1、Designation: A 588/A 588M 05American 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 under the fixe
2、d designationA 588/A 588M; 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 (e) indicates an editorial change since the l
3、ast revision or reapproval.This standard has been approved for use by agencies of the 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 boltedconstruction but intended primarily for use in welded br
4、idgesand buildings where savings in weight or added durability areimportant. The atmospheric corrosion resistance of this steel inmost environments is substantially better than that of carbonstructural steels with or without copper addition (see Note 1).When properly exposed to the atmosphere, this
5、steel is suitablefor many applications in the bare (unpainted) condition. Thisspecification is limited to material up to 8 in. 200 mminclusive in thickness.NOTE 1For methods of estimating the atmospheric corrosion resis-tance of low-alloy steels, see Guide G 101.1.2 When the steel is to be welded, a
6、 welding proceduresuitable for the grade of steel and intended use or service is tobe utilized. See Appendix X3 of Specification A 6/A 6M forinformation on weldability.1.3 The values stated in either inch-pound units or SI unitsare to be regarded separately as standard. Within the text, theSI units
7、are shown in brackets. The values stated in eachsystem are not exact equivalents; therefore, each system is tobe used independently of the other, without combining valuesin any way.1.4 The text of this specification contains notes, footnotes,or both, that provide explanatory material. Such notes and
8、footnotes, excluding those in tables and figures, do not containany mandatory requirements.1.5 For structural products produced from coil and fur-nished without heat treatment or with stress relieving only, theadditional requirements, including additional testing require-ments and the reporting of a
9、dditional test results, of Specifi-cation A 6/A 6M apply.2. Referenced Documents2.1 ASTM Standards2:A6/A6M Specification for General Requirements forRolled Structural Steel Bars, Plates, Shapes, and SheetPilingG 101 Guide for Estimating the Atmospheric CorrosionResistance of Low-Alloy Steels3. Gener
10、al Requirements for Delivery3.1 Structural products furnished under this specificationshall conform to the requirements of the current edition ofSpecification A 6/A 6M, for the specific structural productordered, unless a conflict exists, in which case this specificationshall prevail.3.2 Coils are e
11、xcluded from qualification to this specifica-tion until they are processed into a finished structural product.Structural products produced from coil means structural prod-ucts that have been cut to individual lengths from a coil. Theprocessor directly controls, or is responsible for, the operationsi
12、nvolved in the processing of a coil into a finished structuralproduct. Such operations include decoiling, leveling orstraightening, hot-forming or cold-forming (if applicable),cutting to length, testing, inspection, conditioning, heat treat-ment (if applicable), packaging, marking, loading for shipm
13、ent,and certification.NOTE 2For structural products produced from coil and furnishedwithout heat treatment or with stress relieving only, two test results are tobe reported for each qualifying coil. Additional requirements regardingstructural products produced from coil are described in Specificatio
14、nA 6/A 6M.1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel, and Related Alloys and is the direct responsibility of SubcommitteeA01.02 on Structural Steel for Bridges, Buildings, Rolling Stock, and Ships.Current edition approved April 1, 2005. Published Apr
15、il 2005. Originallyapproved in 1968. Last previous edition approved in 2004 as A 588/A 588M 04.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Documen
16、t Summary page onthe ASTM website.1*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.4. Materials and Manufacture4.1 The steel shall be made to fine grain practice.5. Che
17、mical Composition5.1 The heat analysis shall conform to the requirementsprescribed in Table 1.5.2 The steel shall conform on product analysis to therequirements prescribed in Table 1, subject to the productanalysis tolerances in Specification A 6/A 6M.5.3 The atmospheric corrosion-resistance index,
18、calculatedon the basis of the heat analysis of the steel, as described inGuide G 101Predictive Method Based on the Data of Larabeeand Coburn, shall be 6.0 or higher.NOTE 3The user is cautioned that the Guide G 101 predictiveequation (Predictive Method Based on the Data of Larabee and Coburn)for calc
19、ulation of an atmospheric corrosion-resistance index has only beenverified for the composition limits stated in the guide.5.4 When required, the manufacturer shall supply evidenceof corrosion resistance satisfactory to the purchaser.6. Tensile Requirements6.1 The material as represented by the test
20、specimens shallconform to the requirements for tensile properties prescribed inTable 2.7. Keywords7.1 atmospheric corrosion resistance; bars; bolted construc-tion; bridges; buildings; durability; high-strength; low-alloy;plates; riveted construction; shapes; steel; structural steel;weight; welded co
21、nstructionSUPPLEMENTARY REQUIREMENTSSupplementary requirements shall not apply unless specified in the order or contract. Standardizedsupplementary requirements for use at the option of the purchaser are listed in SpecificationA 6/A 6M. Those that are considered suitable for use with this specificat
22、ion are listed by title:S2. Product Analysis,S3. Simulated Post-Weld Heat Treatment of MechanicalTest Coupons,S5. Charpy V-Notch Impact Test,S6. Drop-Weight Test (for Material 0.625 in. 16 mm andover in Thickness),S8. Ultrasonic Examination,S15. Reduction of Area Measurement,S18. Maximum Tensile Str
23、ength,S30. Charpy V-Notch Impact Test for Structural Shapes:Alternate Core Location, andS32. Single Heat Bundles.TABLE 1 Chemical Requirements (Heat Analysis)NOTE 1Where “. . .” appears in this table, there is no requirement.ElementComposition, %Grade A Grade B Grade C Grade KCarbonA0.19 max 0.20 ma
24、x 0.15 max 0.17 maxManganeseA0.801.25 0.751.35 0.801.35 0.501.20Phosphorus 0.04 max 0.04 max 0.04 max 0.04 maxSulfur 0.05 max 0.05 max 0.05 max 0.05 maxSilicon 0.300.65 0.150.50 0.150.40 0.250.50Nickel 0.40 max 0.50 max 0.250.50 0.40 maxChromium 0.400.65 0.400.70 0.300.50 0.400.70Molybdenum . . . 0.
25、10 maxCopper 0.250.40 0.200.40 0.200.50 0.300.50Vanadium 0.020.10 0.010.10 0.010.10 .Columbium . . . 0.0050.05BAFor each reduction of 0.01 percentage point below the specified maximum forcarbon, an increase of 0.06 percentage point above the specified maximum formanganese is permitted, up to a maxim
26、um of 1.50 %.BFor plates under12 in. 13 mm in thickness, the minimum columbium iswaived.TABLE 2 Tensile RequirementsANOTE 1Where “. . . appears in this table, there is no requirement.Plates and BarsStructuralShapesFor Thick-nesses4 in. 100mm andUnderFor Thick-nessesOver 4 in. 100mmto 5 in. 125mm inc
27、lFor Thick-nessesOver 5 in. 125mmto 8 in.200mm inclAllTensile strength,min,ksi MPa70 485 67 460 63 435 70 485Yield point, min,ksi MPa50 345 46 315 42 290 50 345Elongation in 8in. 200 mm,min, %18B,C. . 18CElongation in 2in. 50 mm,min, %21B,C21B,C21B,C21DASee specimen orientation under the Tension Tes
28、ts section of SpecificationA 6/A 6M.BElongation not required to be determined for floor plate.CFor plates wider than 24 in. 600 mm, the elongation requirement is reducedtwo percentage points. See elongation requirement adjustments in the TensionTests section of Specification A 6/A 6M.DFor wide flang
29、e shapes with flange thickness over 3 in. 75 mm, elongation in2 in. 50 mm of 18 % minimum applies.A 588/A 588M 052SUMMARY OF CHANGESCommittee A01 has identified the location of selected changes to this standard since the last issue(A 588/A 588M - 04) that may impact the use of this standard. (Approv
30、ed April 1, 2005.)(1) Revised the title.Committee A01 has identified the location of selected changes to this standard since the last issue (A 588/A 588M - 03a) thatmay impact the use of this standard. (Approved April 1, 2004.)(1) Added Supplementary Requirement S32.ASTM International takes no posit
31、ion 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 rights, are entirely their own responsibilit
32、y.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM
33、 International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address s
34、hown 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 aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).A 588/A 588M 053
