Hot working die steel excelling in molten corrosion...

Details Hot working die steel excelling in molten corrosion... Hot working die steel excelling in molten corrosion...

2005-01-11

2005-01-11

Yee, Deborah (Department: 1742)

Alloys or metallic compositions

Ferrous

Nine percent or more chromium containing

C420S037000, C420S038000, C420S067000, C420S114000, C420S107000, C148S318000, C148S319000, C148S328000, C148S326000

Reexamination Certificate

active

06841122

ABSTRACT:
A hot working die steel contains 0.05-0.25% C, 0.30% or less Si, 0.03% or less Mn, 1.0% or less Ni, 5.0-13.0 % Cr, 2.0% or less Mo, 1.0-8.0% W, 1.0-10.0% Co, 0.003-0.020% B, 0.005-0.050% N, and the balance consisting essentially of Fe and unavoidable impurities. If desired, the hot working die steel may further contain 0.01-1.0% V and 0.01-1.0% of at least one kind selected from Nb and Ta.

REFERENCES:
patent: 6117388 (2000-09-01), Shibata et al.
patent: 6379475 (2002-04-01), Kuehmann
patent: 6491767 (2002-12-01), Kuehmann

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