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Standard

Columbium (Niobium) Sheet, Strip, and Foil

2021-02-04
WIP
AMS7850F
This specification covers columbium in the form of sheet, strip, plate, and foil. This material has been used typically for parts requiring exposure to ultra-high temperatures, but usage is not limited to such applications. Applications in oxidizing atmospheres necessitate a protective coating. Although produced in the cold rolled condition, this material is intended to be used in the annealed condition.
Standard

TUNGSTEN FORGINGS Pressed, Sintered, and Forged

2011-08-15
HISTORICAL
AMS7897A
This specification covers tungsten in the form of forgings produced from billets processed by isostatically cold pressing, utilizing hydrogen reduced tungsten powder, and high-temperature sintering.
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