ASTM A487 A487M-1993(2003) Standard Specification for Steel Castings Suitable for Pressure Service.pdf

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1、Designation: A 487/A 487M 93 (Reapproved 2003)Standard Specification forSteel Castings Suitable for Pressure Service1This standard is issued under the fixed designationA487/A487M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the

2、 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.This standard has been approved for use by agencies of the Department of Defense.1. Scope1.1 This specification2covers l

3、ow-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 withadequate precautions, and the weldabili

4、ty 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 required mechanical properties are obtained

5、.1.3 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 equivalents; therefore, each system mustbe used independently of the other. Combining values from

6、thetwo systems may result in nonconformance with the specifi-cation. Inch-pound units are applicable for material ordered toSpecification A 487 and SI units for material ordered toSpecification A 487M.2. Referenced Documents2.1 ASTM Standards:A 370 Test Methods and Definitions for Mechanical Testing

7、of Steel Products3A 488/A 488M Practice for Steel Castings, Welding, Quali-fications of Procedures and Personnel4A 703/A 703M Specification for Steel Castings, GeneralRequirements, for Pressure-Containing Parts4E 165 Test Method for Liquid Penetrant Examination5E 709 Guide for Magnetic Particle Exam

8、ination52.2 American Society of Mechanical Engineers:ASME Boiler and Pressure Vessel Code, Section IX62.3 Manufacturers Standardization Society of the Valve andFittings Industry Standards:7SP-55 Quality Standard for Steel Castings-Visual Method3. General Conditions for Delivery3.1 Material furnished

9、 to this specification shall conform tothe requirements of SpecificationA 703/A 703M including anysupplementary requirements that are indicated in the purchaseorder. Failure to comply with the general requirements ofSpecification A 703/A 703M constitutes nonconformance withthis specification. In cas

10、e of conflict between the requirementsof this specification and Specification A 703/A 703M, thisspecification 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

11、shall be included on thecasting drawing),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 in

12、dicated inTable 1. Preliminary heat treatment 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 con

13、trolled by use of recording-type pyrometers.1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.18 on Castings.Current edition approved April 10, 2003. Published April 2003. Originallyappr

14、oved in 1963. Last previous edition approved in 1998 as A 487/A 487M 93(1998).2For ASME Boiler and Pressure Vessel Code applications see related Specifi-cations SA-487 in Section II of that code.3Annual Book of ASTM Standards, Vol 01.03.4Annual Book of ASTM Standards, Vol 01.02.5Annual Book of ASTM

15、Standards, Vol 03.03.6Available from American Society of Mechanical Engineers, Three Park Ave.,New York, NY 10016.7Available from Manufacturers Standardization Society of the Valve andFittings Industry, 127 Park St., N.E. Vienna, VA 22180.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box

16、C700, West Conshohocken, PA 19428-2959, United States.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 toleranceshown in Specification A 703/A 703M. Product analysis

17、 toler-ances for stainless grades are not presently applicable pendingdevelopment of these limits.7. Tensile Requirements 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 shall be

18、 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 finish.

19、 Unacceptable visual surface discon-tinuities shall be removed and their removal verified by visualexamination 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

20、 Table 4.8.2 The castings shall not be peened, plugged, or impreg-nated to stop leaks.9. 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 A 488/A 488M.TABLE 1 Hea

21、t Treat RequirementGrade ClassAustenitizingTemperature,min, F CMediaAQuenching CoolBelow F CTemperingTemperature,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

22、 260 1150 6204 A 1600 870 A or L 500 260 1100 5954 B 1600 870 L 500 260 1100 5954 C 1600 870 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 6

23、758 B 1750 955 L 500 260 1250 6758 C 1750 955 L 500 260 1250 6759 A 1600 870 A or L 500 260 1100 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 16

24、50 900 A 600 315 1100 59511 B 1650 900 L 600 315 1100 59512 A 1750 955 A 600 315 1100 59512 B 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

25、 B 1750 955 A or L 400 205 1100 595CA15 C 1750 955 A or L 400 205 1150 620DECA15 D 1750 955 A or L 400 205 1150 260DECA15M 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

26、temperature unless range is specified.CDouble austenitize.DDouble temper with the final temper at a lower temperature than the intermediate temper.EAir cool to below 200F 95C after first temper.FIntermediate.GFinal.A 487/A 487M 93 (2003)29.2 On castings intended for use under the ASME Boilerand Pres

27、sure Vessel Code, repairs shall be made 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 qual

28、itystandards as are used to inspect the castings. Reexaminationof the weld repair by radiography when Supplementary Re-quirement S 5 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

29、 castings which have leaked on hydro-static test.TABLE 2 Chemical Requirements (Maximum Percent Unless Range is Given)Grade 1. 2. 4. 6. 7. 8. 9. 10. 11. 12.ClassTypeABCVanadiumABCManganese-Molyb-denumABCDENickel-Chromium-MolybdenumABManganeseNickel-Chromium-MolybdenumANickel-Chromium-Molybdenum-Vana

30、diumAABCChromium-Molyb-denumABCDEChromium-Molyb-denumABNickel-Chromium-Molybde-numABNickel-Chromium-MolybdenumABNickel-Chromium-MolybdenumCarbon 0.30 0.30 0.30 0.050.38 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 to 1.00 0.50

31、0.80 0.400.70Phosphorus 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04Sulfur 0.045 0.045 0.045 0.045 0.045 0.045 0.045 0.045 0.045 0.045Silicon 0.80 0.80 0.80 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 . . . . . .

32、 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 0.450.65 0.901.20Vanadium 0.040.12 . . . . . . . . . 0.030.10 . . . . . . . . . . . . . . .Boron . . . . . . . . . . . . 0.0020.006 . . . . . . . .

33、. . . . . . .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 0.50Nickel 0.50 0.50 . . . . . . . . . . . . 0.50 . . . . . . . . .Chromium 0.35 0.35 . . . . . . . .Mo+W 0.25 . . . . . . . . .Tungsten . . . 0.10

34、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 0.60 1.00 0.60 0.50 0.50Grade 13. 14. 16 CA15 CA15M CA6NMClass TypeABNickel-MolybdenumANickel-MolybdenumALow CarbonManganese-Nickel(J31200)ABCDM

35、artensiticChromiumAMartensiticChromiumABMartensiticChromiumNickelCarbon 0.30 0.55 0.12B0.15 0.15 0.06Manganese 0.801.10 0.801.10 2.10B1.00 1.00 1.00Phosphorus 0.04 0.04 0.02 0.040 0.040 0.04Sulfur 0.045 0.045 0.02 0.040 0.040 0.03Silicon 0.60 0.60 0.50 1.50 0.65 1.00Nickel 1.401.75 1.401.75 1.001.40

36、 1.00 1.0 3.54.5Chromium . . . . . . . . . 11.514.0 11.514.0 11.514.0Molybdenum 0.200.30 0.200.30 . . . 0.50 0.151.0 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

37、 . . . . . . . . .Molybdenum . . . . . . 0.10 . . . . . . . . .Tungsten 0.10 0.10 0.10 0.10 0.10 0.10Vanadium 0.03 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 c

38、ontent, an increase of 0.04 % manganese above the specified maximum will be permitted up toa maximum of 2.30 %.A 487/A 487M 93 (2003)39.4.2 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

39、.9.4.3 Weld repairs on castings in which any cavity preparedfor welding is greater than approximately 10 in.265 cm2.10. Product Marking10.1 Castings shall be marked for material identificationwith the grade and class symbols (1-A, 4-C, CA15-A).11. Keywords11.1 alloy steel; martensitic stainless stee

40、l; pressure contain-ing parts; stainless steel; steel castingsTABLE 3 Required Mechanical PropertiesPreviousDesignationGrade ClassTensile Strength,Amin, ksi MPaYield Strength,min, ksi MPa,at 0.2 % OffsetElongation, 2 in.50 mm or 4d,min, %Reductionof Area,min %Hardnessmax, HRCHBMaxThickness,in. mm1N

41、1 A 85 585110 760 55 380 22 401Q1B 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 85 585 17 354 C 90 620 60 415 18 35 22 2354 D 100 690 75 5

42、15 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 60 415 18 359Q 9 B 105 725 85 585 16 359 C 90 620 60 415 18 3

43、5 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

44、 13 B 105 725130 895 85 585 17 3514Q 14 A 120 825145 1000 95 655 14 3016N 16 (J31200) A 70 48595 655 40 275 22 35CA15A CA15 A 140 965170 1170 110 760130 895 10 25CA15 CA15 B 90 620115 795 65 450 18 30CA15 C 90 620 60 415 18 35 22 235CA15 D 100 690 75 515 17 35 22 235CA15M CA15M A 90 620115 795 65 45

45、0 18 30CA6NM CA6NM A 110 760135 930 80 550 15 35CA6NM CA6NM B 100 690 75 515 17 35 23 255BAMinimum ksi, unless range is given.BTest Methods and Definitions A 370, Table 3a does not apply to CA6NM. The conversion given is based on CA6NM test coupons. (For example, see ASTM STP 756.8)A 487/A 487M 93 (

46、2003)4SUPPLEMENTARY REQUIREMENTSThe following supplementary requirements shall not apply unless specified in the purchase order.A list of standardized supplementary requirements for use at the option of the purchaser is includedin Specification A 703/A 703M. Those which are ordinarily considered sui

47、table for use with thisspecification are given below. Others enumerated in Specification A 703/AS1. Unspecified ElementsS4. Magnetic Particle InspectionS5. Radiographic InspectionS8. Charpy Impact TestS8.1 In addition to the requirements listed in S 8of Speci-fication A 703/A 703M, the following spe

48、cific requirementsapply to this specification:S8.1.1 When S 8 is specified for Grades 1B, 2B, 4B, 6B,7A, 8B, 9B, or 10B, impact properties shall be determined byperforming a Charpy V-notch impact test at 50F 46Cwith a specific minimum average value of 15 ft-lb 20 J and aspecified minimum single value of 10 ft-lb