Press-formable high strength dual phase structure cold rolled st

Details Press-formable high strength dual phase structure cold rolled st Press-formable high strength dual phase structure cold rolled st

1981-07-06

1984-03-13

Skiff, Peter K.

Metal treatment

Compositions

Heat treating

148 124, 148 36, C21D 804

Patent

active

044365616

ABSTRACT:
A press-formable, high-strength, dual phase structure cold rolled steel sheet is disclosed. The sheet is made from steel consisting of C: 0.02-0.20%, Si: less than 0.1%, Mn: 1.0-2.0%, acid-soluble Al: 0.005-0.100%, B: more than 0.0003% and less than 0.0050% in terms of B-0.7.times.N on the condition that B/C is more than 0.03, N: less than 0.0060%, the balance being iron and incidental impurities. A process for producing such steel sheet is also disclosed.

REFERENCES:
patent: 3951696 (1976-04-01), Gondo et al.
patent: 4001052 (1977-01-01), Nakazato et al.
patent: 4025368 (1977-05-01), Sanbongi et al.
patent: 4115155 (1978-09-01), Roe

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