Specialized metallurgical processes – compositions for use therei – Compositions – Consolidated metal powder compositions
Patent
1987-12-16
1989-09-05
Lechert, Jr., Stephen J.
Specialized metallurgical processes, compositions for use therei
Compositions
Consolidated metal powder compositions
75239, 75241, 75246, C22C 2904
Patent
active
048635154
ABSTRACT:
The invention relates to a tool steel intended for cold working operations and having very high impact strength and good resistance to wear, said steel being made powder-metallurgically by consolidation of metal powder to a dense body. The steel has the following chemical composition expessed in weight-% 1-2.5% C, 0.1-2% Si, max 0.3% N, 0.1-2% Mn, 6.5-11% Cr, max 4% Mo, max 1% W and 3-7% V, wherein up to half the amount of vanadium can be replaced by 1.5 times as much niobium, and wherein the ratio V/C shall amount to between 2.5 and 3.7, balance essentially only iron and impurities and accessory elements in normal amounts.
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Johansson Borje
Roberts William
Lechert Jr. Stephen J.
Uddeholm Tooling Aktiebolag
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