1、Designation:B61696(Reapproved 2012)Standard Specification forRefined Rhodium1This standard is issued under the fixed designation B616;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 rhodium as sponge andpowder in three grades as follows:1.1.1 Grade 99.80Rhodium having a purity of 99.80%,1.1.2 Grade 99.90Rhodi
3、um having a purity of 99.90%,and1.1.3 Grade 99.95Rhodium having a purity of 99.95%.1.1.4 For the purposes of determining conformance withthis specification,an observed value obtained from analysisshall be rounded to the nearest unit in the last right-hand placeof figures used in expressing the limit
4、ing value,in accordancewith the rounding method of Practice E29.1.2 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
5、 not purport to address all of thesafety concerns,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 appropriateMaterial Safety Data Sheet(MSDS)for this product/materialas provided by the manufactur
6、er,to establish appropriatesafety and health practices,and determine the applicability ofregulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2E29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Specifications3.Manufacture3.1 The material may b
7、e produced by any refining processthat yields a product capable of meeting the chemical require-ments of this specification.The purchaser,upon request,shallbe informed of the refining process used.4.Chemical Requirements4.1 The material should conform to the requirements forchemical composition as p
8、rescribed in Table 1.4.2 Analysis shall be made using the manufacturers stan-dard methods.In the event of disagreement as to the chemicalcomposition of the metal,methods of chemical analysis forreference purposes shall be determined by a mutually accept-able laboratory.5.Sampling5.1 The value of thi
9、s material is such that special attentionmust be paid to sampling procedures.The purchaser andmanufacturer shall agree upon sampling procedures used.5.2 Lot SizeSampling lots shall consist of the following:5.2.1 SpongeA single refining lot and5.2.2 PowderA single refining lot.6.Rejection and Reheari
10、ng6.1 Material that fails to conform to the requirements of thisspecification may be rejected.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 a rehearing.6.2 Investigatio
11、n 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 separated into three parts,each of which shall be placed in a sealed package,one for themanufacturer,one for the
12、purchaser,and one for an umpire,ifnecessary.6.3 In the event of disagreement between the manufacturerand the purchaser on the conformance of the metal to therequirements of this specification by the purchaser,the umpiresample is to be submitted to a mutually acceptable laboratoryfor analysis.The res
13、ults of the referees analysis shall be usedin determining conformance of the metal to this specification.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
14、 Materials.Current edition approved May 1,2012.Published May 2012.Originallyapproved in 1977.Last previous edition approved in 2006 as B616 96(2006).DOI:10.1520/B0616-96R12.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annua
15、l Book of 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 States1 7.Product Marking7.1 The material container shall be identified legibly by alabel o
16、r tag with the following information:rhodium(Rh),Grade_,lot number,and weight to the nearest 0.001 troyoz(0.03 g).8.Keywords8.1 refined rhodium;rhodium;spongeASTM 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 of such rights,are entirely their own responsibility.This stand
