ASTM B394 Standard Specification for Niobium and Niobium Alloy Seamless and Welded Tubes
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ASTM International
Standard Specification for Niobium and Niobium Alloy Seamless and Welded Tubes
N B394
Annotation
This specification covers wrought niobium and niobium alloy seamless and welded tubes as follows:
R04200-Type 1—Reactor grade unalloyed niobium,
R04210-Type 2—Commercial grade unalloyed niobium,
R04251-Type 3—Reactor grade niobium alloy containing 1 % zirconium, and
R04261-Type 4—Commercial grade niobium alloy containing 1 % zirconium.
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 of this specification. 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 establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Автоматический перевод:
Стандартная спецификация для ниобия и ниобия сплавляет бесшовные и сварные трубы
Эта спецификация покрытия вызвали ниобий и ниобий, сплавляет сквозные и сварные трубки следующим образом:
