1、Designation: A351/A351M 13A351/A351M 13aStandard Specification forCastings, Austenitic, for Pressure-Containing Parts1This standard is issued under the fixed designation A351/A351M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, t
2、he 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 Department of Defense.1. Scope*1.1 This specification2 cover
3、s austenitic steel castings for valves, flanges, fittings, and other pressure-containing parts (Note 1).NOTE 1Carbon steel castings for pressure-containing parts are covered by Specification A216/A216M, low-alloy steel castings by SpecificationA217/A217M, and duplex stainless steel castings by Speci
4、fication A995/A995M.1.2 Anumber of grades of austenitic steel castings are included in this specification. Since these grades possess varying degreesof suitability for service at high temperatures or in corrosive environments, it is the responsibility of the purchaser to determinewhich grade shall b
5、e furnished. Selection will depend on design and service conditions, mechanical properties, andhigh-temperature or corrosion-resistant characteristics, or both.1.2.1 Because of thermal instability, Grades CE20N, CF3A, CF3MA, and CF8A are not recommended for service attemperatures above 800F 425C.1.3
6、 Supplementary requirements of an optional nature are provided for use at the option of the purchaser. The Supplementaryrequirements shall apply only when specified individually by the purchaser in the purchase order or contract.1.4 The values stated in either SI units or inch-pound units are to be
7、regarded separately as standard. The values stated in eachsystem may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from thetwo systems may result in non-conformance with the standard.1.4.1 This specification is expressed in both inch-poun
8、d units and in SI units; however, unless the purchase order or contractspecifies the applicable M specification designation (SI units), the inch-pound units shall apply. Within the text, the SI units areshown in brackets or parentheses.2. Referenced Documents2.1 ASTM Standards:3A216/A216M Specificat
9、ion for Steel Castings, Carbon, Suitable for Fusion Welding, for High-Temperature ServiceA217/A217M Specification for Steel Castings, Martensitic Stainless and Alloy, for Pressure-Containing Parts, Suitable forHigh-Temperature ServiceA488/A488M Practice for Steel Castings, Welding, Qualifications of
10、 Procedures and PersonnelA703/A703M Specification for Steel Castings, General Requirements, for Pressure-Containing PartsA985/A985M Specification for Steel Investment Castings General Requirements, for Pressure-Containing PartsA995/A995M Specification for Castings, Austenitic-Ferritic (Duplex) Stain
11、less Steel, for Pressure-Containing PartsE165 Practice for Liquid Penetrant Examination for General IndustryE709 Guide for Magnetic Particle Testing2.2 Manufacturers Standardization Society of the Valve and Fittings Industry Standard:4SP-55 Quality Standard for Steel Castings for Valves, Flanges, an
12、d Fittings and Other Components (Visual Method)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 edition approved May 1, 2013May 15, 2013. Published May 2013June 2
13、013. Originally approved in 1952. Last previous edition approved in 20122013 asA351/A351M 12b.A351/A351M 13. DOI: 10.1520/A0351_A0351M-13.10.1520/A0351_A0351M-13A.2 For ASME Boiler and Pressure Vessel Code applications, see related Specification SA-351/SA-351M in Section II of that code.3 For refere
14、ncedASTM 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 Available from Manufacturers Standardization Society of the Valve and F
15、ittings Industry (MSS), 127 Park St., NE, Vienna, VA 22180-4602, http:/www.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 adequa
16、tely depict all changes accurately, ASTM recommends that users consult prior 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 In
17、ternational, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States13. General Conditions for Delivery3.1 Other than investment castings Material furnished to this specification shall conform to the requirements of SpecificationA703/A703M, including any supplementary req
18、uirements that are indicated in the purchase order. Failure to comply with thegeneral requirements of Specification A703/A703M constitutes nonconformance with this specification. In case of conflict betweenthe requirements of this specification and Specification A703/A703M, this specification shall
19、prevail.3.2 Investment Castings Material furnished to this specification shall conform to the requirements of SpecificationA985/A985M, including any supplementary requirements that are indicated in the purchase order. Failure to comply with thegeneral requirements of Specification A985/A985M constit
20、utes nonconformance with this specification. In case of conflict betweenthe requirements of this specification and Specification A985/A985M, Specification A985/A985M shall prevail.3.3 The post weld heat treatment requirements of Supplementary Requirement S11 may be specified when austenitic castings
21、other than HK, HT, or CT15C are to be subjected to severe corrosive service.4. Ordering Information4.1 The inquiry and order should include or indicate the following:4.1.1 A description of the casting by pattern number or drawing (dimensional tolerances shall be included on the castingdrawing),4.1.2
22、 Grade of steel,4.1.3 Options in the specification, and4.1.4 Supplementary requirements desired, including the standards of acceptance.5. Process5.1 The steel shall be made by the electric furnace process with or without separate refining such as argon-oxygendecarburization (AOD).6. Heat Treatment6.
23、1 All castings shall receive a heat treatment at the temperature specified in Table 1, followed by a quench in water or rapidcool by other means except as noted.NOTE 2Proper heat treatment of these alloys is usually necessary to enhance corrosion resistance and in some cases to meet mechanical prope
24、rties.Minimum heat-treat temperatures are specified; however, it is sometimes necessary to heat-treat at higher temperatures, hold for some minimum time attemperature, and then rapidly cool the castings in order to enhance the corrosion resistance and meet mechanical properties.7. Chemical Compositi
25、on7.1 The steel shall conform to the requirements as to chemical composition prescribed in Table 2.8. Tensile Properties8.1 Steel used for the castings shall conform to the requirements as to tensile properties prescribed in Table 3.9. Quality9.1 The surface of the casting shall be examined visually
26、 and shall be free of adhering sand, scale, cracks, and hot tears. Othersurface discontinuities shall meet the visual acceptance standards specified in the order. Visual Method SP-55 or other visualTABLE 1 Heat-Treatment RequirementsGrade Temperature, minF CHK30, HK40, HT30, CT15C, HG10MNN as-cast a
27、s-castCF3, CF3A, CF8, CF8A, CF3M,CF3MA, CF8M, CF3MN, CG3M, CF10,CF10M, CG8M1900 1040CF10SMnN, CF8C, CF10MC 1950 1065CN7M, CG6MMN 2050 1120CK3MCuN, CN3MN, CH8, CH10, CH20,CK202100 1150CH8, CH10, CH20, CK20 2100 1150CK3MCuN, CN3MNB 2200 1200CE20NA 2225 1220A Grade shall be quenched in water or the cas
28、tings may be furnace cooled to2050F 1120C minimum, held for 15 min minimum and then quenched in wateror rapidly cooled by other means.BCastings of these grades shall be held at the specified temperature for a minimumof 4 hours.A351/A351M 13a2standards may be used to define acceptable surface discont
29、inuities and finish. Unacceptable visual surface discontinuities shall beremoved and their removal verified by visual examination of the resultant cavities.9.2 When additional inspection is desired, Supplementary Requirements S5, S6, and S10 may be ordered.9.3 The castings shall not be peened, plugg
30、ed, or impregnated to stop leaks.TABLE 2 Chemical RequirementsNOTE 1CE8MN and CD3MWCuN have been deleted from this specification and added to Specification A995/A995M as Grades 2A and 6Arespectively. CD4MCu has also been removed. Specification A995/A995M Grade 1B, CD4MCuN, is an acceptable substitut
31、e.Element, %(max, ex-cept whererange isgiven)CF3,CF3AJ92700CF8,CF8AJ92600CF3M,CF3MAJ92800CF8MJ92900 CF3MNJ92804CF8CJ92710CF10J92950 CF10MJ92901CH8J93400CH10J93401CH20J93402 CK20J94202 HG10MNNJ92604 HK30J94203 HK40J94204Carbon 0.03 0.08 0.03 0.08 0.03 0.08 0.04 0.04 0.08 0.04 0.04 0.04 0.07 0.25 0.35
32、0.10 0.10 0.10 0.20 0.20 0.11 0.35 0.45Manganese 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 3.0 1.50 1.505.0Silicon 2.00 2.00 1.50 1.50 1.50 2.00 2.00 1.50 1.50 2.00 2.00 1.75 0.70 1.75 1.75Sulfur 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.030 0.040 0.
33、040Phosphorus 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040Chromium 17.0 18.0 17.0 18.0 17.0 18.0 18.0 18.0 22.0 22.0 22.0 23.0 18.5 23.0 23.021.0 21.0 21.0 21.0 21.0 21.0 21.0 21.0 26.0 26.0 26.0 27.0 20.5 27.0 27.0Nickel 8.012.08.011.09.013.09.012.09.013
34、.09.012.08.011.09.012.012.015.012.015.012.015.019.022.011.513.519.022.019.022.0Molybde- 0.50 0.50 2.0 2.0 2.0 0.50 0.50 2.0 0.50 0.50 0.50 0.50 0.25 0.50 0.50num 3.0 3.0 3.0 3.0 0.45Columbium . . . . . . . . . . . . . . . A . . . . . . . . . . . . . . . . . . C . . . . . .(niobium)Vanadium . . . . .
35、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Nitrogen . . . . . . . . . . . . 0.10 . . . . . . . . . . . . . . . . . . . . . 0.20 . . . . . .0.20 0.30Copper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.50 . . . . . .Element, %(max, ex-c
36、ept whererange isgiven)HT30N08030 CF10MCCN7MN08007 CN3MNJ94651CG-6MMNJ93790CG8MJ93000CF10S-MnNJ92972CT15CN08151CK-3MCuNJ93254CE20NJ92802CG3MJ92999Carbon 0.25 0.10 0.07 0.03 0.06 0.08 0.10 0.05 0.025 0.20 0.030.35 max 0.15Manganese 2.00 1.50 1.50 2.00 4.00 1.50 7.00 0.15 1.20 1.50 1.50max 6.00 9.00 1
37、.50Silicon 2.50 1.50 1.50 1.00 1.00 1.50 3.50 0.50 1.00 1.50 1.50max 4.50 1.50Sulfur 0.040 0.040 0.040 0.010 0.030 0.04 0.030 0.03 0.010 0.040 0.04maxPhosphorus 0.040 0.040 0.040 0.040 0.040 0.04 0.060 0.03 0.045 0.040 0.04maxChromium 13.0 15.0 19.0 20.0 20.50 18.0 16.0 19.0 19.5 23.0 18.017.0 18.0
38、22.0 22.0 23.50 21.0 18.0 21.0 20.5 26.0 21.0Nickel 33.037.013.016.027.530.523.525.511.5013.509.013.08.09.031.034.017.519.58.011.09.013.0Molybde- 0.50 1.75 2.0 6.0 1.50 3.0 . . . . . . 6.0 0.50 3.0num 2.25 3.0 7.0 3.00 4.0 7.0 4.0Columbium . . . B . . . . . . 0.10 . . . . . . 0.50 . . . . . . . . .(
39、niobium) 0.30 1.50Vanadium . . . . . . . . . . . . 0.10 . . . . . . . . . . . . . . . . . .0.30Nitrogen . . . . . . . . . 0.18 0.20 . . . 0.08 . . . 0.18 0.08 . . .0.26 0.40 0.18 0.24 0.20Copper . . . . . . 3.04.00.75max. . . . . . . . . . . . 0.501.00. . . . . .A Grade CF8C shall have a columbium c
40、ontent of not less than 8 times the carbon content but not over 1.00 %.B Grade CF10MC shall have a columbium content of not less than 10 times the carbon content but not over 1.20 %.C Grade HG10MNN shall have a columbium content of not less than 8 times the carbon, but not over 1.00 %.A351/A351M 13a
41、310. Repair by Welding10.1 Repairs shall be made using procedures and welders qualified under Practice A488/A488M.10.2 Weld repairs shall be inspected to the same quality standards that are used to inspect the castings. When castings areproduced with Supplementary Requirement S5 specified, weld repa
42、irs on castings that have leaked on hydrostatic test, or oncastings in which the depth of any cavity prepared for repair welding exceeds 20 % of the wall thickness or 1 in. 25 mm,whichever is smaller, or on castings in which any cavity prepared for welding is greater than approximately 10 in.2 65 cm
43、2, shallbe radiographed to the same standards that are used to inspect the castings. When castings are produced with SupplementaryRequirement S6 specified, weld repairs shall be inspected by liquid penetrant examination to the same standards that are used toinspect the castings.10.3 For Grade HG10MN
44、N, the filler metal to be used shall be established by mutual agreement between the manufacturer andthe purchaser.NOTE 3When austenitic steel castings are to be used in services where they will be subject to stress corrosion, the purchaser should so indicate inhis order and such castings should be s
45、olution-heat treated following all weld repairs.11. Keywords11.1 austenitic stainless steel; pressure containing parts; stainless steel; steel castingsSUPPLEMENTARY REQUIREMENTSThe following supplementary requirements shall not apply unless specified in the purchase order.Alist of standardized suppl
46、ementary requirements for use at the option of the purchaser is included inSpecifications A703/A703M and A985/A985M. Those which are ordinarily considered suitable foruse with this specification are given below. Others enumerated in Specifications A703/A703M andA985/A985M may be used with this speci
47、fication upon agreement between the manufacturer andpurchaser.TABLE 3 Tensile RequirementsCF3J92700CF3AJ92700CF8J92600CF8AJ92600CF3MJ92800CF-3MAJ92800CF8MJ92900CF-3MNJ92804CF8CJ92710CF10J92950CF10MJ92901CH8J93400CH10J93401CH20J93402CK20J94202HG10MNNJ92604HK30J94203HK40J94204Tensile strength, 70 77 7
48、0 77 70 80 70 75 70 70 70 65 70 70 65 76 65 62min, ksi MPa 485 530 485 530 485 550 485 515 485 485 485 450 485 485 450 525 450 425Yield strength,A 30 35 30 35 30 37 30 37 30 30 30 28 30 30 28 33 35 35min, ksi MPa 205 240 205 240 205 255 205 255 205 205 205 195 205 205 195 225 240 240Elongation in2 i
49、n. or50 mm,Bmin, %35.0 35.0 35.0 35.0 30.0 30.0 30.0 35.0 30.0 35.0 30.0 30.0 30.0 30.0 30.0 20 10.0 10.0HT30N08030CF-10MCCN7MN08007CN-3MNJ94651CG6MMNJ93790CG8MJ93000CF10S-MnNJ92972CT15CN08151CK-3MCuNJ93254CE20NJ92802CG3MJ92999Tensile strength, 65 70 62 80 85 75 85 63 80 80 75min, ksi MPa 450 485 425 550 585 515 585 435 550 550 515Yield strength,A 28 30 25 38
