Standard TUNGSTEN CARBIDE POWDER Cobalt Coated 2011-08-15 HISTORICAL AMS7878A This specification covers cobalt-coated tungsten carbide in the form of powder.
Standard Tungsten Carbide Powder, Cobalt Coated 2002-08-20 CURRENT AMS7878C This specification has been declared "NONCURRENT" by the Aerospace Materials Division, SAE, as of March 1994. It is recommended, therefore, that this specification not be specified for new designs.
Standard TUNGSTEN CARBIDE POWDER Cobalt Coated 1971-05-01 HISTORICAL AMS7878 This specification covers cobalt-coated tungsten carbide in the form of powder.