ASTM A709/A709M-17
(Specification)Standard Specification for Structural Steel for Bridges
Standard Specification for Structural Steel for Bridges
ABSTRACT
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. Heat analysis shall be used to determine the percentage of carbon, manganese, phosphorus, sulfur, silicon, and copper for the required chemical composition. A tension test shall be used to determine the required tensile properties such as tensile strength, yield strength, and elongation. Materials shall undergo: (1) an impact test for non-fracture critical and fracture critical members; and (2) a Brinell hardness test for Grades 100 and 100W. Atmospheric corrosion resistance shall also be determined.
SCOPE
1.1 This specification covers carbon and high-strength low-alloy steel structural shapes, plates, and bars, quenched and tempered alloy steel, and stainless steel for structural plates intended for use in bridges. Eight grades are available in four yield strength levels as follows:
Grade U.S. [SI]
Yield Strength, ksi [MPa]
36 [250]
36 [250]
50 [345]
50 [345]
50S [345S]
50 [345]
50W [345W]
50 [345]
HPS 50W [HPS 345W]
50 [345]
50CR [345CR]
50 [345]
HPS 70W [HPS 485W]
70 [485]
HPS 100W [HPS 690W]
100 [690]
1.1.1 Grades 36 [250], 50 [345], 50S [345S], 50W [345W], and 50CR [345CR] are also included in Specifications A36/A36M, A572/A572M, A992/A992M, A588/A588M, and A1010/A1010M (UNS S41003), respectively. When the requirements of Table 10 or Table 11 or the supplementary requirements of this specification are specified, they exceed the requirements of Specifications A36/A36M, A572/A572M, A992/A992M, A588/A588M, and A1010/A1010M (UNS S41003). Product availability is shown in Table 1.
TABLE 1 Tensile and Hardness RequirementsA
Note 1: Where “. . .” appears in this table, there is no requirement.
Grade
Plate Thickness, in. [mm]
Structural Shape Flange or Leg Thickness, in. [mm]
Yield Point or Yield Strength,B ksi [MPa]
Tensile Strength, ksi [MPa]
Minimum Elongation, %
Reduction of AreaC,Dmin, %
Plates and BarsC, E
ShapesE
8 in. or 200 mm
2 in. or 50 mm
8 in. or 200 mm
2 in. or 50 mm
36 [250]
to 4 [100], incl
to 3 in. [75 mm], incl
36 [250] min
58–80 [400–550]
20
23
20
21
...
over 3 in. [75 mm]
36 [250] min
58 [400] min
...
...
20
19
...
50 [345]
to 4 [100], incl
all
50 [345] min
65 [450] min
18
21
18
21F
...
50S [345S]
G
all
50–65
[345–450]H,I
65 [450]H min
...
...
18
21
...
50W [345W]
and
HPS 50W
[HPS 345W]
to 4 [100], incl
all
50 [345] min
70 [485] min
18
21
18
21J
...
50CR [345CR]
to 2 [50], incl
G
50 [345] min
70 [485] min
18
21
...
...
...
HPS 70W
[HPS 485 W]
to 4 [100], incl
G
70 [485] minB
85–110 [585–760]
...
19K
...
...
...
HPS 100W
[HPS 690W]
to 21/2 [65], incl
G
100 [690] minB
110–130 [760–895]
...
18K
...
...
L
over 21/2 to 4
[65 to 100], inclM
G
90 [620] minB
100–130 [690–895]
...
16K
...
...
L(A) See specimen orientation and preparation subsection in the Tension Tests section of Specification A6/A6M.(B) Measured at 0.2 % offset or 0.5 % extension under load as described in Section 13 of Test Methods A370.(C) Elongation and reduction of area not required to be determined for floor plates.(D) For plates wider than 24 in. [600 mm], the...
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Designation:A709/A709M −17
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 (´) 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, quenched and
American Association of State Highway and Transportation
tempered alloy steel, and stainless steel for structural plates
Officials(AASHTO)requirementsforbothfracturecriticaland
intended for use in bridges. Eight grades are available in four
non-fracture critical members.
yield strength levels as follows:
1.5 Supplementary requirements are available but shall
Grade U.S. [SI] Yield Strength, ksi [MPa]
36 [250] 36 [250]
apply only if specified in the purchase order.
50 [345] 50 [345]
1.6 The values stated in either SI units or inch-pound units
50S [345S] 50 [345]
50W [345W] 50 [345]
are to be regarded separately as standard. The values stated in
HPS 50W [HPS 345W] 50 [345]
each system may not be exact equivalents; therefore, each
50CR [345CR] 50 [345]
system shall be used independently of the other. Combining
HPS 70W [HPS 485W] 70 [485]
HPS 100W [HPS 690W] 100 [690]
values from the two systems may result in non-conformance
1.1.1 Grades 36 [250], 50 [345], 50S [345S], 50W [345W], with the standard.
and 50CR [345CR] are also included in Specifications A36/
1.7 For structural products produced from coil and fur-
A36M, A572/A572M, A992/A992M, A588/A588M, and
nished without heat treatment or with stress relieving only, the
A1010/A1010M (UNS S41003), respectively. When the re-
additional requirements, including additional testing require-
quirements of Table 10 or Table 11 or the supplementary
ments and the reporting of additional test results, of Specifi-
requirements of this specification are specified, they exceed the
cation A6/A6M apply.
requirements of Specifications A36/A36M, A572/A572M,
1.8 This international standard was developed in accor-
A992/A992M, A588/A588M, and A1010/A1010M (UNS
dance with internationally recognized principles on standard-
S41003). Product availability is shown in Table 1.
ization established in the Decision on Principles for the
1.1.2 Grades50W[345W],50CR[345CR],HPS50W[HPS
Development of International Standards, Guides and Recom-
345W], HPS 70W [HPS 485W], and HPS 100W [HPS 690W]
mendations issued by the World Trade Organization Technical
have enhanced atmospheric corrosion resistance (see 13.1.2).
Barriers to Trade (TBT) Committee.
Product availability is shown in Table 1.
1.2 Grade HPS 70W [HPS 485W] or HPS 100W [HPS
2. Referenced Documents
690W] shall not be substituted for Grades 36 [250], 50 [345], 2
2.1 ASTM Standards:
50S [345S], 50W [345W], or HPS 50W [HPS 345W]. Grade
A6/A6M Specification for General Requirements for Rolled
50W [345W], or HPS 50W [HPS 345W] shall not be substi-
Structural Steel Bars, Plates, Shapes, and Sheet Piling
tuted for Grades 36 [250], 50 [345] or 50S [345S] without
A36/A36M Specification for Carbon Structural Steel
agreement between the purchaser and the supplier.
A370 Test Methods and Definitions for Mechanical Testing
1.3 When the steel is to be welded, it is presupposed that a of Steel Products
welding procedure suitable for the grade of steel and intended A572/A572M Specification for High-Strength Low-Alloy
use or service will be utilized. See Appendix X3 of Specifica- Columbium-Vanadium Structural Steel
tion A6/A6M for information on weldability. A588/A588M Specification for High-Strength Low-Alloy
Structural Steel, up to 50 ksi [345 MPa] Minimum Yield
Point, with Atmospheric Corrosion Resistance
1
This specification is under the jurisdiction ofASTM Committee A01 on Steel,
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
2
A01.02 on Structural Steel for Bridges, Buildings, Rolling Stock and Ships. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Sept. 1, 2017. Published September 2017. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1974. Last previous edition approved in 2016 as A709/A709M – 16a. Standards volume information, refer to the standard’s Document Summary page on
DOI: 10.1520/A0709_A0709M-17. the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM 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: A709/A709M − 16a A709/A709M − 17
Standard Specification for
1
Structural Steel for Bridges
This standard is issued under the fixed designation A709/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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope*
1.1 This specification covers carbon and high-strength low-alloy steel structural shapes, plates, and bars and bars, quenched and
tempered alloy steel, and stainless steel for structural plates intended for use in bridges. SevenEight grades are available in four
yield strength levels as follows:
Grade U.S. [SI] Yield Strength, ksi [MPa]
36 [250] 36 [250]
50 [345] 50 [345]
50S [345S] 50 [345]
50W [345W] 50 [345]
HPS 50W [HPS 345W] 50 [345]
50CR [345CR] 50 [345]
HPS 70W [HPS 485W] 70 [485]
HPS 100W [HPS 690W] 100 [690]
1.1.1 Grades 36 [250], 50 [345], 50S [345S], and 50W [345W]50W [345W], and 50CR [345CR] are also included in
Specifications A36/A36M, A572/A572M, A992/A992M, and A588/A588M, and A1010/A1010M (UNS S41003), respectively.
When the requirements of Table 910 or Table 1011 or the supplementary requirements of this specification are specified, they
exceed the requirements of Specifications A36/A36M, A572/A572M, A992/A992M, A588/A588Mand , and A588/A588MA1010/
A1010M (UNS S41003). Product availability is shown in Table 1.
1.1.2 Grades 50W [345W], 50CR [345CR], HPS 50W [HPS 345W], HPS 70W [HPS 485W], and HPS 100W [HPS 690W] have
enhanced atmospheric corrosion resistance (see 13.1.2). Product availability is shown in Table 1.
1.2 Grade HPS 70W [HPS 485W] 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 A6/A6M 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 SI units or inch-pound units are to be regarded separately as standard. The values stated in each
system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the
two systems may result in non-conformance with the standard.
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 A6/A6M apply.
1.8 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel, Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee A01.02
on Structural Steel for Bridges, Buildings, Rolling Stock and Ships.
Current edition approved May 1, 2016Sept. 1, 2017. Published May 2016September 2017. Originally approved in 1974. Last previous edition approved in 2016 as
A709/A709M – 16.A709/A709M – 16a. DOI: 10.1520/A0709_A0709M-16A.10.1520/A0709_A0709M-17.
*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
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A709/A709M − 17
A
TABLE 1 Tensile and Hardness Requirements
NOTE 1—Where “. . .” appears in this table, there is no requirement.
Minimum Elongation, %
Structural Shape
Yield Point or Reduction
C, E E
Plate Thickness, Tensile St
...
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