1、Designation: A 560/A 560M 05Standard Specification forCastings, Chromium-Nickel Alloy1This standard is issued under the fixed designation A 560/A 560M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the year of last revision. A nu
2、mber in parentheses indicates the year of last reapproval.A superscript epsilon (e) 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 applications,
3、 such as structural members, containers,supports, hangers, spacers, and the like, in corrosive environ-ments up to 2000F 1090C.1.2 The values stated in either inch-pound units or SI unitsare to be regarded separately as standard. Within the test, the SIunits are shown in brackets. The values stated
4、in each systemare not exact equivalents; therefore, each system must be usedindependently of the other. Combining values from the twosystems may result in nonconformance with the specification.2. Referenced Documents2.1 ASTM Standards:2A 370 Test Methods and Definitions for Mechanical Testingof Stee
5、l ProductsA 781/A 781M Specification for Castings, Steel and Alloy,Common Requirements, for General Industrial Use3. General Conditions for Delivery3.1 Material furnished to this specification shall conform tothe requirements of Specification A 781/A 781M, includingany supplementary requirements tha
6、t are indicated in thepurchase order. Failure to comply with the general require-ments of Specification A 781/A 781M constitutes nonconfor-mance with this specification. In case of conflict between therequirements of this specification and Specification A 781/A 781M, this specification shall prevail
7、.4. Ordering Information4.1 The purchaser should specify the alloy grade desiredand whether tension tests are required, and shall includestandards of acceptance where necessary.5. Materials and Manufacture5.1 ProcessThe alloy for the castings shall be made by theelectric-arc or induction-furnace pro
8、cess unless otherwiseagreed 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 b
9、etween the manufacturer andpurchaser and shall be so specified in the inquiry, purchaseorder, or contract.6. Chemical Composition6.1 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 u
10、sed for thecastings shall conform to the requirements prescribed in Table2.7.2 Tension tests, if required, shall be performed in accor-dance with Test Methods and Definitions A 370.8. Test Specimens8.1 Test specimens, if required, shall be prepared in accor-dance with Test Methods and Definitions A
11、370. Test bars shallbe poured in special blocks from the same heat as the castingsrepresented. Test bars, if required, shall be furnished insufficient number to furnish specimens for the test required inSection 9.8.2 The test coupons shall be cast from the same melt fromwhich the castings they repre
12、sent are poured, and shall repre-sent the full melting practice. Chemical composition of the testcoupons shall conform to the requirements prescribed in Table1.8.3 Tension test specimens shall be machined to the formand dimensions of the standard round 2-in. 50-mm gagelength specimen shown in Fig. 4
13、 of Test Methods and Defini-tions A 370.1This 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 May 1, 2005. Published May 2005. Originallyapproved in
14、1966. Last previous edition approved in 1998 as A 560 93(1998).2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM websit
15、e.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.8.4 Impact test specimens shall conform to the length andcross section dimensions of the specimens shown in Fig. 10 o
16、fTest Methods and DefinitionsA 370. The impact specimens areto be broken unnotched.9. Number of Tests and Retests9.1 Tension TestOne tension test, if required, shall bemade from each melt.9.2 Impact TestOne unnotched Charpy impact test, ifrequired, shall be made from each melt.9.3 Retests:9.3.1 Rete
17、st 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 testspecimen is less than specified in Table 2 and any part of thefracture is more than34 in. 19.0
18、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 temperatureapplications; steel castingsSUPPLEMENTARY REQUIREMENTSThe following supplementary requirements sh
19、all not apply unless specified in the purchase order. Alist of standardized supplementary requirements for use at the option of the purchaser is included inSpecification A 781/A 781M. Those which are ordinarily considered suitable for use with thisspecification are given below. Others enumerated in
20、Specification A 781/A 781M may be used withthis specification upon agreement between the manufacturer and the purchaser.S2. Radiographic ExaminationS3. Liquid Penetrant ExaminationS8. MarkingSUMMARY OF CHANGESCommittee A01 has identified the location of selected changes to this standard since the la
21、st issue,A 560/A 560M - 93(1998), that may impact the use of this standard. (Approved May 1, 2005.)(1) Added UNS numbers for 50 Cr-50 Ni and 60 Cr-40 Ni inTable 1.(2) Deleted UNS number for 50 Cr-50 Ni-Cb in Table 2.TABLE 1 Chemical RequirementsAElement Composition, %Grade50 Cr-50 Ni(R20500)60 Cr-40
22、 Ni(R20600)50 Cr-50 Ni-Cb(R20501)Carbon, max 0.10 0.10 0.10Manganese, max 0.30 0.30 0.30Silicon, max 1.00 1.00 0.50Sulfur, max 0.02 0.02 0.02Phosphorus, max 0.02 0.02 0.02Nitrogen, max 0.30 0.30 0.16Nitrogen + Carbon, max . . . . . . 0.20Iron, max 1.00 1.00 1.00Titanium, max 0.50 0.50 0.50Aluminum,
23、max 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 exceed97.5 %.TABLE 2 Room Temperature Tensile and Charpy Requirements50 Cr-50 Ni 60 Cr-40 Ni 50 Cr-50 Ni-CbTensile strength,
24、min, ksi MPa 80 550 110 760 80 550Yield point, 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 . . .A 560/A 560M 052ASTM International takes no position respecting the validity of any patent rights asserted in connection
25、 with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible t
26、echnical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful conside
27、ration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received 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
28、 Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of 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).A 560/A 560M 053
