ASTM B392-18
- Standard Specification for Niobium and Niobium Alloy Bar, Rod, and Wire
- standard by ASTM International, 04/01/2018
- Category: ASTM
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1.1 This specification covers four grades of wrought niobium and niobium alloy bar, rod, and wire as follows:
1.1.1 R04200-Type 1-Reactor grade unalloyed niobium,
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