Graphite precipitated hot-rolled steel plate having excellent be

Details Graphite precipitated hot-rolled steel plate having excellent be Graphite precipitated hot-rolled steel plate having excellent be

1992-01-21

1992-08-18

Yee, Deborah

Metal treatment

Process of modifying or maintaining internal physical...

Heating or cooling of solid metal

148330, C22C 3804, C21D 802

Patent

active

051395835

ABSTRACT:
A graphite precipitated hot-rolled steel plate having excellent bending workability and hardenability, the graphite precipitated hot-rolled steel plate comprising: 0.1 to 1.0% (by weight percent) C; 0.05 to 1.0% (by weight percent) Mn; 3 to 50 ppm B; 200 ppm or less N the quantity of which is three times or more the quantity of B; and a balance of Fe and unavoidable impurities, wherein graphite the diameter of which is 5 .mu.m or less is precipitated in such a manner that distance between graphite particles is at a distance of 5 .mu.m or longer.

REFERENCES:
patent: 3660174 (1972-05-01), Jakenberg
patent: 4435226 (1984-03-01), Neuhauser et al.
patent: 4491476 (1985-01-01), Tada et al.

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