Method of making high strength hot rolled steel sheet having exc

Details Method of making high strength hot rolled steel sheet having exc Method of making high strength hot rolled steel sheet having exc

1981-08-03

1983-06-14

Skiff, Peter K.

Metal treatment

Compositions

Heat treating

148 124, 148 36, C21D 802

Patent

active

043881220

ABSTRACT:
A high strength hot rolled steel sheet having excellent flash butt weldability, fatigue characteristic and formability, has a composite structure composed of polygonal ferrite and bainite and containing from 0.01 to 0.15% by weight of C, from 0.01 to 1.5% by weight of Si and from 0.3 to 2.0% by weight of Mn, the rest being Fe and impurities, the areal ratio of the bainite being from 3 to 60%. The steel sheet is suitable as a material for wheel rims or discs for automobiles.

REFERENCES:
patent: 3539404 (1970-11-01), DeRetana
patent: 4072543 (1978-02-01), Coldren et al.
patent: 4184898 (1980-01-01), Ouchi et al.
patent: 4188241 (1980-02-01), Watanabe et al.
patent: 4316753 (1982-02-01), Kaneko et al.

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