1、Designation:B67181(Reapproved 2017)Standard Specification forRefined Iridium1This standard is issued under the fixed designation B671;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses i
2、ndicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers refined iridium as sponge andpowder in two grades as follows:1.1.1 Grade 99.80(UNS PO6100)Iridium having a purityof 99.80%.1.1.2 Grade 9
3、9.90Iridium having a purity of 99.90%.NOTE1For the purposes of determining conformance with thisspecification,an observed value obtained from analysis shall be roundedto the nearest unit in the last right-hand place of figures used in expressingthe limiting value,in accordance with the rounding meth
4、od of PracticeE29.1.2 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.3 This standard does not purport to address all of thesafety conce
5、rns,if any,associated with its use.It is theresponsibility of the user of this standard to become familiarwith all hazards including those identified in the appropriateSafety Data Sheet(SDS)for this product/material as providedby the manufacturer,to establish appropriate safety and healthpractices,a
6、nd determine the applicability of regulatory limi-tations prior to use.1.4 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-
7、mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2E29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Specifications3.Materials and Manufacture3.1 The metal may be produced by any refin
8、ing process thatyields a product capable of meeting the chemical requirementsof this specification.The purchaser,upon request,shall beinformed of the refining process used.4.Chemical Composition4.1 The refined iridium shall conform to the chemicalcomposition prescribed in Table 1.5.Sampling5.1 The v
9、alue of this material is such that special attentionmust be paid to sampling procedures.The purchaser andmanufacturer shall agree upon sampling procedures used.5.2 Sampling lots shall consist of the following:5.2.1 SpongeA single refining lot.5.2.2 PowderA single refining lot.6.Method of Analysis6.1
10、 Pending the development of standardASTM methods ofchemical or spectrographic analysis,or both,the methods to beused shall be a matter of agreement between manufacturer andthe purchaser.7.Rejection and Rehearing7.1 Material that fails to conform to the requirements of thisspecification may be reject
11、ed.Rejection should be reported tothe producer or supplier promptly and in writing.In case ofdissatisfaction with the results of the test,the producer orsupplier may make claim for rehearing.7.1.1 If the iridium satisfies the requirements of thisspecification,it shall not be condemned for defects in
12、 theproducts in which it is used.7.2 Investigation of ClaimsIn a question of chemicalcomposition,a new sample shall be drawn by representativesof both parties in accordance with Section 5.The properlymixed and quartered sample shall be divided into three parts,each of which shall be placed in a seal
13、ed package,one for themanufacturer,one for the purchaser,and one for an umpire,ifnecessary.1This specification is under the jurisdiction of ASTM Committee B02 onNonferrous Metals and Alloys and is the direct responsibility of SubcommitteeB02.05 on Precious Metals and Electrical Contact Materials.Cur
14、rent edition approved April 1,2017.Published April 2017.Originallyapproved in 1980.Last previous edition approved in 2010 as B671 81(2010).DOI:10.1520/B0671-81R17.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of
15、ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized princip
16、les 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.1 8.Product Marking8.1 The material container shall be legibly identified by alabel or tag with the following information:Iridium(Ir),Grade_,lot number,and weight to the nearest 0.001 troy oz(0.03 g).9.Keywords9.1 iridium;refined iridium;spongeASTM International takes no position
