Abrasion, erosion and corrosion resistant alloy

Details Abrasion, erosion and corrosion resistant alloy Abrasion, erosion and corrosion resistant alloy

1993-04-05

1994-04-26

Yee, Deborah

Alloys or metallic compositions

Ferrous

Nine percent or more chromium containing

420 50, C22C 3834

Patent

active

053064640

ABSTRACT:
Air-meltable, castable, machinable, tough, silicon containing, chromium-nickel-iron alloys that are resistant to hot concentrated sulfuric acid and to abrasive or erosive action of grit or vapor bubbles in the acid. The alloys consist of, by weight, about 15% to about 25% nickel, from about 15% to about 26% chromium, from about 4.5% to about 8% silicon, from about 1% to about 4% copper, from about 0.3% to about 3% molybdenum, from about 0.5% to about 1.7% carbon, up to about 1.5% manganese, and the balance substantially iron plus the usual impurities and incidental tramp elements.

REFERENCES:
patent: 2938786 (1960-05-01), Johnson
patent: 2938787 (1960-05-01), Boyd et al.
patent: 3758296 (1973-09-01), Johnson
Niu Hong-jun, et al., "Microstructure and Properties of a New Austenitic Heat-Resisting Steel Fe-Cr18.2-Ni6.9-Mo2.5-C1.5", Heat-Resisting Materials, Proceedings of the First International Conference, Fontana, Wis., U.S.A., 23-26 Sep., 1991, pp. 269-274.

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