R05255, tantalum alloy, 90 % tantalum, 10 % tungsten,
electron-beam furnace or vacuum-arc melt, or both,
R05252, tantalum alloy, 97.5 % tantalum, 2.5 % tungsten,
electron-beam furnace or vacuum-arc melt, or both, and
R05240 tantalum alloy, 60 % tantalum, 40 % niobium,
electron-beam furnace or vacuum-arc melt, or both.
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.
The following precautionary caveat pertains only to the test
methods portion, Section 13, of this specification: This
standard does not purport to address all of the safety problems, 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.
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