Process for producing a steel having excellent strength and toug

Details Process for producing a steel having excellent strength and toug Process for producing a steel having excellent strength and toug

1975-12-05

1978-05-30

Satterfield, Walter R.

Metal treatment

Compositions

Heat treating

148 3, 148 12F, 75123B, 75124, C21D 948

Patent

active

040921786

ABSTRACT:
A process for producing a steel having excellent strength and toughness, which comprises continuously casting a molten steel containing 0.01 - 0.10% Al and 0.002 - 0.009% N with an average cooling rate of not lower than 3.degree. C/min. down to 500.degree. C to obtain a steel slab heating the steel slab to a temperature ranging from 900.degree. to 1150.degree. C and rolling the steel slab.

REFERENCES:
patent: 3876476 (1975-04-01), Matsuoka et al.
patent: 3948691 (1976-04-01), Matsushita et al.
patent: 3971678 (1976-07-01), Vlad
patent: 3990924 (1976-11-01), Matsumoto et al.

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