Process for producing a ferritic stainless steel having an impro

Details Process for producing a ferritic stainless steel having an impro Process for producing a ferritic stainless steel having an impro

1997-03-17

1998-07-14

Yee, Deborah

Metal treatment

Stock

Ferrous

148605, 148609, 420 68, C21D 900, C21D 802, C22C 3844

Patent

active

057798206

ABSTRACT:
The present invention relates to a process for producing a ferritic stainless steel having an improved corrosion resistance, and especially resistance to intergranular corrosion and to pitting corrosion. The steel is subjected, in a first phase, to cooling at a rate of between 400.degree. C. and 600.degree. C./hour down to a temperature of 900.degree. C. and then, in a second phase, to rapid cooling at a rate of between 1200.degree. C. and 1400.degree. C./h.

REFERENCES:
patent: 4119765 (1978-10-01), Pinnow et al.
patent: 5302214 (1994-04-01), Uematsu et al.

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