1、Designation: A 1002 99 (Reapproved 2003)Standard Specification forCastings, Nickel-Aluminum Ordered Alloy1This standard is issued under the fixed designation A 1002; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last
2、revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers nickel-aluminum ordered alloycastings intended for heat-resisting and elevated-temperatureapplic
3、ations such as heat-resistant alloy structural members,containers, supports, hangers, spacers, and so forth, in envi-ronments up to 2300F (1260C).1.2 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.
4、 The values stated in eachsystem are not exact equivalents; therefore, each system mustbe used independently of the other. Combining values from thetwo systems may result in nonconformance with this specifi-cation.2. Referenced Documents2.1 ASTM Standards:A 370 Test Methods and Definitions for Mecha
5、nical Testingof Steel Products2A 781/A 781M Specification for Castings, Steel and Alloy,Common Requirements, for General Industrial Use23. General Conditions for Delivery3.1 Material furnished to this specification shall conform tothe requirements of Specification A 781/A 781M, includingany suppleme
6、ntary requirements that 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 speci
7、fication shall prevail.4. Ordering Information4.1 The purchaser should specify the alloy grade desiredand whether tension or impact tests are required, and shallinclude standards of acceptance where necessary.5. Materials and Manufacture5.1 ProcessThe alloy for the castings shall be by anymethod unl
8、ess otherwise agreed upon between the manufac-turer and the purchaser. Casting may be poured in sand, shell,investment, or centrifugal 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 th
9、e manufacturer andthe purchaser 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. Mechanical Properties7.1 Mechanical properties are not required unless spe
10、cifiedin the purchase order.7.2 Tensile properties, if required, of the alloy used for thecastings shall conform to the requirements prescribed in thepurchase order.7.3 Impact properties, if required, of the alloy used for thecastings shall conform to the requirements prescribed in thepurchase order
11、.8. Test Specimens8.1 Test specimens, if required, shall be prepared in accor-dance with Test Methods and Definitions A 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 f
12、or the tests required inSection 9.1This 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 Oct. 1, 2003. Published October 2003. Originallyapproved in 1
13、999. Last previous edition approved in 1999 as A 1002 99.2Annual Book of ASTM Standards, Vol 01.02.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.8.2 The test coupons shall be cast from the same melt fromwhich the castings they repr
14、esent 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 2-in. 50-mm gage lengthspecimen shown in Fig. 4 of T
15、est Methods and DefinitionsA 370.8.4 Impact test specimens shall conform to the length andcross-section dimensions shown in Fig. 10 of Test Methods andDefinitions A 370. The impact specimens are to be brokenunnotched.9. Number of Tests and Retests9.1 Tension TestOne tension test, if required by thep
16、urchase order, shall be made from each heat.9.2 Impact TestOne unnotched Charpy impact test, ifrequired by the purchase order, shall be made from each heat.9.3 Retests:9.3.1 Retests of a duplicate specimen will be allowed if theresults of the mechanical tests for any lot does not conform tothe requi
17、rements specified in the purchase order.9.3.2 If the elongation of any tension test specimen is lessthan specified, and any part of the fracture is more than34 in.19.0 mm from the center of the gage length, as indicated byscribe scratches marked on the specimen before testing, a retestshall be allow
18、ed.10. Keywords10.1 casting; elevated temperature; heat-resistant alloy;heat-resisting; nickel aluminide; nickel aluminumSUPPLEMENTARY REQUIREMENTSSupplementary requirements only apply when specified in the purchase order. A list of standardizedsupplementary requirements for use at the option of the
19、 purchaser is included in SpecificationA 781/A 781M. Supplementary Requirements S1 and S11 of Specification A 781/A 781M are notappropriate for this specification and shall not be specified. In addition, the following SupplementaryRequirement S18, for welding applications, is not listed in Specifica
20、tion A 781/A 781M.S18. Welding ApplicationsS18.1 The sulfur shall be 0.003 % by weight or less and thesilicon shall be 0.05 % by weight or less. Detailed informationconcerning welding is available from Materials Processing,Metals and Ceramics Div., Oak Ridge National Laboratory,P.O. Box 2008, Oak Ri
21、dge, TN 37831-6083.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 any such patent rights, and the riskof infringement
22、of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical 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
23、 additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration 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
24、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) of this standard may be obtained by contacting ASTM a
25、t 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).TABLE 1 Chemical RequirementsElement Composition, % by WeightCarbon, max 0.08Sulfur, maxA0.020Aluminum 7.38.3Chromium 7.58.5Molybdenum 1.201.70Zirconium 1.62.10Boron 0.0030.012Silicon, maxA0.20Iron, max 1.00Nickel BalanceAFor welding applications, see S18 for restrictions on sulfur and silicon.A 1002 99 (2003)2
