Method for producing low alloy hot rolled steel strip or sheet h

Details Method for producing low alloy hot rolled steel strip or sheet h Method for producing low alloy hot rolled steel strip or sheet h

1979-03-21

1982-02-23

Dean, R.

Metal treatment

Compositions

Heat treating

148 124, 148 36, C21D 714

Patent

active

043167535

ABSTRACT:
A method for producing a low alloy hot rolled steel strip or sheet comprising hot rolling a steel slab at a finishing temperature not higher than the Ar.sub.3 transformation temperature plus 60.degree. C. and cooling and coiling the hot rolled strip at a temperature not higher than 500.degree. C. The steel slab contains not more than 0.20% carbon, 0.50 to 2.50% manganese and 0.05 to 1.0% chromium and optionally contains not more than 1.0% silicon, the balance being iron and unavoidable impurities. The resultant strip or sheet has a high tensile strength of not less than 40 kg/mm.sup.2, a low yeild ratio of not more than 70% and an excellent total elongation of not less than 25%.

REFERENCES:
patent: 4062700 (1977-12-01), Hayami et al.

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