1、Designation: A871/A871M 14Standard Specification forHigh-Strength Low-Alloy Structural Steel Plate WithAtmospheric Corrosion Resistance1This standard is issued under the fixed designation A871/A871M; the number immediately following the designation indicates the yearof original adoption or, in the c
2、ase 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 high-strength low-alloy steelplate intended for use in tubular
3、 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 substantially better tha
4、n 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 Guide G101.1.3 When the
5、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 A6/A6M for information on weldability.1.4 Supplementary requirements in accordance with Speci-fication A6/A6M are available,
6、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; therefore, each system mu
7、st 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:2A6/A6M Specification for General Requirements for RolledStructural Steel Bars, Plates, Shapes, and Sheet PilingA370 Test Methods
8、 and Definitions for Mechanical Testingof Steel ProductsA673/A673M Specification for Sampling Procedure for Im-pact Testing of Structural SteelG101 Guide for Estimating the Atmospheric Corrosion Re-sistance of Low-Alloy Steels3. General Requirements for Delivery3.1 Material furnished under this spec
9、ification shall con-form to the requirements of the current edition of SpecificationA6/A6M, 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. Heat Treatment5.1 Grade 65 in
10、 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 temperedmaterial shall be heat tr
11、eated 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 maximum thickness of plates is
12、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 shall conform to the chemical req
13、uire-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 A6/A6M.1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the d
14、irect responsibility of SubcommitteeA01.02 on Structural Steel for Bridges, Buildings, Rolling Stock and Ships.Current edition approved May 1, 2014. Published May 2014. Originallyapproved in 1987. Last previous edition approved in 2012 as A871/A871M 12.DOI: 10.1520/A0871_A0871M-14.2For referenced AS
15、TM 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.*A Summary of Changes section appears at the end of this standardCopyright ASTM
16、 International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States16.3 The atmospheric corrosion-resistance index, calculatedon the basis of the heat analysis for the steel, as described inGuide G101Predictive Method Based on the Data of Larabeeand Coburn, shall be 6
17、.0 or higher.NOTE 2The user is cautioned that the Guide G101 (Predictive MethodBased 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 e
18、videnceof corrosion resistance satisfactory to 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 th
19、ickness under 0.312 in. 8 mm andover 3.5 in. 90 mm, see Specification A6/A6M.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 nego
20、tiated between the purchaser and the manu-facturer.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 A673/A673M. If the purchase order does notspecify the frequency, “H” testing f
21、requency shall be supplied.9. Keywords9.1 as-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 purcha
22、se order or contract.Standardized supplementary requirements for use at the option of the purchaser are listed inSpecification A6/A6M.TABLE 1 Chemical Requirements (Heat Analysis)ElementComposition, %Type I Type II Type IVCarbonA0.19 max 0.20 max 0.17 maxManganeseA0.801.35 0.751.35 0.501.20Phosphoru
23、s 0.030 max 0.030 max 0.030 maxSulfur 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 0.400.70 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 . . . . . . 0.0050.05BAFo
24、r 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 maximum of 1.50 %.BFor plates under12 in. 13 mm in thickness, the minimum columbium is waived.TABLE 2 Tensile Requireme
25、ntsAGradeYield StrengthBmin. ksi MPaTensile Strengthmin. ksi MPaMinimumElongation, %CIn8in.200 mmIn2in.50 mm606560 41565 45075 52080 55016151817AFor plates wider than 24 in. 600 mm, the test specimen is taken in thetransverse direction. See Tension Tests section of Specification A6/A6M.BMeasured at
26、0.2 % offset or 0.5 % extension under load as described inDetermination of Tensile Properties section of Test Methods A370.CFor plates wider than 24 in. 600 mm, the elongation requirement is reducedthree percentage points.TABLE 3 Charpy V-Notch Impact Test RequirementsPlateThicknessin mmAbsorbedEner
27、gyft-lb JTemperatureF CUp to12 12 inclOver12 1215 2015 200 18 20 29A871/A871M 142SUMMARY OF CHANGESCommittee A01 has identified the location of selected changes to this standard since the last issue(A871/A871M 12) that may impact the use of this standard. (Approved May 1, 2014.)(1) Modified phosphor
28、ous and sulfur limits in 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
29、 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 withdrawn. Your comments are invited either for revision of this s
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31、r 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 aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).A871/A871M 143
