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ASTM B561

1994 Edition, February 15, 1994

Complete Document

Standard Specification for Refined Platinum

Includes all amendments and changes through Reapproval Notice , 2018


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Product Details:

  • Revision: 1994 Edition, February 15, 1994
  • Published Date: January 2018
  • Status: Active, Most Current
  • Document Language: English
  • Published By: ASTM International (ASTM)
  • Page Count: 2
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

This specification covers refined platinum as sponge, cast bar, and wrought forms (Note 1) in two grades as follows:

Grade 99.95 (UNS PO4995)—Platinum having a purity of 99.95 %, min, and

Grade 99.99—Platinum having a purity of 99.99 % min.

NOTE 1—Other forms of unfabricated platinum of commerce are not to be excluded under this specification.

NOTE 2—For the purposes of determining conformance with this specification, an observed value obtained from analysis shall be rounded to the nearest unit in the last right hand place of figures used in expressing the limiting value, in accordance with the rounding off method of Practice E29.

The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to become familiar with all hazards including those identified in the appropriate Safety Data Sheet (SDS) for this product/material as provided by the manufacturer, to establish appropriate safety, health, and environmental practices, and determine the applicability of regulatory limitations prior to use.

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.