1、Designation:B75206(Reapproved 2011)2Standard Specification forCastings,Zirconium-Base,Corrosion Resistant,for GeneralApplication1This standard is issued under the fixed designation B752;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision
2、,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1NOTEMethod E 142 was removed editorially from Section 2 and X1.1.2 was corrected in April 2011.2NOTESI units were remove
3、d editorially from Elongation heading in Table S6.1 in March 2012.1.Scope1.1 This specification covers zirconium and zirconium-alloycastings for general corrosion-resistant and industrial applica-tions.1.2 The values stated in inch-pound units are to be regardedas standard.The values given in parent
4、heses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.2.Referenced Documents2.1 ASTM Standards:2A802/A802M Practice for Steel Castings,Surface Accep-tance Standards,Visual ExaminationE8 Test Methods for Tension Testing of Metallic Materia
5、lsE10 Test Method for Brinell Hardness of Metallic MaterialsE18 Test Methods for Rockwell Hardness of Metallic Ma-terialsE23 Test Methods for Notched Bar Impact Testing of Me-tallic MaterialsE94 Guide for Radiographic ExaminationE165 Practice for Liquid Penetrant Examination for GeneralIndustryE446
6、Reference Radiographs for Steel Castings Up to 2 in.(50.8 mm)in Thickness3.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 pour,nshall consist of all material melted and cast atone time.3.2 Lot Definitions:3.2.1 castings,na lot shall consist of all castings producedfrom the same
7、pour.4.Ordering Information4.1 Orders for castings to this specification shall include thefollowing,as required to describe the requirements adequately.4.1.1 Description of the castings by pattern number ordrawing(dimensional tolerances shall be included on thecasting drawing),4.1.2 Quantity,4.1.3 G
8、rade Designation(see Table 1),4.1.4 Options in the specification,and4.1.5 Supplementary requirements desired,including thestandards of acceptance.5.Materials and Manufacture5.1 Material for this specification shall be melted by con-ventional processes used for reactive metals.Typical methodsinclude
9、the consumable electrode and inductoslag meltingprocesses.6.Chemical Composition6.1 Pour AnalysisAn analysis of each pour shall be madeby the producer from a sample such as a casting or test bar thatis representative of the pour.The chemical composition deter-mined shall conform to the requirements
10、specified for therelevant grade in Table 1.6.1.1 The elements listed in Table 1 are intentional alloyingadditions of elements which are inherent to the manufacture ofprimary zirconium,zirconium sponge,mill product or castings.6.1.1.1 Elements other than those listed in Table 1 aredeemed to be capabl
11、e of occurring in the grades listed in Table1 by and only by way of unregulated or unanalyzed scrapadditions to the pour.Therefore,pour analysis for elements notlisted in Table 1 shall be considered to be in excess of the intentof this specification.6.2 When agreed upon by producer and purchaser and
12、requested by the purchaser in his written purchase order,1This specification is under the jurisdiction of ASTM Committee B10 onReactive and Refractory Metals and Alloys and is the direct responsibility ofSubcommittee B10.02 on Zirconium and Hafnium.Current edition approved April 1,2011.Published Apr
13、il 2011.Originallyapproved in 1985.Last previous edition approved in 2006 as B752 06.DOI:10.1520/B0752-06R11E02.2For 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 stand
14、ards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 chemical analysis shall be completed for specific residualelements not listed in this specification.6.3 Product AnalysisA product analysis may b
15、e made bythe purchaser on a representative casting from any lot.Becauseof the possibility of oxygen or other interstitial contamination,samples for oxygen,carbon,hydrogen,and nitrogen analysisshall be taken no closer than14in.(6.3 mm)to a cast surfaceexcept that castings too thin for this shall be a
16、nalyzed onrepresentative material.The chemical composition determinedshall conform to the analysis in Table 1 within the checkanalysis variations shown in Table 2 or shall be subject torejection by the purchaser.6.4 In the event of disagreement between the manufacturerand the purchaser on the conformance of the material to therequirements of this specification or any special test specifiedby the purchase,a mutually acceptable referee shall performthe tests in question.The results of the referees