1、Designation: A588/A588M 10A588/A588M 15 American Association StateHighway and Transportation Officials StandardAASHTO No.: M 222Standard Specification forHigh-Strength Low-Alloy Structural Steel, up to 50 ksi 345MPa Minimum Yield Point, with Atmospheric CorrosionResistance1This standard is issued un
2、der the fixed designation A588/A588M; the number immediately following the designation indicates the yearof 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 s
3、ince 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 structural steel shapes, plates, and bars for welded, riveted, or boltedconstruction but intended primarily for us
4、e in welded bridges and buildings where savings in weight or added durability areimportant. The atmospheric corrosion resistance of this steel in most environments is substantially better than that of carbonstructural steels with or without copper addition (see Note 1). When properly exposed to the
5、atmosphere, this steel is suitable formany applications in the bare (unpainted) condition. This specification is limited to material up to 8 in. 200 mm inclusive inthickness.NOTE 1For methods of estimating the atmospheric corrosion resistance of low-alloy steels, see Guide G101.1.2 When the steel is
6、 to be welded, a welding procedure suitable for the grade of steel and intended use or service is to beutilized. See Appendix X3 of Specification A6/A6M for information on weldability.1.3 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the t
7、ext, the SI unitsare shown in brackets. The values stated in each system are not exact equivalents; therefore, each system is to be usedindependently of the other, without combining values in any way.1.4 The text of this specification contains notes, footnotes, or both, that provide explanatory mate
8、rial. 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 furnished without heat treatment or with stress relieving only, the additionalrequirements, including additional testing requirements and
9、 the reporting of additional test results, of Specification A6/A6M apply.2. Referenced Documents2.1 ASTM Standards:2A6/A6M Specification for General Requirements for Rolled Structural Steel Bars, Plates, Shapes, and Sheet PilingG101 Guide for Estimating the Atmospheric Corrosion Resistance of Low-Al
10、loy Steels3. General Requirements for Delivery3.1 Structural products furnished under this specification shall conform to the requirements of the current edition ofSpecification A6/A6M, for the specific structural product ordered, unless a conflict exists, in which case this specification shallpreva
11、il.3.2 Coils are excluded from qualification to this specification until they are processed into a finished structural product.Structural products produced from coil means structural products that have been cut to individual lengths from a coil. Theprocessor directly controls, or is responsible for,
12、 the operations involved in the processing of a coil into a finished structural1 This specification is under the jurisdiction ofASTM Committee A01 on Steel, Stainless Steel and RelatedAlloys and is the direct responsibility of Subcommittee A01.02on Structural Steel for Bridges, Buildings, Rolling St
13、ock and Ships.Current edition approved Sept. 1, 2010March 1, 2015. Published September 2010March 2015. Originally approved in 1968. Last previous edition approved in 20052010as A588/A588M 05.A588/A588M 10. DOI: 10.1520/A0588_A0588M-10. 10.1520/A0588_A0588M-15.2 For referencedASTM standards, visit th
14、eASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an
15、 indication of what changes have been made to the previous version. Becauseit 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 versionof the standard as published by ASTM is to
16、 be considered the official document.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1product. Such operations include decoiling, leveling or straightening, hot-forming o
17、r cold-forming (if applicable), cutting to length,testing, inspection, conditioning, heat treatment (if applicable), packaging, marking, loading for shipment, and certification.NOTE 2For structural products produced from coil and furnished without heat treatment or with stress relieving only, two te
18、st results are to be reportedfor each qualifying coil. Additional requirements regarding structural products produced from coil are described in Specification A6/A6M.4. Materials and Manufacture4.1 The steel shall be made to fine grain practice.5. Chemical Composition5.1 The heat analysis shall conf
19、orm to the requirements prescribed in Table 1.5.2 The steel shall conform on product analysis to the requirements prescribed in Table 1, subject to the product analysistolerances in Specification A6/A6M.5.3 The atmospheric corrosion-resistance index, calculated on the basis of the heat analysis of t
20、he steel, as described in GuideG101Predictive Method Based on the Data of Larabee and Coburn, shall be 6.0 or higher.NOTE 3The user is cautioned that the Guide G101 predictive equation (Predictive Method Based on the Data of Larabee and Coburn) for calculationof an atmospheric corrosion-resistance i
21、ndex 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. Tensile Requirements6.1 The material as represented by the test specimens shall conform to the requirements fo
22、r tensile properties prescribed in Table2.7. Keywords7.1 atmospheric corrosion resistance; bars; bolted construction; bridges; buildings; durability; high-strength; low-alloy; plates;riveted construction; shapes; steel; structural steel; weight; welded constructionTABLE 1 Chemical Requirements (Heat
23、 Analysis)NOTE 1Where “. . .” appears in this table, there is no requirement.ElementComposition, %Grade A Grade B Grade KCarbonA 0.19 max 0.20 max 0.17 maxManganeseA 0.801.25 0.751.35 0.501.20Phosphorus 0.04 max 0.04 max 0.04 maxPhosphorusC 0.030 max 0.030 max 0.030 maxSulfur 0.05 max 0.05 max 0.05
24、maxSulfurC 0.030 max 0.030 max 0.030 maxSilicon 0.300.65 0.150.50 0.250.50Nickel 0.40 max 0.50 max 0.40 maxChromium 0.400.65 0.400.70 0.400.70Molybdenum . . 0.10 maxCopper 0.250.40 0.200.40 0.300.50Vanadium 0.020.10 0.010.10 .Columbium . . 0.0050.05BA For each reduction of 0.01 percentage point belo
25、w the specified maximum forcarbon, an increase of 0.06 percentage point above the specified maximum formanganese is permitted, up to a maximum of 1.50 %.B For plates under 12 in. 13 mm in thickness, the minimum columbium is waived.CAmaximum phosphorus content of 0.04 % and a maximum sulfur content o
26、f 0.05% are permitted for the following materials: Structural shapes Bars Plates with widths up to and including 15 in. 380 mmA588/A588M 152SUPPLEMENTARY REQUIREMENTSSupplementary requirements shall not apply unless specified in the order or contract. Standardizedsupplementary requirements for use a
27、t 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 Mate
28、rial 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, andS32. Single Heat Bundles.TABLE 2 Tensile RequirementsANOTE 1Where “. . .“. . .” a
29、ppears in this table, there is no require-ment.Plates and BarsStructuralShapesFor Thick-nesses4 in. 100mm andUnderFor Thick-nessesOver 4 in. 100mmto 5 in. 125mm inclFor Thick-nessesOver 5 in. 125mmto 8 in.200mm inclAllTensile strength,min,ksi MPa70 485 67 460 63 435 70 485Yield point, min,ksi MPa50
30、345 46 315 42 290 50 345Elongation in 8in. 200 mm,min, %18B,C . . 18CElongation in 2in. 50 mm,min, %21B,C 21B,C 21B,C 21DA See specimen orientation under the Tension Tests section of SpecificationA6/A6M.B Elongation not required to be determined for floor plate.C For plates wider than 24 in. 600 mm,
31、 the elongation requirement is reduced twopercentage points. See elongation requirement adjustments in the Tension Testssection of Specification A6/A6M.D For wide flange shapes with flange thickness over 3 in. 75 mm, elongation in 2in. 50 mm of 18 % minimum applies.A588/A588M 153SUMMARY OF CHANGESCo
32、mmittee A01 has identified the location of selected changes to this standard since the last issue(A588/A588M 05A588/A588M 10) that may impact the use of this standard. (Approved Sept.March 1,2010.)2015.)(1) Revised Table 1 to delete Grade C information.phosphorus and sulfur levels for wide plates in
33、 Table 1.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such ri
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