Machinable ferritic stainless steels

Details Machinable ferritic stainless steels Machinable ferritic stainless steels

1978-09-13

1980-08-26

Rutledge, L. Dewayne

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75126M, 75126C, 75126R, 148 37, C22C 3822, C22C 3860, C22C 3916

Patent

active

042193567

ABSTRACT:
Machinable ferrite stainless steels having an excellent corrosion resistance, consisting of not more than 0.030% of C, not more than 0.050% of N, not more than 0.012% of O, not more than 0.8% of Si, not more than 1.6% of Mn, 0.05-0.40% of S, 16-22% of Cr, and 1-3% of Mo, or at least one of 0.03-0.25% of Pb, 0.03-0.20% of Se and 0.01-0.15% of Te, the remainder being Fe, provided that the sum of C and N is not more than 0.060% and Mn/S is 2-5, characterized by that Cr content based on 100 parts by weight of sulfide inclusions formed in the said steels is 10-50 parts by weight.

REFERENCES:
patent: B416399 (1975-01-01), Denhard, Jr. et al.
patent: 3846186 (1974-11-01), Tipnis
patent: 3928088 (1975-12-01), Schlosser et al.
Carpenter Project '70, 182-FM (S18200) (6/76).

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