oiled or not oiled, as required (see 9.2);
the mismatch between the atomic sizes of such elements and 5.1.6 Dimensions (thickness, thickness tolerance table (see
that of iron. 5.1.6.1), width, and whether cut lengths or coils);
5.1.6.1 As agreed upon between the purchaser and the
4. Classification
producer,
...
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–05 Designation: A 1008/A 1008M – 05a
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 Percentage), Cold-Rolled
A 370 Test Methods and Definitions for Mechanical Testing of Steel Products
A 568/A 568M Specification for Steel, Sheet, Carbon, and High-Strength, Low-Alloy, Hot-Rolled and Cold-Rolled, General
Requirements for
3
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 and Rockwell Superficial 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:
3.1.1 For definitions of other terms used in this specification, refer to Terminology A 941.
3.1.2 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.
3.1.2.1 Discussion—Stabilizing improves formability and increases resistance to aging.
3.1.3 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 decarburizing the steel.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 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.
3.2.1.1 Discussion—Aging increases the tendency of a steel to exhibit stretcher strains and fluting.
3.2.2 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.
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 May 1,Sept. 15, 2005. Published MaySeptember 2005. Originally approved in 2000. Last previous edition approved in 20042005as
A 1008/A 1008M – 04b5.
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 – 05a
3.2.3 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.
3.2.3.1 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 mismatc
...
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