High speed tool steel produced by powder metallurgy

Details High speed tool steel produced by powder metallurgy High speed tool steel produced by powder metallurgy

1990-02-07

1991-06-04

Stoll, Robert L.

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

75245, 419 15, 419 29, 419 48, 420 10, C22C 2902

Patent

active

050210858

ABSTRACT:
The invention relates to high speed tool steels produced by powder metallurgy; to parts subject to heavy wear which are fabricated from such steel; and to a method of such fabrication. According to the invention, the part subject to heavy wear contains Nb in the amount of 2-15 wt. % and V in the amount of 1-4 wt. %, and further contains metal carbides in the amount of 10-30 vol. %; and that the lower limit of the carbon content is given by the formula

REFERENCES:
patent: 4121929 (1978-10-01), Kawai et al.
patent: 4121930 (1978-10-01), Yukawa et al.
patent: 4469514 (1984-09-01), Holtz
patent: 4599109 (1986-07-01), Kawai et al.

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