ASTM International - ASTM B684-97(2012)
Standard Specification for Platinum-Iridium Electrical Contact Materials
| Organization: | ASTM International |
| Publication Date: | 1 November 2012 |
| Status: | inactive |
| Page Count: | 3 |
| ICS Code (Other non-ferrous metals and their alloys): | 77.120.99 |
scope:
1.1 This specification covers an 85 % platinum-15 % iridium alloy, and a 90 % platinum-10 % iridium alloy, in the form of rod, wire, strip, and sheet material for electrical contacts.
TABLE 1 Chemical Requirements
| Element | 85 Pt/15 Ir | 90 Pt/10 Ir |
| Weight % | Weight % | |
| Pt | balance | balance |
| Ir | 14.50-15.50 | 9.50-10.50 |
| Total Impurities | 0.2 max. | 0.2 max. |
| Total Platinum Group (Pd, Rh, Os, Ru), Au | 0.1 max. | 0.1 max. |
| Total Other Impurities (including the elements below) | 0.1 max. | 0.1 max. |
| Pb, Sb, Bi, Sn, As, Cd, Zn | 0.01 max each | 0.01 max each |
| Fe | 0.015 max each | 0.015 max each |
| Other elements | 0.02 max each | 0.02 max each |
1.2 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.
1.3 The original specification, B684 - 81, covered the 85 % platinum 15 % iridium alloy. The 1997 revision of this specification added the 90 % platinum 10 % iridium alloy.
1.4 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 Material Safety Data Sheet (MSDS) for this product/material as provided by the manufacturer, to establish appropriate safety and health practices, and determine the applicability of regulatory limitations prior to use.
abstract:
This specification covers two platinum-iridium alloys in the form of rod, wire, strip, and sheet material for electrical contacts. Raw materials shall be of such quality and purity that the... View More
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