Hard metal composition

Details Hard metal composition Hard metal composition

C - Chemistry, Metallurgy

22

C

75/58

C22C 29/00 (2006.01) C22C 27/04 (2006.01) C22C 32/00 (2006.01)

Patent

CA 1231561

HARD METAL COMPOSITION A composition of matter having a Rockwell A hardness of at least 85 is formed from a precursor mixture comprising between 3 and 10 weight percent boron carbide and the remainder a metal mixture comprising from 70 to 90 percent tungsten or molybdenum, with the remainder of the metal mixture comprising nickel and iron or a mixture thereof. The composition has a relatively low density of between 7 and 14 g/cc. The precursor is preferably hot pressed to yield a composition having greater than 100% of theoretical density.

458450

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