Low decarburization spring steel

Details Low decarburization spring steel Low decarburization spring steel

C - Chemistry, Metallurgy

22

C

C22C 38/60 (2006.01) C22C 38/02 (2006.01)

Patent

CA 2137743

A low decarburization spring steel consisting essentially of, in weight percentages, 0.40 to 0.75% C, 0.15 to 2.50% Si, 0.30 to 1.20% Mn, 0.005 to 0.100% Al and 0.005 to 0.100% Se, and optionally at least one selected from the group consisting of 0.50 to 2.50% Ni, 0.20 to 1.50% Cr, 0.05 to 1.50% Mo and/or at least one selected from the group consisting of 0.01 to 0.50% V and 0.01 to 0.50% Nb, the balance being Fe and inevitable impurities. The spring steels of this invention considerably reduce decarburization during hot working or heat treatment without recourse to anti-decarburizing agents or special heat treatment equipment.

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