C - Chemistry – Metallurgy – 22 – C
Patent
C - Chemistry, Metallurgy
22
C
75/122
C22C 38/56 (2006.01)
Patent
CA 1191725
ALLOY RESISTANT TO CORROSION Abstract of the Invention An air-meltable, castable, weldable, non- magnetic alloy resistant to corrosion in sulfuric acid over a wide range of acid strengths. The alloy con- sists essentially of between about 18 and about 22% by weight nickel, between about 16.8 and 19.2% by weight chromium, between about 0.35 and about 1.95% by weight molybdenum, between about 2.5 and about 3.9% by weight copper, between about 3.2 and about 4.7% by weight manganese, between about 0.35% and 0.80% by weight niobium, up to about 0.7% by weight titanium, up to about 0.4% by weight tantalum, up to about 0.01% by weight boron, up to about 0.5% by weight cobalt, up to about 0.7% by weight silicon, up to about 0.08% by weight carbon, up to about 0.6% by weight of a rare earth component selected from the group consisting of cerium, lanthanum, and misch metal, up to about 0.15% by weight nitrogen, and between about 51% and about 58% by weight iron. The nickel content exceeds the chromium content by about 0.85% to about 5.2% by weight.
398678
Carondelet Foundry Company
Smart & Biggar
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