ASTM A588 - A 588M - 24 高强度低合金结构钢的标准规格高达50 ksi [345 MPa]最小屈服点具有耐大气腐蚀性

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Designation: A588/A588M −24 American Association State
Highway and Transportation Officials Standard
AASHTO No.: M 222
Standard Speciﬁcation for
High-Strength Low-Alloy Structural Steel, up to 50 ksi [345
MPa] Minimum Yield Point, with Atmospheric Corrosion
Resistance
1
This standard is issued under the ﬁxed designation A588/A588M; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope*
1.1 This speciﬁcation covers high-strength low-alloy struc-
tural steel shapes, plates, and bars for welded, riveted, or bolted
construction but intended primarily for use in welded bridges
and buildings where savings in weight or added durability are
important. The atmospheric corrosion resistance of this steel in
most environments is substantially better than that of carbon
structural steels with or without copper addition (see Note 1).
When properly exposed to the atmosphere, this steel is suitable
for many applications in the bare (unpainted) condition. This
speciﬁcation is limited to material up to 8 in. [200 mm]
inclusive in thickness.
NOTE 1—For methods of estimating the atmospheric corrosion resis-
tance of low-alloy steels, see Guide G101.
1.2 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 A6/A6M for
information on weldability.
1.3 Units—This speciﬁcation is expressed in both inch-
pound units and in SI units; however, unless the purchase order
or contract speciﬁes the applicable M speciﬁcation designation
(SI units), the inch-pound units shall apply. 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.
Combining values from the two systems may result in noncon-
formances with the standard.
1.4 The text of this speciﬁcation contains notes, footnotes,
or both, that provide explanatory material. Such notes and
footnotes, excluding those in tables and ﬁgures, do not contain
any mandatory requirements.
1.5 For structural products produced from coil and fur-
nished without heat treatment or with stress relieving only, the
additional requirements, including additional testing require-
ments and the reporting of additional test results, of Speciﬁ-
cation A6/A6M apply.
1.6 This international standard was developed in accor-
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 ASTM Standards:
2
A6/A6M Speciﬁcation for General Requirements for Rolled
Structural Steel Bars, Plates, Shapes, and Sheet Piling
G101 Guide for Estimating the Atmospheric Corrosion Re-
sistance of Low-Alloy Steels
3. General Requirements for Delivery
3.1 Product furnished to this speciﬁcation shall conform to
the requirements of Speciﬁcation A6/A6M, including any
supplementary requirements indicated in the purchase order or
contract. Failure to comply with the general requirements of
Speciﬁcation A6/A6M constitutes nonconformance with this
speciﬁcation. In case of conﬂict between the requirements of
this speciﬁcation and Speciﬁcation A6/A6M, this speciﬁcation
shall prevail.
3.2 Coils are excluded from qualiﬁcation to this speciﬁca-
tion until they are processed into a ﬁnished structural product.
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 Oct. 15, 2024. Published November 2024. Originally
approved in 1968. Last previous edition approved in 2019 as A588/A588M – 19.
DOI: 10.1520/A0588_A0588M-24.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at www.astm.org/contact. For Annual Book of
ASTM Standards volume information, refer to the standard’s Document Summary
page on the ASTM website.
*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
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

Structural products produced from coil means structural prod-
ucts that have been cut to individual lengths from a coil. The
processor directly controls, or is responsible for, the operations
involved in the processing of a coil into a ﬁnished structural
product. Such operations include decoiling, leveling or
straightening, hot-forming or cold-forming (if applicable),
cutting to length, testing, inspection, conditioning, heat treat-
ment (if applicable), packaging, marking, loading for shipment,
and certiﬁcation.
NOTE 2—For structural products produced from coil and furnished
without heat treatment or with stress relieving only, two test results are to
be reported for each qualifying coil. Additional requirements regarding
structural products produced from coil are described in Speciﬁcation
A6/A6M.
4. Materials and Manufacture
4.1 The steel shall be made to ﬁne grain practice.
5. Chemical Composition
5.1 The heat analysis shall conform to the requirements
prescribed in Table 1.
5.2 When a purchaser speciﬁes a product analysis in accor-
dance with Supplementary Requirement S2, the product analy-
sis shall conform to the requirements given in Table 1, subject
to the product analysis tolerances in Speciﬁcation A6/A6M.
5.3 The atmospheric corrosion-resistance index, calculated
on the basis of the heat analysis of the steel, as described in
Guide G101 (Predictive Method Based on the Data of Larabee
and Coburn), shall be 6.0 or higher.
NOTE 3—The user is cautioned that the Guide G101 predictive equation
(Predictive Method Based on the Data of Larabee and Coburn) for
calculation of an atmospheric corrosion-resistance index has only been
veriﬁed for the composition limits stated in the guide.
5.4 When required, the manufacturer shall supply evidence
of corrosion resistance satisfactory to the purchaser.
6. Tension Test
6.1 The material as represented by the test specimens shall
conform to the requirements for tensile properties prescribed in
Table 2.
7. Keywords
7.1 atmospheric corrosion resistance; bars; bolted construc-
tion; bridges; buildings; durability; high-strength; low-alloy;
plates; riveted construction; shapes; steel; structural steel;
weight; welded construction
TABLE 1 Chemical Requirements (Heat Analysis)
NOTE 1—Where “. . .” appears in this table, there is no requirement.
Element
Composition, %
Grade A Grade B Grade K
Carbon
A
0.19 max 0.20 max 0.17 max
Manganese
A
0.80–1.25 0.75–1.35 0.50–1.20
Phosphorus
C
0.030 max 0.030 max 0.030 max
Sulfur
C
0.030 max 0.030 max 0.030 max
Silicon 0.30–0.65 0.15–0.50 0.25–0.50
Nickel 0.40 max 0.50 max 0.40 max
Chromium 0.40–0.65 0.40–0.70 0.40–0.70
Molybdenum ... ... 0.10 max
Copper 0.25–0.40 0.20–0.40 0.30–0.50
Vanadium 0.02–0.10 0.01–0.10 ...
Columbium/
niobium
D
... ... 0.005–0.05
B
A
For each reduction of 0.01 percentage point below the speciﬁed maximum for
carbon, an increase of 0.06 percentage point above the speciﬁed maximum for
manganese is permitted, up to a maximum of 1.50 %.
B
For plates under
1
⁄
2
in. [13 mm] in thickness, the minimum columbium (niobium)
is waived.
C
A maximum phosphorus content of 0.04 % and a maximum sulfur content of
0.05 % are permitted for the following materials:
· Structural shapes
· Bars
· Plates with widths up to and including 15 in. [380 mm]
D
Columbium (Cb) and niobium (Nb) are considered interchangeable names for
the same element and both names are acceptable.
TABLE 2 Tensile Requirements
A
NOTE 1—Where “. . .” appears in this table, there is no requirement.
Plates and Bars
Structural
Shapes
For Thick-
nesses
4 in.
[100 mm]
and Under
For Thick-
nesses
Over 4 in.
[100 mm] to
5 in.
[125 mm] incl
For Thick-
nesses
Over 5 in.
[125 mm] to
8 in.
[200 mm] incl
All
Tensile strength,
min,ksi [MPa]
70 [485] 67 [460] 63 [435] 70 [485]
Yield point, min,
ksi [MPa]
50 [345] 46 [315] 42 [290] 50 [345]
Elongation in
8 in.
[200 mm],
min, %
18
B,C
... ... 18
C
Elongation in
2 in. [50 mm],
min, %
21
B,C
21
B,C
21
B,C
21
D
A
See specimen orientation under the Tension Tests section of Speciﬁcation
A6/A6M.
B
Elongation not required to be determined for ﬂoor plate.
C
For plates wider than 24 in. [600 mm], the elongation requirement is reduced two
percentage points. See elongation requirement adjustments in the Tension Tests
section of Speciﬁcation A6/A6M.
D
For wide ﬂange shapes with ﬂange thickness over 3 in. [75 mm], elongation in
2 in. [50 mm] of 18 % minimum applies.
A588/A588M − 24
2

SUPPLEMENTARY REQUIREMENTS

Supplementary requirements shall not apply unless speciﬁed in the order or contract. Standardized

supplementary requirements for use at the option of the purchaser are listed in Speciﬁcation A6/A6M.

Those that are considered suitable for use with this speciﬁcation are listed by title:

S2. Product Analysis,

S3. Simulated Post-Weld Heat Treatment of Mechanical

Test Coupons,

S5. Charpy V-Notch Impact Test,

S6. Drop-Weight Test (for Material 0.625 in. [16 mm] and

over in Thickness),

S8. Ultrasonic Examination,

S15. Reduction of Area Measurement,

S18. Maximum Tensile Strength,

S30. Charpy V-Notch Impact Test for Structural Shapes:

Alternate Core Location, and

S32. Single Heat Bundles.

SUMMARY OF CHANGES

Committee A01 has identiﬁed the location of selected changes to this standard since the last issue

(A588/A588M – 19) that may impact the use of this standard. (Approved Oct. 15, 2024.)

(1) Revised 5.2.

ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned

in this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk

of infringement of such rights, are entirely their own responsibility.

This standard is subject to revision at any time by the responsible technical committee and must be reviewed every ﬁve years and

if not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standards

and should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of the

responsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you should

make your views known to the ASTM Committee on Standards, at the address shown below.

This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,

United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the above

address or at 610-832-9585 (phone), or through the ASTM website (www.astm.org/contact). Permission rights to photocopy the

standard may also be secured from the Copyright Clearance Center, 222 Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600;

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A588/A588M − 24

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标签： #腐蚀 #低合金 #钢

摘要：

本页面详细介绍ASTM A588 / A 588M - 24标准规格，涵盖高强度低合金结构钢的化学成分、机械性能及耐大气腐蚀特性，适用于最小屈服点高达50 ksi [345 MPa]的建筑与桥梁结构件。该标准规范由美国材料与试验协会（ASTM）发布，规定了钢材在未涂层条件下形成稳定氧化层以抵抗大气腐蚀的能力，广泛用于铁路车辆、输电塔、集装箱等暴露环境。页面提供全面的材料参数、对比数据及采购参考，帮助工程师和制造商准确选材并确保符合国际规范。

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ASTM A588 - A 588M - 24 高强度低合金结构钢的标准规格高达50 ksi [345 MPa]最小屈服点具有耐大气腐蚀性

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