1.1This specification covers tungsten-rhenium alloy wire suitable for use in electron devices and lamps. The material is known as UNS R07031.

1.2The term wire as used in this specification applies to all material 0.020 in. (0.51 mm) or less in diameter that is spooled or coiled.

1.3The 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.

1.4This 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 establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.