Patent ID: 6482354
Filing Date: 2002-11-19
Classification: C21D,C22C

Abstract:
A tool steel alloy having a unique combination of hardness and toughness, said alloy consisting essentially of, in weight percent, about:wt. %C1.85-2.30Mn0.15-1.0â€‚Si0.15-1.0â€‚P0.030 max.Sâ€‰â€ƒ0-0.30Cr3.7-5.0Ni + Cuâ€‚0.75 max.Moâ€ƒ1.0 max.Coâ€‚6-12W12.0-13.5V4.5-7.5and the balance is essentially iron and usual impurities, wherein the elements C, Cr, Mo, W, and V are balanced such thatâˆ’0.05&lE;&Dgr;C&lE;âˆ’0.42 where&Dgr;C=((0.033W)+(0.063Mo)+(0.06Cr)+(0.2V))âˆ’C.