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SAE AMS7857C
- Columbium (Niobium) Alloy Bars, Rods, and Extrusions 10Hf - 1.0Ti, Recrystallization Annealed
- standard by SAE International, 05/01/2013
- Publisher: SAE
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This specification covers a columbium (niobium) alloy in the form of bars, rods, and extrusions.This material has been used typically for parts requiring exposure at ultra-high temperatures, but usage is not limited to such applications. Applications in oxidizing atmospheres necessitate a protective coating.