Steel sheet for press working that exhibits excellent stiffness

Details Steel sheet for press working that exhibits excellent stiffness Steel sheet for press working that exhibits excellent stiffness

1993-09-17

1994-12-13

Yee, Deborah

Metal treatment

Process of modifying or maintaining internal physical...

Carburizing or nitriding using externally supplied carbon or...

148219, 148318, 148319, C21D 106, C22C 3800

Patent

active

053726545

ABSTRACT:
The present invention provides a steel sheet for press working that exhibits excellent stiffness and satisfactory press workability. The steel sheet for press working includes: a composition of C+N+B=0.007 to 1.0 wt % in a region from the surface of the steel sheet to a position of 5% of the thickness in a direction of the thickness in at least either of the surface layers; a pole intensity of [{321}+{211}]/{100}.gtoreq.1.2 in a vertical direction to the sheet surface realized at a 3% thickness position in the direction of the thickness from the surface; and a composition of C+N+B=0.010 wt % less than in the central portion 40% except for two 30% portions of the two surface layers in the direction of the thickness.

REFERENCES:
patent: 4495006 (1985-01-01), Aves, Jr. et al.
patent: 4806175 (1989-02-01), Wendt

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