Process of treating steel for a vehicle suspension spring to imp

Details Process of treating steel for a vehicle suspension spring to imp Process of treating steel for a vehicle suspension spring to imp

1986-08-07

1988-09-13

Yee, Deborah

Metal treatment

Process of modifying or maintaining internal physical...

Chemical-heat removing or burning of metal

148150, C21D 902

Patent

active

047707216

ABSTRACT:
A spring steel having a good sag-resistance comprises by weight 0.5-0.8% carbon, 0.5-1.4% silicon, 0.5-1.5% manganese and a member or members selected from a group consisting of 0.05-0.5% vanadium, 0.05-0.5% niobium and 0.05-0.5% molybdenum, the remainder being iron together with impurities. The steel may further contain a member or members selected from a group consisting 0.0005-0.01% boron, 0.2-2.0% nickel and not greater than 0.3% rare-earth elements and/or a member or members selected from a group consisting of 0.02-0.1% titanium and 0.02-0.1% zirconium.

REFERENCES:
patent: 4574016 (1986-03-01), Yamamoto et al.
patent: 4711675 (1985-07-01), Yamamoto et al.

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