C - Chemistry – Metallurgy – 22 – C
Patent
C - Chemistry, Metallurgy
22
C
C22C 38/24 (2006.01) B21B 1/00 (2006.01) C21D 1/25 (2006.01) C21D 8/00 (2006.01) C21D 9/02 (2006.01) F16F 1/02 (2006.01)
Patent
CA 2071190
A hot rolled steel bar is subjected to controlled hot roll finishing and cooling conditions which, together with the composition of the steel and controlled subsequent heat treating and quenching conditions, enable the formation of a steel spring having both relatively high hardness and high toughness.
Heitmann William E.
Oakwood Thomas G.
Rastogi Prabhat K.
Inland Steel Company
Ridout & Maybee Llp
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