Historical
ASTM B521-12
Standard Specification for Tantalum and Tantalum Alloy Seamless and Welded Tubes
1.1 This specification covers tantalum and tantalum alloy seamless and welded tubes of the following grades:
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.
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ASTM International [astm]