High carbon high chromium alloys having corrosion and abrasion r

Details High carbon high chromium alloys having corrosion and abrasion r High carbon high chromium alloys having corrosion and abrasion r

1993-04-26

1994-06-14

Yee, Deborah

Alloys or metallic compositions

Ferrous

Nine percent or more chromium containing

420 50, 420582, 420585, C22C 3842, C22C 3000

Patent

active

053208013

ABSTRACT:
Air-meltable, castable, machinable, hardenable alloys that are resistant to highly corrosive and abrasive slurries, especially those employed in the handling of wet-process phosphoric acid reactor fluids or hot concentrated sulfuric acid. The alloys consist of, by weight, about 11% to about 40% nickel (plus cobalt), about 27% to about 42% chromium, about 1% to about 4% copper, about 3% to about 4.5% silicon, about 0.7% to about 2% carbon, about 0.3% to about 3% manganese, up to about 4.5% molybdenum, and the balance essentially iron plus the usual minor impurities.

REFERENCES:
patent: 3758296 (1973-09-01), Johnson
patent: 4063934 (1977-12-01), Thuillier et al.
patent: 4080198 (1978-03-01), Heyer et al.
patent: 4536232 (1985-08-01), Khandros et al.
Niu Hong-jun et al., Heat-Resisting Materials, Proceedings of the First International Conference, Fontana, Wis., USA/Sep. 23-26, 1991, pp. 269-274.

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