ASTM A1043/A1043M-05(2009)

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Designation:A1043/A1043M −05(Reapproved2009)
Standard Specification for
Structural Steel with Low Yield to Tensile Ratio for Use in
Buildings
This standard is issued under the fixed designation A1043/A1043M; 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 Structural Steel Bars, Plates, Shapes, and Sheet Piling
A370 Test Methods and Definitions for Mechanical Testing
1.1 This specification covers two grades, 36 [250] and 50
of Steel Products
[345] of rolled steel structural shapes and plates with low yield
A673/A673M Specification for Sampling Procedure for Im-
to tensile ratio for use in building framing or for general
pact Testing of Structural Steel
structural purposes.
A770/A770M Specification for Through-Thickness Tension
1.2 All shape profiles with a flange width of 6 in. [150 mm]
Testing of Steel Plates for Special Applications
and greater described in Specification A6/A6M Annex A2 and
plates up to and including 5 in. [125 mm] thick are included in
3. General Requirements for Delivery
this specification.
3.1 Product furnished under this specification shall conform
1.3 Supplementary requirements are provided for use where
to the requirements of the current edition of Specification
additional testing or additional restrictions are required by the
purchaser. Such requirements apply only when specified in the A6/A6M for the ordered product, unless a conflict exists, in
purchase order. which case this specification shall prevail.
1.4 When the steel is to be welded, a welding procedure
4. Materials and Manufacture
suitable for the grade of steel and intended use or service is to
be utilized. See Appendix X3 of Specification A6/A6M 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 %
1.5 The text of this specification contains notes or footnotes,
or more for the silicon content, a value of 0.015 % or more for
or both, that provide explanatory material; such notes and
the total aluminum content, or a value of 0.006 % or more for
footnotes, excluding those in tables and figures, do not contain
the titanium content.
any mandatory requirements.
5. Chemical Composition
1.6 The values stated in either inch-pound units or SI units
are to be regarded separately as standard. Within the text, the
5.1 The heat analysis shall conform to the requirements
SI units are shown in brackets. The values stated in each
given in Table 1.
system are not exact equivalents; therefore, each system is to
beusedindependentlyoftheotherwithoutcombiningvaluesin
5.2 The steel shall conform on product analysis to the
any way.
requirements given in Table 1, subject to the product analysis
tolerances in Specification A6/A6M.
2. Referenced Documents
2 5.3 The maximum permissible carbon equivalent values
2.1 ASTM Standards:
shall be:
A6/A6M Specification for General Requirements for Rolled
Thickness of Plate
Grade CE Value max %
and Shape Flange
36 [250] All 0.37
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
50 [345] # 2 in. [50 mm] 0.45
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
50 [345] > 2 in. [50 mm] 0.47
A01.02 on Structural Steel for Bridges, Buildings, Rolling Stock and Ships.
Current edition approved Oct. 1, 2009. Published December 2009. Originally
5.3.1 The carbon equivalent value shall be based upon heat
approved in 2005. Last previous edition approved in 2005 asA1043/A1043M – 05.
analysis. The required chemical analysis as well as the carbon
DOI: 10.1520/A1043_A1043M-05R09.
equivalent shall be reported. The carbon equivalent shall be
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
calculated using the following formula:
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. CE 5 C1 Mn /61 Cr1Mo1V /51 Ni1Cu /15 (1)
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A1043/A1043M−05(2009)
A
TABLE 1 Chemical Requirements (Heat Analysis) TABLE 2 Tensile Requirements
Grade
Composition, %
36 [250] 50 [345]
Element Grade Grade
Tensile strength, min, ksi [MPa] 58 [400] 65 [450]
36 [250] 50 [345]
Yield point, ksi [MPa] 36 to 52 50 to 65
Carbon, max 2 in. [50 mm] and less in thickness 0.20 0.20
[250 to 360] [345 to 450]
Over 2 in. [50 mm] in thickness 0.22 0.22
Yield to tensile ratio, max 0.80 0.80
Manganese 0.50–1.40 0.50–1.60
B
Elongation in 8 in. [200 mm], min % 20 18
Phosphorus, max 0.035 0.035
B
Elongation in 2 in. [50 mm], min % 23 21
Sulfur, max 0.045 0.045
A
Silicon, max 0.35 0.55 See Specimen Orientation under the Tension Tests section of Specification
A6/A6M.
...