1、Designation: A487/A487M 93 (Reapproved 2012)A487/A487M 14Standard 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 r
2、evision, 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 the U.S. Department of Defense.1. Scope Scope*1.1 This
3、 specification2 covers low-alloy steels and martensitic stainless steels in the normalized and tempered, or quenched andtempered, condition suitable for pressure-containing parts. The weldability of the classes in this specification varies from readilyweldable to weldable only with adequate precauti
4、ons, and the weldability of each class should be considered prior to assembly byfusion welding.1.2 Selection will depend on design, mechanical, and service conditions. Users should note that hardenability of some of thegrades mentioned may restrict the maximum size at which the required mechanical p
5、roperties are obtained.1.3 The values stated in either inch-poundSI units or SIinch-pound units are to be regarded separately as standard. Within thetext, the SI units are shown in brackets. The values stated in each system aremay not be exact equivalents; therefore, each systemmustshall be used ind
6、ependently of the other. Combining values from the two systems may result in nonconformance with thespecification. Inch-pound units are applicable for material ordered to Specification non-conformance with the standard.A487 andSI units for material ordered to Specification A487M.1.3.1 Within the tex
7、t, the SI units are shown in brackets.2. Referenced Documents2.1 ASTM Standards:3A370 Test Methods and Definitions for Mechanical Testing of Steel ProductsA488/A488M Practice for Steel Castings, Welding, Qualifications of Procedures and PersonnelA703/A703M Specification for Steel Castings, General R
8、equirements, for Pressure-Containing PartsA985/A985M Specification for Steel Investment Castings General Requirements, for Pressure-Containing PartsE165 Practice for Liquid Penetrant Examination for General IndustryE709 Guide for Magnetic Particle Testing2.2 American Society of Mechanical Engineers:
9、4ASME Boiler and Pressure Vessel Code, Section IX2.3 Manufacturers Standardization Society of the Valve and Fittings Industry Standards:5SP-55 Quality Standard for Steel Castings-Visual Method3. General Conditions for Delivery3.1 Material Except for investment castings, castings furnished to this sp
10、ecification shall conform to the requirements ofSpecification A703/A703M including any supplementary requirements that are indicated in the purchase order. Failure to complywith the general requirements of Specification A703/A703M constitutes nonconformance with this specification. In case of confli
11、ctbetween the requirements of this specification and Specification A703/A703M, this specification shall prevail.1 This specification is under the jurisdiction ofASTM Committee A01 on Steel, Stainless Steel and RelatedAlloys and is the direct responsibility of Subcommittee A01.18on Castings.Current e
12、dition approved March 1, 2012March 1, 2014. Published April 2012March 2014. Originally approved in 1963. Last previous edition approved in 20072012 asA487/A487M 93 (2007).(2012). DOI: 10.1520/A0487_A0487M-93R12.10.1520/A0487_A0487M-14.2 For ASME Boiler and Pressure Vessel Code applications see relat
13、ed Specifications SA-487 in Section II of that code.3 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.4 Availab
14、le from American Society of Mechanical Engineers (ASME), ASME International Headquarters, ThreeTwo Park Ave., New York, NY 10016-5990,http:/www.asme.org.5 Available from Manufacturers Standardization Society of the Valve and Fittings Industry (MSS), 127 Park St., NE, Vienna, VA 22180-4602, http:/www
15、.mss-.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult pri
16、or editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 194
17、28-2959. United States13.2 Investment castings furnished to this specification shall conform to the requirements of Specification A985/A985Mincluding any supplementary requirements that are indicated in the purchase order. Failure to comply with the general requirementsof Specification A985/A985M co
18、nstitutes nonconformance with this specification. In case of conflict between the requirements ofthis specification and Specification A985/A985M, Specification A985/A985M shall prevail.4. Ordering Information4.1 The inquiry and order should include or indicate the following:4.1.1 A description of th
19、e casting by pattern number or drawing (dimensional tolerances shall be included on the castingdrawing),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 the standard of acceptance.5.
20、Heat Treatment5.1 All castings shall receive a heat treatment indicated in Table 1. Preliminary heat treatment prior to final heat treatment asTABLE 1 Heat Treat RequirementGrade ClassAustenitizingTemperature,min, F CMediaA Quenching CoolBelow F CTemperingTemperature,F CB1 A 1600 870 A 450 230 1100
21、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 A or L 500 260 1150 6204 D 1600 870 L 500 260 1150 6
22、204 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 1100 5959 B 1600 870 L 500 260 1100 5959 C 1600 870 A
23、 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 1750 955 L 400 205 1100 59513 A 1550 845 A 500 260
24、1100 59513 B 1550 845 L 500 260 1100 59514 A 1550 845 L 500 260 1100 59516 (J31200) A 1600 870C A 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 or L 400 205 1150 260DECA15M A 1750 955 A or L 400
25、 205 1100 595CA6NM A 1850 1010 A or L 200 95 10501150 565620CA6NM B 1850 1010 A or L 200 95 12251275 665690E,F10501150 565620GA A = air, L = Liquid.B Minimum temperature unless range is specified.C Double austenitize.D Double temper with the final temper at a lower temperature than the intermediate
26、temper.E Air cool to below 200F 95C after first temper.F Intermediate.G Final.A487/A487M 142well as multiple tempering is permitted.5.2 Heat treatment shall be performed after the castings have been allowed to cool below the transformation range.5.3 The furnace temperature for heat treating shall be
27、 effectively controlled by use of recording-type pyrometers.6. Chemical Composition6.1 The steel shall conform to the requirements as to chemical composition prescribed in Table 2. Product analysis toleranceTABLE 2 Chemical Requirements (Maximum Percent Unless Range is Given)colwidth=“0.55in“/COLSPE
28、CGrade 1. 2. 4. 6. 7. 8. 9. 10. 11. 12.ClassTypeABCVanadium(J13002)ABCManganese-Molyb-denum(J13005)ABCDENickel-Chromium-Molybdenum(J13047)ABManganeseNickel-Chromium-Molybdenum(J13855)ANickel-Chromium-Molybdenum-VanadiumA(J12084)ABCChromium-Molyb-denum(J22091)ABCDEChromium-Molyb-denum(J13345)ABNickel
29、-Chromium-Molybde-num(J23015)ABNickel-Chromium-Molybdenum(J12082)ABNickel-Chromium-Molybdenum(J22000)Carbon 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 0.500.80 0.400.70Phosphorus 0.04 0.04 0.0
30、4 0.04 0.04 0.04 0.04 0.04 0.04 0.04Phosphorus 0.035 0.035 0.035 0.035 0.035 0.035 0.035 0.035 0.035 0.035Sulfur 0.045 0.045 0.045 0.045 0.045 0.045 0.045 0.045 0.045 0.045Sulfur 0.035 0.035 0.035 0.035 0.035 0.035 0.035 0.035 0.035 0.035Silicon 0.80 0.80 0.80 0.80 0.80 0.80 0.80 0.80 0.60 0.60Nicke
31、l . . . . . . 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 0.450.65 0.901.20Vanadium 0.040.12 . . . . . . .
32、. . 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 0.50Nickel 0.50 0.50 . . . . . . . . . . . . 0.50
33、 . . . . . . . . .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 ofresidualelements
34、1.00 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-Molybdenum(J13080)ANickel-Molybdenum(J15580)ALow CarbonManganese-Nickel(J31200)ABCDMartensiticChromium(J91150)AMartensiticChromium(J91151)ABMartensiticChromiumNickel(J91540)Carbon 0.30 0.55 0.12B 0.1
35、5 0.15 0.06Manganese 0.801.10 0.801.10 2.10B 1.00 1.00 1.00Phosphorus 0.04 0.04 0.02 0.040 0.040 0.04Phosphorus 0.035 0.035 0.02 0.035 0.035 0.035Sulfur 0.045 0.045 0.02 0.040 0.040 0.03Sulfur 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 1.0
36、0 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 . . . . . . . . . . . . . . . . . .Chr
37、omium 0.40 0.40 0.20 . . . . . . . . .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 0.50A Proprietary steel composition.B For each reduction of 0.01 % below the spec
38、ified maximum carbon content, an increase of 0.04 % manganese above the specified maximum will be permitted up to amaximum of 2.30 %.A487/A487M 143shall conform to the product analysis tolerance shown in Specification A703/A703M. For investment castings, the product analysistolerance shall conform t
39、o the product analysis tolerance shown in Specification A985/A985M. Product analysis tolerances forstainless grades are not presently applicable pending development of these limits.7. Tensile Requirements7.1 Tensile properties of steel used for the castings shall conform to the requirements prescrib
40、ed in Table 3.8. Quality8.1 The surface of the casting shall be free of adhering sand, scale, cracks, and hot tears as determined by visual examination.Other surface discontinuities shall meet the visual acceptance standards specified in the order. Visual Method SP-55 or other visualstandards may be
41、 used to define acceptable surface discontinuities and finish. Unacceptable visual surface discontinuities shall beremoved and their removal verified by visual examination of the resultant cavities. When methods involving high temperatures areused in the removal and repair of discontinuities, the ca
42、sting shall be preheated to at least the minimum temperature in Table 4.8.2 The castings shall not be peened, plugged, or impregnated to stop leaks.9. Repair By Welding9.1 For castings, other than those intended for use under ASME Boiler and Pressure Vessel Code, repairs shall be made usingprocedure
43、s and welders qualified under Practice A488/A488M.TABLE 3 Required Mechanical PropertiesPreviousDesignation Grade 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 1 A 85 5851
44、10 760 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 85 585 17 354 C 90 620 60 415 18 35 22 2354 D 100 690 75 515 17 35
45、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 35 22 2359
46、 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
47、 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 65 450 18 30CA
48、6NM CA6NM A 110 760135 930 80 550 15 35CA6NM CA6NM B 100 690 75 515 17 35 23 255BA Minimum ksi, unless range is given.B Test Methods and Definitions A370, Table 3a does not apply to CA6NM. The conversion given is based on CA6NM test coupons. (For example, see ASTM STP 756.8)A487/A487M 1449.2 On castings intended for
