ASTM A992/A992M-04a
(Specification)Standard Specification for Structural Steel Shapes
Standard Specification for Structural Steel Shapes
SCOPE
1.1 This specification covers rolled steel structural shapes for use in building framing or bridges, or for general structural purposes.
1.2 Supplementary requirements are provided for use where additional testing or additional restrictions are required by the purchaser. Such requirements apply only when specified in the purchase order.
1.3 When the steel is to be welded, a welding procedure suitable for the grade of steel and intended use or service is to be utilized. See Appendix X3 of Specification A 6/A 6M for information on weldability.
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 is to be used independently of the other without combining values in any way.
1.5 The text of this specification contains notes or footnotes, or both, that provide explanatory material; such notes and footnotes, excluding those in tables and figures, do not contain any mandatory requirements.
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Designation: A 992/A 992M – 04a
Standard Specification for
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Structural Steel Shapes
This standard is issued under the fixed designationA 992/A992M; 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 673/A 673M Specification for Sampling Procedure for
Impact Testing of Structural Steel
1.1 This specification covers rolled steel structural shapes
E 112 Test Methods for Determining Average Grain Size
for use in building framing or bridges, or for general structural
purposes.
3. General Requirements For Delivery
1.2 Supplementary requirements are provided for use where
3.1 Material furnished under this specification shall con-
additional testing or additional restrictions are required by the
form to the requirements of the current edition of Specification
purchaser. Such requirements apply only when specified in the
A 6/A 6M for the ordered material, unless a conflict exists, in
purchase order.
which case this specification shall prevail.
1.3 When the steel is to be welded, a welding procedure
suitable for the grade of steel and intended use or service is to
4. Materials and Manufacture
be utilized. See Appendix X3 of Specification A 6/A 6M for
4.1 The steel shall be killed, and such shall be affirmed in
information on weldability.
the test report by a statement of killed steel, a value of 0.10 %
1.4 The values stated in either inch-pound units or SI units
or more for the silicon content, or a value of 0.015 % or more
are to be regarded separately as standard. Within the text, the
for the total aluminum content.
SI units are shown in brackets. The values stated in each
4.2 The steelmaking practice used shall be one that pro-
system are not exact equivalents; therefore, each system is to
duces steel having a nitrogen content not greater than 0.015 %
beusedindependentlyoftheotherwithoutcombiningvaluesin
and includes the addition of one or more nitrogen-binding
any way.
elements, or one that produces steel having a nitrogen content
1.5 Thetextofthisspecificationcontainsnotesorfootnotes,
not greater than 0.012 % (with or without the addition of
or both, that provide explanatory material; such notes and
nitrogen-binding elements). The nitrogen content need not be
footnotes, excluding those in tables and figures, do not contain
reported, regardless of which steelmaking practice was used.
any mandatory requirements.
5. Chemical Composition
2. Referenced Documents
2 5.1 The heat analysis shall conform to the requirements in
2.1 ASTM Standards:
Table 1.
A 6/A 6M Specification for General Requirements for
5.2 In addition to the elements listed in Table 1, test reports
Rolled Structural Steel Bars, Plates, Shapes, and Sheet
shall include, for information, the chemical analysis for tin.
Piling
Where the amount of tin is less than 0.02 %, it shall be
A 370 Test Methods and Definitions for MechanicalTesting
permissible for the analysis to be reported as “< 0.02 %.”
of Steel Products
5.3 The steel shall conform on product analysis to the
requirements prescribed in Table 1, subject to the product
analysis tolerances in Specification A 6/A 6M.
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This specification is under the jurisdiction of ASTM Committee A01 on Steel, 5.4 Themaximumpermissiblecarbonequivalentvalueshall
Stainless Steel, and RelatedAlloys and is the direct responsibility of Subcommittee
be 0.47 % for shapes with flange thickness over 2 in. [50 mm],
A01.02 on Structural Steel for Bridges, Buildings, Rolling Stock, and Ships.
and 0.45 % in other shapes. The carbon equivalent value shall
Current edition approved Sept. 1, 2004. Published September 2004. Originally
be based on heat analysis. The required chemical analysis as
approved in 1998. Last previous edition approved in 2004 as A 992/A 992M – 04.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
well as the carbon equivalent shall be reported. The carbon
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
equivalent shall be calculated using the following formula:
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. CE 5 C1~Mn!/6 1~Cr 1 Mo 1 V!/51~Ni1 Cu!/15 (1)
*ASummary of Changes section appears at the end of this standard.
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A 992/A 992M – 04a
TABLE 1 Chemical Requirements (Heat Analysis)
6. Tensile Requirements
Element Composition, %
6.1 The material as represented by the test specimens shall
Carbon, max 0.23
conformtotherequirementsfortens
...
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