ASTM A710 A710M-2002(2013) Standard Specification for Precipitation&ndash Strengthened Low-Carbon Nickel-Copper-Chromium-Molybdenum-Columbium Alloy Structural Steel Plates《沉淀硬化低碳镍-.pdf

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1、Designation: A710/A710M 02 (Reapproved 2013)Standard Specification forPrecipitationStrengthened Low-Carbon Nickel-Copper-Chromium-Molybdenum-Columbium Alloy Structural SteelPlates1This standard is issued under the fixed designation A710/A710M; the number immediately following the designation indicat

2、es 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 since the last revision or reapproval.This standard has been approved for use by agencies of th

3、e Department of Defense.1. Scope1.1 This specification covers low-carbon precipitationstrengthened nickel - copper - chromium - molybdenum -columbium alloy steel plates for general applications. Thealloys in this specification are strengthened by precipitation invarious temperature ranges. Precipita

4、tion strengthening canoccur upon air cooling after hot rolling, during normalizing,and by another heat treatment. These grades are not intendedfor use in applications above 900F 540C.1.2 Two grades, each with three classes, are provided asfollows:Grade and Class ConditionGrade A, Class 1 as-rolled a

5、nd precipitation heat treatedGrade A, Class 2 normalized and precipitation heat treatedGrade A, Class 3 quenched and precipitation heat treatedGrade B, Class 1 as-rolledGrade B, Class 2 normalizedGrade B, Class 3 normalized and precipitation heat treated1.3 Grade A provides minimum yield strength le

6、vels rang-ing from 50 to 85 ksi 345 to 585 MPa, depending onthickness and condition.1.4 Grade A, Class 1, plates are limited to a maximumthickness of34 in. 20 mm. The maximum thickness of GradeA, Classes 2 and 3, is limited only by the capacity of thecomposition to meet the specified mechanical prop

7、erty require-ments; however, current practice normally limits the maximumthickness to 8 in. 200 mm.1.5 Mandatory notch toughness requirements are specifiedfor Grade A, Class 1.1.6 Grade B provides minimum yield strength levels rang-ing from 70 to 75 ksi 480 to 515 MPa, depending onthickness and cond

8、ition.1.7 Grade B plates are limited to a maximum thickness of 2in. 50 mm.1.8 Mandatory notch toughness requirements are specifiedfor the three classes of Grade B.1.9 When the steel is to be welded, it is presupposed that awelding procedure suitable for the grade of steel and intendeduse or service

9、will be utilized. See Appendix X3 of Specifica-tion A6/A6M for information on weldability.1.10 The values stated in either inch-pound units or SI unitsare to be regarded separately as standard. Within the text, theSI units are shown in brackets. The values stated in eachsystem are not exact equivale

10、nts; therefore, each system mustbe used independently of the other. Combining values from thetwo systems may result in nonconformance with the specifi-cation.2. Referenced Documents2.1 ASTM Standards:2A6/A6M Specification for General Requirements for RolledStructural Steel Bars, Plates, Shapes, and

11、Sheet PilingA673/A673M Specification for Sampling Procedure for Im-pact Testing of Structural Steel3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 precipitation heat treatmenta sub-critical tempera-ture thermal treatment performed to cause precipitation ofsubmicroscopical cons

12、tituents, etc., so as to result in enhance-ment of some desirable property.3.1.2 precipitation strengtheningthe precipitation of sub-microscopic and/or microscopic constituents of an alloy atvarious temperatures, which results in the alteration of certainproperties.1This specification is under the j

13、urisdiction 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 May 15, 2013. Published June 2013. Originallyapproved in 1974. Last previo

14、us edition approved in 2007 as A710/A710M 02(2007). DOI: 10.1520/A0710_A0710M-02R13.2For 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 Document Summary p

15、age onthe ASTM website.*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 States13.1.3 soakto hold at temperature after the material hasattained the temperature throughout.4. Gene

16、ral Requirements for Delivery4.1 Material furnished under this specification 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.5. Materials and Manufacture5.1 The steel sh

17、all be made to fine grain practice.6. Heat Treatment6.1 Grade A, Class 1 material shall be precipitation heattreated in the temperature range from 1000 to 1300F 540 to705C for a time to be determined by the material manufac-turer.6.2 Grade A, Class 2 material shall be normalized at atemperature in t

18、he range from 1600 to 1700F 870 to 925Cand then precipitation heat treated at a temperature in the rangefrom 1000 to 1300F 540 to 705C for a time to bedetermined by the material manufacturer.6.3 Grade A, Class 3 material shall be quenched in water oroil from a temperature in the range from 1600 to 1

19、700F 870to 925C and then precipitation heat treated at a temperaturein the range from 1000 to 1300F 540 to 705C for a time tobe determined by the material manufacturer.6.4 Grade B, Class 1 shall be hot-rolled.6.5 Grade B, Class 2 shall be normalized after hot rolling byreheating to 1600 to 1700F 870

20、 to 925C, and then cooled instill air.6.6 Grade B, Class 3, shall be normalized at 1600 to 1700F870 to 925C, and then precipitation heat treated at 1000 to1300F 540 to 705C for a time to be determined by thematerial manufacturer. One hour at a specified temperature isgenerally considered as a maximu

21、m.6.7 If the purchaser elects to perform the thermal (heat)treatment, the material shall be accepted on the basis of milltests from test coupons heat treated in accordance with thepurchase order requirements. If the test coupon heat treatmentrequirements are not indicated on the purchase order, them

22、anufacturer shall heat treat the test coupons under conditionshe considers appropriate. The manufacturer shall inform thepurchaser of the procedure followed in thermally treating thetest coupons at the mill.7. Chemical Composition7.1 The heat analysis shall conform to the requirements asto chemical

23、composition prescribed in Table 1.7.2 The steel shall conform on product analysis to therequirements prescribed in Table 1, subject to the productanalysis tolerance in Specification A6/A6M for alloy steels.8. Tension Test8.1 The material, as represented by the test specimens, shallconform to the req

24、uirements specified in Table 2.8.2 Number of TestsOne tension test shall be taken from acorner of each plate as heat treated for each class of material.For plates38 in. 10 mm and under in thickness, a tension testshall be made from a corner of each of two plates per lot. A lotshall consist of plates

25、 from the same heat and thickness, sameprior condition and scheduled heat treatment, and shall notexceed 15 tons 13.6 Mg in weight. Plates wider than 24 in.610 mm shall be tested in the transverse direction and aresubject to the modifications for elongation contained in foot-noteDof Table 2.9. Notch

26、 Toughness Requirements9.1 Notch Toughness TestsGrade A, Class 1:9.1.1 Notch toughness tests shall be made in accordancewith Test Frequency H of Specification A673/A673M. Uponagreement, transverse tests may be specified insteadof the longitudinal tests specified in Specification A673/A673M (plates o

27、nly).9.1.2 The test results shall meet a minimum average valueof 20 ftlbf 27 J at 50F 45C for longitudinal specimens.For transverse specimens, the test results shall meet a mini-mum average value of 15 ftlbf 20 J at 50F 45C. Byagreement, a test temperature lower than 50F 45C maybe used.9.2 Notch Tou

28、ghness TestsGrade B:9.3 Notch toughness tests shall be made in accordance withTest Frequency H of Specification A673/A673M.TABLE 1 Chemical RequirementsElementComposition, %Grade A Grade BCarbon 0.07 max 0.030.09Manganese 0.400.70 0.451.30Phosphorus, max 0.025 0.025Sulfur, max 0.025 0.025Silicon 0.4

29、0 max 0.300.50Nickel 0.701.00 0.801.00Chromium 0.600.90 0.30 maxMolybdenum 0.150.25 0.25 maxCopper 1.001.30 1.251.50Columbium 0.02 min 0.020.06Titanium . 0.010.03NOTE: Where an ellipsis (.) appears in the table, there is no requirement.A710/A710M 02 (2013)29.4 The test results for Grade B, Class 1,

30、and Grade B, Class3, shall have a minimum average notch toughness of 35 ftlbf47 J at -10F -23C in the longitudinal direction of theplate. For Grade B, Class 2, test results shall have a minumumaverage notch toughness of 20 ftlbf 27 J at -50F -45C inthe longitudinal direction of the plate.10. Retreat

31、ment10.1 Thermally treated material that fails to meet the me-chanical property requirements may be reheat-treated. Allrequired tests shall be repeated when material is resubmittedfor inspection.11. Keywords11.1 alloy; carbon; chromium; columbium; copper; generalapplications; low carbon; manganese;

32、molybdenum; nickel;plates; precipitation heat treatment; precipitation strengthen-ing; steel; structural steelSUPPLEMENTARY REQUIREMENTSSupplementary requirements shall not apply unless specified in the purchase order or contract.Standardized supplementary requirements for use at the option of the p

33、urchaser are listed inSpecification A6/A6M. In addition, the following supplementary requirement is also suitable for usewith this specification:S94. Notch ToughnessGrade A, Classes 2 and 3S94.1 Notch toughness tests on longitudinal specimens shallbe made in accordance with Test Frequency H of Speci

34、ficationA673/A673M.S94.2 Grade A, Class 2The test results shall meet aminimum average value of 50 ftlbf 69 J at 50F 45C.S94.3 Grade A, Class 3The test results shall meet aminimum average value of 50 ftlbf 69 J at 80F 60C.TABLE 2 Tensile RequirementsAGrade AClass 1Grade AClass 2Grade AClass 3Grade BC

35、lass 1Grade BClass 2Grade BClass 3Yield strength,Bmin, ksi MPa14 in. 6.5 mm and under 85 585 65 450 80 550 70 485 70 485 70 515Over14 in. to516 in. 6.5 to 8 mm, incl 85 585 65 450 80 550 70 485 70 485 70 515Over516 in. to38 in. 8 to 10 mm, incl 80 550 65 450 80 550 70 485 70 485 70 515Over38 in. to1

36、2 in. 10 to 12.5 mm, incl 80 550 65 450 80 550 70 485 70 485 70 515Over12 in. to34 in. 12.5 to 20 mm, incl 80 550 65 450 80 550 70 485 70 485 70 515Over34 in. to 1 in. 20 to 25 mm, incl . 65 450 80 550 70 485 70 485 70 485Over 1 in. to 114 in. 25 to 30 mm, incl . 60 415 80 550 . 70 485 70 485Over 11

37、4 in. to 2 in. 30 to 50 mm, incl . 60 415 75 515 . 70 485 70 485Over 2 in. to 4 in. 50 to 100 mm, incl . 55 380 65 450 . . .Over 4 in. 100 mm . 50 345 60 415 . . .Tensile strength, min, ksi MPa14 in. 6.5 mm and under 90 620 72 495 85 585 80 550 80 550 80 585Over14 in. to516 in. 6.5 to 8 mm, incl 90

38、620 72 495 85 585 80 550 80 550 80 585Over516 in. to38 in. 8 to 10 mm, incl 90 620 72 495 85 585 80 550 80 550 80 585Over38 in. to12 in. 10 to 12.5 mm, incl 90 620 72 495 85 585 80 550 80 550 80 585Over12 in. to34 in. 12.5 to 20 mm, incl 90 620 72 495 85 585 80 550 80 550 80 585Over34 in. to 1 in. 2

39、0 to 25 mm, incl . 72 495 85 585 80 550 80 550 80 550Over 1 in. to 114 in. 25 to 30 mm, incl . 72 495 85 585 . 80 550 80 550Over 114 in. to 2 in. 30 to 50 mm, incl . 72 495 85 585 . 80 550 80 550Over 2 in. to 4 in. 50 to 100 mm, incl . 65 450 75 515 . . .Over 4 in. 100 mm . 60 415 70 485 . . .Elonga

40、tion in 2 in. or 50 mm, min, %CD20 20 20 20 20 20NOTE: Where ellipses (.) appear in the table, there is no requirement.AFor plates wider than 24 in. 600 mm, the test specimen is taken in the transverse direction. See Specification A6/A6M, Tension Tests requirements.B0.2 % offset or 0.5 % extension-u

41、nder-load.CFor thickness of34 in. 20 mm and under, measured on 112 in. 40 mm wide full thickness rectangular specimen as shown in Fig. 4 of Test Methods and DefinitionsA370. The elongation is measured in a 2-in. 50-mm gage length which includes the fracture and which shows the greatest elongation.DF

42、or plates wider than 24 in. 600 mm, the elongation requirement is reduced two percentage points.A710/A710M 02 (2013)3ASTM 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

43、advised that determination 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, eit

44、her reapproved or withdrawn. 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

45、. 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 shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Ind

46、ividual 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/).A710/A710M 02 (2013)4