ASTM A709/A709M-06a
(Specification)Standard Specification for Structural Steel for Bridges
Standard Specification for Structural Steel for Bridges
SCOPE
1.1 This specification covers carbon and high-strength low-alloy steel structural shapes, plates, and bars and quenched and tempered alloy steel for structural plates intended for use in bridges. Nine grades are available in four yield strength levels as follows:
1.1.1 Grades 36 [250], 50 [345], 50S [345S], 50W [345W], 100 [690], and 100W [690W] are also included in Specifications A 36/A 36M, A 572/A 572M, A 992/A 992M, A 588/A 588M, and A 514/A 514M, respectively. When the supplementary requirements of this specification are specified, they exceed the requirements of Specifications A 36/A 36M, A 572/A 572M, A 992/A 992M, A 588/A 588M, and A 514/A 514M.
1.1.2 Grades 50W [345W], HPS 50W [HPS 345W], HPS 70W [HPS 485W], 100W [690W], and HPS 100W [HPS 690W] have enhanced atmospheric corrosion resistance (see ). Product availability is shown in .
1.2 Grade HPS 70W [HPS 485W], 100 [690], 100W [690W], or HPS 100W [HPS 690W] shall not be substituted for Grades 36 [250], 50 [345], 50S [345S], 50W [345W], or HPS 50W [HPS 345W]. Grade 50W [345W], or HPS 50W [HPS 345W] shall not be substituted for Grades 36 [250], 50 [345] or 50S [345S] without agreement between the purchaser and the supplier.
1.3 When the steel is to be welded, it is presupposed that a welding procedure suitable for the grade of steel and intended use or service will be utilized. See Appendix X3 of Specification A 6/A 6M for information on weldability.
1.4 For structural products to be used as tension components requiring notch toughness testing, standardized requirements are provided in this standard, and they are based upon American Association of State Highway and Transportation Officials (AASHTO) requirements for both fracture critical and non-fracture critical members.
1.5 Supplementary requirements are available but shall apply only if specified in the purchase order.
1.6 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.
1.7 For structural products produced from coil and furnished without heat treatment or with stress relieving only, the additional requirements, including additional testing requirements and the reporting of additional test results, of Specification A 6/A 6M apply.
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Designation: A 709/A 709M – 06a
Standard Specification for
1
Structural Steel for Bridges
This standard is issued under the fixed designationA709/A709M; 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* 1.4 Forstructuralproductstobeusedastensioncomponents
requiring notch toughness testing, standardized requirements
1.1 This specification covers carbon and high-strength low-
are provided in this standard, and they are based upon
alloy steel structural shapes, plates, and bars and quenched and
American Association of State Highway and Transportation
tempered alloy steel for structural plates intended for use in
Officials(AASHTO)requirementsforbothfracturecriticaland
bridges. Nine grades are available in four yield strength levels
non-fracture critical members.
as follows:
1.5 Supplementary requirements are available but shall
Grade U.S. [SI] Yield Strength, ksi [MPa]
apply only if specified in the purchase order.
36 [250] 36 [250]
1.6 The values stated in either inch-pound units or SI units
50 [345] 50 [345]
50S [345S] 50 [345] are to be regarded separately as standard. Within the text, the
50W [345W] 50 [345]
SI units are shown in brackets. The values stated in each
HPS 50W [HPS 345W] 50 [345]
system are not exact equivalents; therefore, each system is to
HPS 70W [HPS 485W] 70 [485]
100 [690] 100 [690]
be used independently of the other, without combining values
100W [690W] 100 [690]
in any way.
HPS 100W [HPS 690W] 100 [690]
1.7 For structural products produced from coil and fur-
1.1.1 Grades 36 [250], 50 [345], 50S [345S], 50W [345W],
nished without heat treatment or with stress relieving only, the
100 [690], and 100W [690W] are also included in Specifica-
additional requirements, including additional testing require-
tions A 36/A 36M, A 572/A 572M, A 992/A 992M, A 588/A
ments and the reporting of additional test results, of Specifi-
588M, andA 514/A514M, respectively. When the supplemen-
cation A 6/A 6M apply.
tary requirements of this specification are specified, they
2. Referenced Documents
exceed the requirements of Specifications A 36/A 36M,
2
A 572/A 572M, A 992/A 992M, A 588/A 588M, and A 514/A
2.1 ASTM Standards:
514M.
A6/A 6M Specification for General Requirements for
1.1.2 Grades 50W [345W], HPS 50W [HPS 345W], HPS
Rolled Structural Steel Bars, Plates, Shapes, and Sheet
70W [HPS 485W], 100W [690W], and HPS 100W [HPS
Piling
690W] have enhanced atmospheric corrosion resistance (see
A 36/A 36M Specification for Carbon Structural Steel
14.1.2). Product availability is shown in Table 1.
A 370 Test Methods and Definitions for MechanicalTesting
1.2 Grade HPS 70W [HPS 485W], 100 [690], 100W
of Steel Products
[690W], or HPS 100W [HPS 690W] shall not be substituted
A 514/A 514M Specification for High-Yield-Strength,
for Grades 36 [250], 50 [345], 50S [345S], 50W [345W], or
Quenched and Tempered Alloy Steel Plate, Suitable for
HPS 50W [HPS 345W]. Grade 50W [345W], or HPS 50W
Welding
[HPS 345W] shall not be substituted for Grades 36 [250], 50
A 572/A 572M Specification for High-Strength Low-Alloy
[345] or 50S [345S] without agreement between the purchaser
Columbium-Vanadium Structural Steel
and the supplier.
A 588/A 588M Specification for High-Strength Low-Alloy
1.3 When the steel is to be welded, it is presupposed that a
Structural Steel with 50 ksi [345 MPa] Minimum Yield
welding procedure suitable for the grade of steel and intended
Point to 4 in. [100 mm] Thick
use or service will be utilized. See Appendix X3 of Specifica-
A 673/A 673M Specification for Sampling Procedure for
tion A 6/A 6M for information on weldability.
Impact Testing of Structural Steel
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This specification is under the jurisdiction of ASTM Committee A01 on Steel,
2
Stainless Steel, and RelatedAlloys and is the direct responsibility of Subcommittee
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
A01.02 on Structural Steel for Bridges, Buildings, Rolling Stock, and Ships. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Current edition approved Sept. 1, 2006. Published September 2006. Originally Standards volume information, refer to the standard’s Document Summary page on
approved in 1974. Last previous edition approved in 2006 as A 709/A 709M– 06. the ASTM website.
*ASummary 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.
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A 709/A 709M – 06a
A
TABLE 1 Tensile and Hardness Requirements
NOTE 1— Where “. . .”
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