1、Designation: B 616 96 (Reapproved 2006)Standard Specification forRefined Rhodium1This standard is issued under the fixed designation B 616; 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 pare
2、ntheses 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 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 G
3、rade 99.90Rhodium 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 ex
4、pressing the limiting 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.
5、3 This standard does 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 p
6、rovided by the manufacturer, 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. Manu
7、facture3.1 The material may be 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 requirem
8、ents forchemical composition as prescribed 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 labora
9、tory.5. Sampling5.1 The value of this 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
10、 refining lot.6. Rejection and Rehearing6.1 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 ma
11、ke claim for a rehearing.6.2 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 separated into three parts,each of which shall be placed in a sealed p
12、ackage, one for themanufacturer, one for the 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 mu
13、tually acceptable laboratoryfor analysis. The results of the referees analysis shall be usedin determining conformance of the metal to this specification.7. Product Marking7.1 The material container shall be identified legibly by alabel or tag with the following information: rhodium (Rh),Grade_, lot
14、 number, and weight to the nearest 0.001 troyoz (0.03 g).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.Current edition approved June 1, 2006
15、 Published June 2006. Originallyapproved in 1977. Last previous edition approved in 2000 as B 616 96 (2000).2Compilation of Methods for Analytical Atomic Spectroscopy, 8th ed., 1987,available from ASTM.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-29
16、59, United States.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 su
17、ch 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 technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invit
18、ed either for revision of this standard or for 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
19、 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 Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this
20、 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).TABLE 1 Chemical RequirementsElementAComposition, %Grade99.80Grade99.90Grade99.95Rhodium, min (by difference) 99.80
21、99.90 99.95Platinum, max 0.10 0.05 0.02Iridium, max 0.10 0.05 0.02Palladium, max 0.05 0.05 0.005Ruthenium, max 0.05 0.05 0.01Lead, max 0.01 0.01 0.005Tin, max 0.01 0.01 0.003Zinc, max 0.01 0.01 0.003Arsenic, max 0.01 0.005 0.003Bismuth, max 0.01 0.005 0.005Cadmium, max 0.01 0.005 0.005Iron, max 0.01
22、 0.01 0.003Silicon, max 0.01 0.005Silver, max 0.02 0.005Gold, max 0.01 0.003Copper, max 0.01 0.005Nickel, max 0.01 0.003Tellurium, max 0.01 0.005Magnesium, max 0.01 0.005Calcium, max 0.01 0.005Aluminum, max 0.01 0.005Chromium, max 0.01 0.005Manganese, max 0.005 0.005Antimony, max 0.005 0.003Cobalt, max 0.005 0.001Boron, max 0.005 0.001ABy agreement between manufacturer and purchaser, analyses may berequired and limits established for elements or compounds not specified in thistable.B 616 96 (2006)2
