1、Designation: A 871/A 871M 03 (Reapproved 2007)Standard Specification forHigh-Strength Low-Alloy Structural Steel Plate WithAtmospheric Corrosion Resistance1This standard is issued under the fixed designation A 871/A 871M; the number immediately following the designation indicates the yearof original
2、 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. Scope1.1 This specification covers high-strength low-alloy steelplate inten
3、ded for use in tubular structures and poles or in othersuitable applications. Two grades, 60 and 65, may be providedas-rolled, normalized or quenched and tempered as required tomeet the specified mechanical requirements.1.2 The atmospheric corrosion resistance of this steel inmost environments is su
4、bstantially better than that of carbonstructural steels with or without copper addition (see Note 1).When properly exposed to the atmosphere, this steel can beused bare (unpainted) for many applications.NOTE 1For methods of estimating the atmospheric corrosion resis-tance of low-alloy steels, see Gu
5、ide G 101.1.3 When the steel is to be welded, it is presupposed thatwelding procedures suitable for the grade of steel and intendeduse or service will be utilized. See Appendix X3 of Specifica-tion A 6/A 6M for information on weldability.1.4 Supplementary requirements in accordance with Speci-ficati
6、on A 6/A 6M are available, but shall apply only whenspecified by the purchaser at time of ordering.1.5 The values stated in either inch-pound units or SI unitsare to be regarded as standard. Within the text, the SI units areshown in brackets. The values stated in each system are notexact equivalents
7、; therefore, each system must be used inde-pendently of the other. Combining values from the two systemsmay result in nonconformance with the specification.2. Referenced Documents2.1 ASTM Standards:2A 6/A 6M Specification for General Requirements forRolled Structural Steel Bars, Plates, Shapes, and
8、SheetPilingA 370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA 673/A 673M Specification for Sampling Procedure forImpact Testing of Structural SteelG 101 Guide for Estimating the Atmospheric CorrosionResistance of Low-Alloy Steels3. General Requirements for Delivery3.1 Materi
9、al furnished under this specification shall con-form to the requirements of the current edition of SpecificationA 6/A 6M, for the ordered material, unless a conflict exists inwhich case this specification shall prevail.4. Materials and Manufacture4.1 The steel shall be made to fine grain practice.5.
10、 Heat Treatment5.1 Grade 65 in thicknesses of316 to34 in. 5 to 20 mm andGrade 60 in thicknesses of316 to 138 in. 5 to 35 mm arenormally furnished in the as-rolled condition. The manufac-turer has the option to heat treat this material to meet themechanical requirements of Section 7. Quenched and tem
11、peredmaterial shall be heat treated by heating to not less than 1650F900C, holding a sufficient time to attain uniform heatthroughout the material, quenching in a suitable medium, andtempering at not less than 1100F 595C. Heat treatingtemperatures shall be reported on the test certificates.5.2 The m
12、aximum thickness of plates is limited only by thecapacity of the composition to meet the specified mechanicalrequirements. The individual manufacturer shall be contactedto determine the actual maximum thickness for each grade andheat treatment method.6. Chemical Requirements6.1 The heat analysis sha
13、ll conform to the chemical require-ments of Table 1.6.2 The steel shall conform on product analysis to thechemical requirements of Table 1, subject to the productanalysis tolerances in Specification A 6/A 6M.1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel
14、 and Related Alloys and is the direct responsibility of SubcommitteeA01.02 on Structural Steel for Bridges, Buildings, Rolling Stock and Ships.Current edition approved Sept. 1, 2007. Published September 2007. Originallyapproved in 1987. Last previous edition approved in 2003 as A 871/A 871M 03.2For
15、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 Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700,
16、 West Conshohocken, PA 19428-2959, United States.6.3 The atmospheric corrosion-resistance index, calculatedon the basis of the heat analysis for the steel, as described inGuide G 101Predictive Method Based on the Data of Lara-bee and Coburn, shall be 6.0 or higher.NOTE 2The user is cautioned that th
17、e Guide G 101 (PredictiveMethod Based on the Data of Larabee and Coburn) for calculation of anatmospheric corrosion-resistance index has only been verified for thecomposition limits stated in that guide.6.4 When required, the manufacturer shall supply evidenceof corrosion resistance satisfactory to
18、the purchaser.7. Mechanical Requirements7.1 Tension Tests:7.1.1 The steel as represented by the tension test specimensshall conform to the tensile requirements of Table 2.7.1.2 For adjustments in Table 2 percentage elongationrequirements for material thickness under 0.312 in. 8 mm andover 3.5 in. 90
19、 mm, see Specification A 6/A 6M.7.2 Charpy V-Notch Impact Tests:7.2.1 The steel, as represented by the Charpy V-Notch test,shall conform to the impact test requirements of Table 3.7.2.2 If more stringent impact requirements are required,they shall be negotiated between the purchaser and the manu-fac
20、turer.8. Test Specimens and Number of Tests8.1 The purchaser shall indicate on the purchase order thefrequency of Charpy V-Notch Impact Testing, as provided forin Specification A 673/A 673M. If the purchase order does notspecify the frequency, “H” testing frequency shall be supplied.9. Keywords9.1 a
21、s-rolled; atmospheric corrosion resistance; high-strength; low-alloy; normalized; plate; poles; quenched; steel;structural steel; tempered; tubular structuresSUPPLEMENTARY REQUIREMENTSSupplementary requirements shall not apply unless specified in the purchase order or contract.Standardized supplemen
22、tary requirements for use at the option of the purchaser are listed inSpecification A 6/A 6 M.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 determinat
23、ion of the validity of any such patent rights, and the riskof 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 andif not revised, either reapproved or withd
24、rawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your
25、 comments have not received a fair hearing you shouldmake 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 (singl
26、e 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).TABLE 1 Chemical Requirements (Heat Analysis)ElementComposition, %Type I Type II Type I
27、II Type IVCarbonA0.19 max 0.20 max 0.15 max 0.17 maxManganeseA0.801.35 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 0.400.70 0.400.70 0.3
28、00.50 0.400.70Molybdenum . . . . . . . . . 0.10 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 t
29、he specified maximum formanganese is permitted, up to a maximum of 1.50 %.BFor plates under12 in. 13 mm in thickness, the minimum columbium iswaived.TABLE 2 Tensile RequirementsAGradeYield StrengthBmin. ksi MPaTensile Strengthmin. ksi MPaMinimumElongation, %CIn8in.200 mmIn2in.50 mm606560 41565 45075
30、 52080 55016151817AFor plates wider than 24 in. 600 mm, the test specimen is taken in thetransverse direction. See 11.2 of Specification A 6/A 6M.BMeasured at 0.2 % offset or 0.5 % extension under load as described inSection 13 on yield strength of Test Methods A 370.CFor plates wider than 24 in. 600 mm, the elongation requirement is reducedthree percentage points.TABLE 3 Charpy V-Notch Impact Test RequirementsPlateThicknessin mmAbsorbedEnergyft-lb JTemperatureF CUp to12 12 inclOver12 1215 2015 200 18 20 29A 871/A 871M 03 (2007)2
