1、Designation: A560/A560M 12 (Reapproved 2018)Standard Specification forCastings, Chromium-Nickel Alloy1This standard is issued under the fixed designation A560/A560M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the year of last
2、revision. A number in parentheses indicates the year of last reapproval.A superscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification covers chromium-nickel alloy cast-ings intended for heat-resisting and elevated-temperature cor-rosion
3、applications, such as structural members, containers,supports, hangers, spacers, and the like, in corrosive environ-ments up to 2000 F 1090 C.1.2 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 equiva
4、lents; therefore, eachsystem shall be used independently of the other. Combiningvalues from the two systems may result in nonconformancewith this standard.1.3 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the De
5、cision on Principles for theDevelopment of International Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2A781/A781M Specification for Castings, Steel and Alloy,Common Requirements, for
6、 General Industrial UseA957/A957M Specification for Investment Castings, Steeland Alloy, Common Requirements, for General IndustrialUse3. General Conditions for Delivery3.1 Except for steel investment castings, material furnishedto this specification shall conform to the requirements ofSpecification
7、 A781/A781M, including any supplementary re-quirements that are indicated in the purchase order. Failure tocomply with the general requirements of Specification A781/A781M constitutes nonconformance with this specification. Incase of conflict between the requirements of this specificationand Specifi
8、cation A781/A781M, this specification shall pre-vail.3.2 Steel investment castings furnished to this specificationshall conform to the requirements of Specification A957/A957M, including any supplementary requirements that areindicated in the purchase order. Failure to comply with thegeneral require
9、ments of Specification A957/A957M consti-tutes nonconformance with this specification. In case of con-flict with this specification and Specification A957/A957M,A957/A957M shall prevail.4. Ordering Information4.1 Orders for material under this specification shouldinclude the following information in
10、 proper sequence:4.1.1 Quantity;4.1.2 Specification and grade (50 Cr-50 Ni, R20500; 60 Cr-40 Ni, R20600; 50 Cr-50 Ni-Cb, R20501);4.1.3 Description of the casting by pattern number ordrawing;4.1.4 Options in the specification:4.1.4.1 Process,4.1.4.2 Heat treatment,4.1.4.3 Tensile properties,4.1.4.4 T
11、ension tests,4.1.4.5 Charpy impact tests, and4.1.4.6 Test specimens or test bars.4.1.5 Supplementary requirements desired, including stan-dards of acceptance.5. Materials and Manufacture5.1 ProcessThe alloy for the castings shall be made by theelectric arc or induction furnace process unless otherwi
12、seagreed upon between the manufacturer and the purchaser.Castings may be poured in sand, shell, investment, or centrifu-gal molds.5.2 Heat TreatmentCastings may be shipped in the as-castcondition. If heat treatment is required, the treatment shall beestablished by mutual consent between the manufact
13、urer andpurchaser and shall be so specified in the inquiry, purchaseorder, or contract.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 March 1,
14、2018. Published March 2018. Originallyapproved in 1966. Last previous edition approved in 2012 as A560/A560M 12.DOI: 10.1520/A0560_A0560M-12R18.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards v
15、olume information, refer to the standards Document Summary page 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 StatesThis international standard was develop
16、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.16. Chemical Compositi
17、on6.1 The castings shall conform to the requirements as tochemical composition prescribed in Table 1.7. Tensile Properties7.1 Tensile properties, if required, of the alloy used for thecastings shall conform to the requirements prescribed in Table2.8. Test Specimens8.1 Test bars shall be poured in sp
18、ecial blocks from thesame heat as the castings represented. Test bars, if required,shall be furnished in sufficient number to furnish specimens forthe test required in Section 9.8.2 The test coupons shall be cast from the same melt fromwhich the castings they represent are poured, and shall repre-se
19、nt the full melting practice. Chemical composition of the testcoupons shall conform to the requirements prescribed in Table1.8.3 Impact test specimens are to be broken unnotched.9. Number of Tests and Retests9.1 Tension TestOne tension test, if required, shall bemade from each melt.9.2 Impact TestOn
20、e unnotched Charpy impact test, ifrequired, shall be made from each melt.9.3 Retests:9.3.1 Retest of a duplicate specimen will be allowed if theresults of the mechanical tests for any lot do not conform to therequirements specified in Table 2.9.3.2 If the percentage of elongation of any tension test
21、specimen is less than specified in Table 2 and any part of thefracture is more than34 in. 19.0 mm from the center of thegage length, as indicated by scribe scratches marked on thespecimen before testing, a retest shall be allowed.10. Keywords10.1 chromium-nickel alloys; corrosion; high-temperatureap
22、plications; investment castings; steel castingsSUPPLEMENTARY REQUIREMENTSThe following supplementary requirements shall not apply unless specified in the purchase order. Alist of standardized supplementary requirements for use at the option of the purchaser is included inSpecifications A781/A781M an
23、d A957/A957M. Those that are ordinarily considered suitable for usewith this specification are given below. Others enumerated in Specifications A781/A781M andA957/A957M may be used with this specification upon agreement between the manufacturer and thepurchaser.S2. Radiographic ExaminationS3. Liquid
24、 Penetrant ExaminationS8. MarkingTABLE 1 Chemical RequirementsA,BElementComposition, %Grade50 Cr-50 Ni(R20500)60 Cr-40 Ni(R20600)50 Cr-50 Ni-Cb(R20501)Carbon 0.10 0.10 0.10Manganese 0.30 0.30 0.30Silicon 1.00 1.00 0.50Sulfur 0.02 0.02 0.02Phosphorus 0.02 0.02 0.02Nitrogen 0.30 0.30 0.16Nitrogen + Ca
25、rbon . . . . . . 0.20Iron 1.00 1.00 1.00Titanium 0.50 0.50 0.50Aluminum 0.25 0.25 0.25Columbium . . . . . . 1.41.7Chromium 48.052.0 58.062.0 47.052.0Nickel balance balance balanceAThe total of the nickel, chromium, and columbium contents must exceed 97.5 %.BAll values are maximum, unless a range or
26、minimum is indicated. Where ellipsesappear (.) in this table, there is no minimum and analysis for the element need notbe determined or reported.TABLE 2 Room Temperature Tensile and Charpy RequirementsA50 Cr-50 Ni 60 Cr-40 Ni 50 Cr-50 Ni-CbTensile strength, min, ksi MPa 80 550 110 760 80 550Yield po
27、int, min, ksi MPa 50 340 85 590 50 345Elongation in 2 in. 50 mm,min, %5.0 . . . 5.0Impact, unnotched, Charpy, min,ftlbf J50 78 10 14 . . .AWhere ellipses (.) appear in this table, there is no requirement.A560/A560M 12 (2018)2SUMMARY OF CHANGESCommittee A01 has identified the location of selected cha
28、nges to this standard since the last issue(A560/A560M 11) that may impact the use of this standard. (Approved Nov. 1, 2012.)(1) Editorially revised 1.2.(2) Revised sections/subsections 2, 3, 7.2 (deleted), 8, and 10and introductory paragraph to Supplementary Requirements toreference investment casti
29、ngs and to delete references to A370.(3) Revised Section 4 and Table 1.ASTM 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 advised that determination of the validity of
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32、ived 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. Individual reprints (single or multiple copies) o
33、f 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 Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 12 (2018)3
