Cold work steel

Details Cold work steel Cold work steel

2007-11-20

2007-11-20

Yee, Deborah (Department: 1742)

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

C075S239000, C148S334000, C420S111000

Reexamination Certificate

active

10481269

ABSTRACT:
A cold work steel has the following chemical composition in weight-%: 1.25-1.75% (C+N), however at least 0.5% C 0.1-1.5% Si 0.1-1.5% Mn 4.0-5.5% Cr 2.5-4.5% (Mo+W/2), however max. 0.5% W 3.0-4.5% (V+Nb/2), however max. 0.5% Nb max 0.3% S balance iron and unavoidable impurities, and a microstructure which in the hardened and tempered condition of the steel contains 6-13 vol-% of vanadium-rich MX-carbides, -nitrides and/or carbonitrides which are evenly distributed in the matrix of the steel, where X is carbon and/or nitrogen, at least 90 vol-% of said carbides, nitrides and/or carbonitrides having an equivalent diameter, Deq, which is smaller than 3.0 μm; and totally max. 1 vol-% of other, possibly existing carbides, nitrides or carbonitrides.

REFERENCES:
patent: 4863515 (1989-09-01), Roberts et al.
patent: 5651842 (1997-07-01), Nakamura et al.
patent: 0 630 984 (1994-12-01), None
patent: 07-011398 (1995-01-01), None
patent: 457 356 (1998-12-01), None
patent: WO 98/40180 (1998-09-01), None
patent: WO 98/40180 (1998-09-01), None
patent: WO 01/25499 (2001-04-01), None

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