1、Designation: A487/A487M 141Standard Specification forSteel Castings Suitable for Pressure Service1This standard is issued under the fixed designation A487/A487M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the year of last revi
2、sion. 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 the U.S. Department of Defense.1NOTETable 1 was corrected editorially in June 2017.1
3、. Scope*1.1 This specification2covers low-alloy steels and marten-sitic stainless steels in the normalized and tempered, orquenched and tempered, condition suitable for pressure-containing parts. The weldability of the classes in this speci-fication varies from readily weldable to weldable only with
4、adequate precautions, and the weldability of each class shouldbe considered prior to assembly by fusion welding.1.2 Selection will depend on design, mechanical, and ser-vice conditions. Users should note that hardenability of someof the grades mentioned may restrict the maximum size atwhich the requ
5、ired mechanical properties are obtained.1.3 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard. The values stated ineach system may not be exact equivalents; therefore, eachsystem shall be used independently of the other. Combiningvalues from the two sy
6、stems may result in non-conformancewith the standard.1.3.1 Within the text, the SI units are shown in brackets.1.4 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of I
7、nternational Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:3A370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA488/A488M Practice for Steel Castings, Welding, Q
8、ualifi-cations of Procedures and PersonnelA703/A703M Specification for Steel Castings, GeneralRequirements, for Pressure-Containing PartsA985/A985M Specification for Steel Investment CastingsGeneral Requirements, for Pressure-Containing PartsE165 Practice for Liquid Penetrant Examination for General
9、IndustryE709 Guide for Magnetic Particle Testing2.2 American Society of Mechanical Engineers:4ASME Boiler and Pressure Vessel Code, Section IX2.3 Manufacturers Standardization Society of the Valve andFittings Industry Standards:5SP-55 Quality Standard for Steel Castings-Visual Method3. General Condi
10、tions for Delivery3.1 Except for investment castings, castings furnished tothis specification shall conform to the requirements of Speci-fication A703/A703M including any supplementary require-ments that are indicated in the purchase order. Failure tocomply with the general requirements of Specifica
11、tion A703/A703M constitutes nonconformance with this specification. Incase of conflict between the requirements of this specificationand Specification A703/A703M, this specification shall pre-vail.3.2 Investment castings furnished to this specification shallconform to the requirements of Specificati
12、on A985/A985Mincluding any supplementary requirements that are indicated inthe purchase order. Failure to comply with the general require-ments of Specification A985/A985M constitutes nonconfor-mance with this specification. In case of conflict between the1This specification is under the jurisdictio
13、n of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.18 on Castings.Current edition approved March 1, 2014. Published March 2014. Originallyapproved in 1963. Last previous edition approved in 2012 as A487/A487M 93(2012). DOI: 10.1520
14、/A0487_A0487M-14E01.2For ASME Boiler and Pressure Vessel Code applications see related Specifi-cations SA-487 in Section II of that code.3For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume i
15、nformation, refer to the standards Document Summary page onthe ASTM website.4Available from American Society of Mechanical Engineers (ASME), ASMEInternational Headquarters, Two Park Ave., New York, NY 10016-5990, http:/www.asme.org.5Available from Manufacturers Standardization Society of the Valve a
16、nd FittingsIndustry (MSS), 127 Park St., NE, Vienna, VA 22180-4602, http:/www.mss-.*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 StatesThis international standard was develop
17、ed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.1requirements of this
18、specification and Specification A985/A985M, Specification A985/A985M shall prevail.4. Ordering Information4.1 The inquiry and order should include or indicate thefollowing:4.1.1 A description of the casting by pattern number ordrawing (dimensional tolerances shall be included on thecasting drawing),
19、4.1.2 ASTM designation and year of issue,4.1.3 Grade and class of steel,4.1.4 Options in the specification, and4.1.5 The supplementary requirements desired including thestandard of acceptance.5. Heat Treatment5.1 All castings shall receive a heat treatment indicated inTable 1. Preliminary heat treat
20、ment prior to final heat treatmentas well as multiple tempering is permitted.5.2 Heat treatment shall be performed after the castingshave been allowed to cool below the transformation range.5.3 The furnace temperature for heat treating shall beeffectively controlled by use of recording-type pyromete
21、rs.6. Chemical Composition6.1 The steel shall conform to the requirements as tochemical composition prescribed in Table 2. Product analysistolerance shall conform to the product analysis toleranceTABLE 1 Heat Treat RequirementGrade ClassAustenitizingTemperature,min, F CMediaAQuenching CoolBelow F CT
22、emperingTemperature,F CB1 A 1600 870 A 450 230 1100 5951 B 1600 870 L 500 260 1100 5951 C 1600 870 A or L 500 260 1150 6202 A 1600 870 A 450 230 1100 5952 B 1600 870 L 500 260 1100 5952 C 1600 870 A or L 500 260 1150 6204 A 1600 870 A or L 500 260 1100 5954 B 1600 870 L 500 260 1100 5954 C 1600 870
23、A or L 500 260 1150 6204 D 1600 870 L 500 260 1150 6204 E 1600 870 L 500 260 1100 5956 A 1550 845 A 500 260 1100 5956 B 1550 845 L 500 260 1100 5957 A 1650 900 L 600 315 1100 5958 A 1750 955 A 500 260 1250 6758 B 1750 955 L 500 260 1250 6758 C 1750 955 L 500 260 1250 6759 A 1600 870 A or L 500 260 1
24、100 5959 B 1600 870 L 500 260 1100 5959 C 1600 870 A or L 500 260 1150 6209 D 1600 870 L 500 260 1150 6209 E 1600 870 L 500 260 1100 59510 A 1550 845 A 500 260 1100 59510 B 1550 845 L 500 260 1100 59511 A 1650 900 A 600 315 1100 59511 B 1650 900 L 600 315 1100 59512 A 1750 955 A 600 315 1100 59512 B
25、 1750 955 L 400 205 1100 59513 A 1550 845 A 500 260 1100 59513 B 1550 845 L 500 260 1100 59514 A 1550 845 L 500 260 1100 59516 (J31200) A 1600 870CA 600 315 1100 595CA15 A 1750 955 A or L 400 205 900 480CA15 B 1750 955 A or L 400 205 1100 595CA15 C 1750 955 A or L 400 205 1150 620DECA15 D 1750 955 A
26、 or L 400 205 1150 620DECA15M A 1750 955 A or L 400 205 1100 595CA6NM A 1850 1010 A or L 200 95 10501150 565620CA6NM B 1850 1010 A or L 200 95 12251275 665690E,F10501150 565620GAA = air, L = Liquid.BMinimum temperature unless range is specified.CDouble austenitize.DDouble temper with the final tempe
27、r at a lower temperature than the intermediate temper.EAir cool to below 200F 95C after first temper.FIntermediate.GFinal.A487/A487M 1412shown in Specification A703/A703M. For investment castings,the product analysis tolerance shall conform to the productanalysis tolerance shown in Specification A98
28、5/A985M. Prod-uct analysis tolerances for stainless grades are not presentlyapplicable pending development of these limits.7. Tensile Requirements7.1 Tensile properties of steel used for the castings shallconform to the requirements prescribed in Table 3.8. Quality8.1 The surface of the casting shal
29、l be free of adhering sand,scale, cracks, and hot tears as determined by visual examina-tion. Other surface discontinuities shall meet the visual accep-tance standards specified in the order. Visual Method SP-55 orother visual standards may be used to define acceptable surfacediscontinuities and fin
30、ish. Unacceptable visual surface discon-tinuities shall be removed and their removal verified by visualTABLE 2 Chemical Requirements (Maximum Percent Unless Range is Given)Grade 1. 2. 4. 6. 7. 8. 9. 10. 11. 12.ClassTypeABCVanadium(J13002)ABCManganese-Molyb-denum(J13005)ABCDENickel-Chromium-Molybdenu
31、m(J13047)ABManganeseNickel-Chromium-Molybdenum(J13855)ANickel-Chromium-Molybdenum-VanadiumA(J12084)ABCChromium-Molyb-denum(J22091)ABCDEChromium-Molyb-denum(J13345)ABNickel-Chromium-Molybde-num(J23015)ABNickel-Chromium-Molybdenum(J12082)ABNickel-Chromium-Molybdenum(J22000)Carbon 0.30 0.30 0.30 0.050.
32、38 0.050.20 0.050.20 0.050.33 0.30 0.050.20 0.050.20Manganese 1.00 1.001.40 1.00 1.301.70 0.601.00 0.500.90 0.601.00 0.60 to1.000.500.80 0.400.70Phosphorus 0.035 0.035 0.035 0.035 0.035 0.035 0.035 0.035 0.035 0.035Sulfur 0.035 0.035 0.035 0.035 0.035 0.035 0.035 0.035 0.035 0.035Silicon 0.80 0.80 0
33、.80 0.80 0.80 0.80 0.80 0.80 0.60 0.60Nickel . . . . . . 0.400.80 0.400.80 0.701.00 . . . . . . 1.402.00 0.701.10 0.601.00Chromium . . . . . . 0.400.80 0.400.80 0.400.80 2.002.75 0.751.10 0.550.90 0.500.80 0.500.90Molybdenum . . . 0.100.30 0.150.30 0.300.40 0.400.60 0.901.10 0.150.30 0.200.40 0.450.
34、65 0.901.20Vanadium 0.040.12 . . . . . . . . . 0.030.10 . . . . . . . . . . . . . . .Boron . . . . . . . . . . . . 0.0020.006 . . . . . . . . . . . . . . .Copper . . . . . . . . . . . . 0.150.50 . . . . . . . . . . . . . . .Residual Elements:Copper 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50Ni
35、ckel 0.50 0.50 . . . . . . . . . . . . 0.50 . . . . . . . . .Chromium 0.35 0.35 . . . . . . . .Mo+W 0.25 . . . . . . . . .Tungsten . . . 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10Vanadium . . . 0.03 0.03 0.03 . . . 0.03 0.03 0.03 0.03 0.03Total content ofresidualelements1.00 1.00 0.60 0.60 0.60 0.
36、60 1.00 0.60 0.50 0.50Grade 13. 14. 16 CA15 CA15M CA6NMClass TypeABNickel-Molybdenum(J13080)ANickel-Molybdenum(J15580)ALow CarbonManganese-Nickel(J31200)ABCDMartensiticChromium(J91150)AMartensiticChromium(J91151)ABMartensiticChromiumNickel(J91540)Carbon 0.30 0.55 0.12B0.15 0.15 0.06Manganese 0.801.1
37、0 0.801.10 2.10B1.00 1.00 1.00Phosphorus 0.035 0.035 0.02 0.035 0.035 0.035Sulfur 0.035 0.035 0.02 0.035 0.035 0.03Silicon 0.60 0.60 0.50 1.50 0.65 1.00Nickel 1.401.75 1.401.75 1.001.40 1.00 1.0 3.54.5Chromium . . . . . . . . . 11.514.0 11.514.0 11.514.0Molybdenum 0.200.30 0.200.30 . . . 0.50 0.151.
38、0 0.41.0Boron . . . . . .Copper . . . . . . . . . . . . . . . . . .Residual ElementsCopper 0.50 0.50 0.20 0.50 0.50 0.50Nickel . . . . . . . . . . . . . . . . . .Chromium 0.40 0.40 0.20 . . . . . . . . .Molybdenum . . . . . . 0.10 . . . . . . . . .Tungsten 0.10 0.10 0.10 0.10 0.10 0.10Vanadium 0.03
39、0.03 0.02 0.05 0.05 0.05Total content of residual elements 0.75 0.75 0.50 0.50 0.50 0.50AProprietary steel composition.BFor each reduction of 0.01 % below the specified maximum carbon content, an increase of 0.04 % manganese above the specified maximum will be permitted up toamaximum of 2.30 %.A487/
40、A487M 1413examination of the resultant cavities. When methods involvinghigh temperatures are used in the removal and repair ofdiscontinuities, the casting shall be preheated to at least theminimum temperature in Table 4.8.2 The castings shall not be peened, plugged, or impreg-nated to stop leaks.9.
41、Repair By Welding9.1 For castings, other than those intended for use underASME Boiler and Pressure Vessel Code, repairs shall be madeusing procedures and welders qualified under Practice A488/A488M.9.2 On castings intended for use under the ASME Boilerand Pressure Vessel Code, repairs shall be made
42、by proceduresand welders qualified under Section IX of that code.9.3 After repair welding, all castings shall be postweld heattreated in accordance with Table 4 or reheat treated inaccordance with Table 1.9.4 Weld repairs shall be inspected using the same qualitystandards as are used to inspect the
43、castings. Reexaminationof the weld repair by radiography when Supplementary Re-quirement S5 has been specified will not be necessary when anapplicable surface inspection method was used to locate thediscontinuity except for the following:9.4.1 Weld repairs on castings which have leaked on hydro-stat
44、ic test.9.4.2 Weld repairs on castings in which the depth of anycavity prepared for repair welding is more than 20 % of thewall thickness or 1 in. 25 mm, whichever is smaller.9.4.3 Weld repairs on castings in which any cavity preparedfor welding is greater than approximately 10 in.265 cm2.10. Produc
45、t Marking10.1 Castings shall be marked for material identificationwith the grade and class symbols (1-A, 4-C, CA15-A).TABLE 3 Required Mechanical PropertiesPreviousDesignationGrade ClassTensile Strength,Amin, ksi MPaYield Strength,min, ksi MPa,at 0.2 % OffsetElongation, 2 in.50 mm or 4d,min, %Reduct
46、ionof Area,min %Hardnessmax, HRCHBMaxThickness,in. mm1N 1 A 85 585110 760 55 380 22 401Q 1 B 90 620115 795 65 450 22 451 C 90 620 65 450 22 45 22 2352N 2 A 85 585110 760 53 365 22 352Q 2 B 90 620115 795 65 450 22 402 C 90 620 65 450 22 40 22 2354N 4 A 90 620115 795 60 415 18 404Q 4 B 105 725130 895
47、85 585 17 354 C 90 620 60 415 18 35 22 2354 D 100 690 75 515 17 35 22 2354QA 4 E 115 795 95 655 15 356N 6 A 115 795 80 550 18 306Q 6 B 120 825 95 655 12 257Q 7 A 115 795 100 690 15 30 2.5 63.58N 8 A 85 585110 760 55 380 20 358Q 8 B 105 725 85 585 17 308 C 100 690 75 515 17 35 22 2359N 9 A 90 620 60
48、415 18 359Q 9 B 105 725 85 585 16 359 C 90 620 60 415 18 35 22 2359 D 100 690 75 515 17 35 22 2359 E 115 795 95 655 15 3510N 10 A 100 690 70 485 18 3510Q 10 B 125 860 100 690 15 3511N 11 A 70 48495 655 40 275 20 3511Q 11 B 105 725130 895 85 585 17 3512N 12 A 70 48595 655 40 275 20 3512Q 12 B 105 725130 895 85 585 17 3513N 13 A 90 620115 795 60 415 18 3513Q 13 B 105 725130 8
