ASTM B561-94 pdf free.Standard Specification for Refined Platinum.
This specification covers refined platinum as sponge,cast bar, and wrought forms (Note 1) in two grades as follows:1.1.1 Grade 99.95 (UNS PO4995) Platinum having apurity of 99.95%,min, andGrade 99.99Platinum having a purity of 99.99 %min.
ASTM Standards:E29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Specifications2
Materials and Manufacture:The metal may be produced by any refining process thatyields a product capable of meeting the chemical requirementsof this specification. The purchaser,upon request,shall beinformed of the refining process used.The surfaces of bars and wrought forms shall exhibitquality generally acceptable to the trade.
Chemical Composition: The refined platinum shall conform to the chemicalcomposition prescribed in Table 1.
The value of this material is such that special attentionmust be paid to sampling procedures.The purchaser andmanufacturer shall agree upon the sampling procedures used.5.2 Lot Size Sampling lots shall consist of the following:5.2.1 Sponge -A single refining lot,and A single melt or primary consolidation.
Pending the development of standard ASTM methods ofchemical or spectrographic analysis, or both, the methods to beused shall be a matter of agreement between the manufacturerand the purchaser.
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 rehearing.
If the platinum satisfies the requirements of thisspecification, it shall not be rejected for defects in the productsin which it is used.
In 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 sealed package,one formanufacturer, one for the purchaser, and one for an umpire, ifnecessary. The material shall be legibly identified by mark,label,or tag with the following information: platinum (Pt),Grade, lot or melt number, and weight to the nearest0.001 troy oz (0.03 g).ASTM B561 pdf download.
ASTM B561-94 pdf free
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