ASTM-B684 2012

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B684-97(2012) Standard Specification for Platinum-Iridium Electrical Contact Materials

Published By	Publication Date	Number of Pages
ASTM	2012	3

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Categories: 77.120.99 - Other non-ferrous metals and their alloys, ASTM

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Description

1.1 This specification covers an 85?% platinum15?% iridium alloy, and a 90?% platinum10?% iridium alloy, in the form of rod, wire, strip, and sheet material for electrical contacts.

TABLE 1 Chemical Requirements

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.

Additional information

	Weight %
Total Other Impurities (including the elements below)	0.1 max.
Pt	balance
Element	85 Pt/15 Ir
Pb, Sb, Bi, Sn, As, Cd, Zn	0.01 max each
Ir	14.50-15.50
Total Platinum Group (Pd, Rh, Os, Ru), Au	0.1 max.
Total Impurities	0.2 max.
Fe	0.015 max each
Other elements	0.02 max each
ICS Codes	77.120.99 - Other non-ferrous metals and their alloys

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ASTM-B684 2012

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