Metal treatment – Process of modifying or maintaining internal physical... – Chemical-heat removing or burning of metal
Patent
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.
Kobayashi Ryohei
Kurimoto Mamoru
Ozone Toshio
Yamamoto Toshiro
Aichi Steel Works Ltd.
Chuo Hatsujo Kabushiki Kaisha
Kaplan Blum
Yee Deborah
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