Ferritic stainless steel bellows

Details Ferritic stainless steel bellows Ferritic stainless steel bellows

1995-12-27

1997-11-11

Yee, Deborah

Metal treatment

Stock

Ferrous

C22C 3806, C22C 3818

Patent

active

056859236

ABSTRACT:
Disclosed is a ferritic stainless steel for forming into bellows having high resistance to stress corrosion cracking, comprising, in terms of wt %, not greater than 0.02% of C, from 0.1 to 1.5% of Si, not greater than 1.0% of Mn, from 11.0 to 22.0% of Cr, from 0.01 to 0.08% of Al, not greater than 0.015% of N, at least one of not greater than 0.6% of Ti and not greater than 1.0% of Nb, whenever necessary, and furthermore, at least one of not greater than 2% of Mn, not greater than 1.5% of Cu and not greater than 1.5% of Ni. This steel has the crystal grain size measured in a section in a direction orthogonal to a rolling direction is not greater than 8.5 in terms of the grain size number, and the crystal grain size measured in a section orthogonal to a section parallel to the rolling direction is not smaller than 5.0 on an average in terms of the grain size number.

REFERENCES:
patent: 4286986 (1981-09-01), Borneman et al.
patent: 4461811 (1984-07-01), Borneman et al.
patent: 4690798 (1987-09-01), Narutani et al.

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