Pd-added austenitic stainless steel for use for high temperature

Details Pd-added austenitic stainless steel for use for high temperature Pd-added austenitic stainless steel for use for high temperature

1991-12-13

1992-09-29

Yee, Deborah

Alloys or metallic compositions

Ferrous

Nine percent or more chromium containing

420 50, 4205841, C22C 3840

Patent

active

051512483

ABSTRACT:
An austenitic stainless steel for use for high temperature concentrated sulfuric acid which comprises, on weight basis, 0.04% or less of C, 5-7% of Si, 2% or less of Mn, 15-25% of Cr, 4-24% of Ni, 0.01-1.07% of Pd and the rest consisting of Fe and unavoidable contaminant materials. By the incorporation of small amount of palladium in a basal austenitic stainless steel containing the essential three elements of Cr, Ni and Si, a superior corrosion resistance against highly concentrated high temperature sulfuric acid is attained.

REFERENCES:
patent: 4018569 (1977-04-01), Chang
patent: 4384891 (1983-05-01), Barnabe 420 35
Davies et al., Application of Saramet in H.sub.2 SO.sub.4 Plants, British Sulphur's 13th International Conference, Nov. 1988.

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