ACID AND ALKALI RESISTANT NICKEL-CHROMIUM-MOLYBDENUM-COPPER ALLOYS

摘要

A nickel-chromium-molybdenum-copper alloy resistant to 70% sulfuric acid at 93° C. and 50% sodium hydroxide at 121° C. for acid and alkali neutralization in the field of waste management; the alloy contains, in weight percent, 27 to 33 chromium, 4.9 to 7.8 molybdenum, greater than 3.1 but no more than 6.0 copper, up to 3.0 iron, 0.3 to 1.0 manganese, 0.1 to 0.5 aluminum, 0.1 to 0.8 silicon, 0.01 to 0.11 carbon, up to 0.13 nitrogen, up to 0.05 magnesium, up to 0.05 rare earth elements, with a balance of nickel and impurities.

主权项

1. A nickel-chromium-molybdenum-copper alloy resistant to 70% sulfuric acid at 93° C. and 50% sodium hydroxide at 121° C., consisting essentially of:
27 to 33 wt. % chromium 4.9 to 7.8 wt. % molybdenum greater than 3.1 wt. % but no more than 6.0 wt. % copper up to 3.0 wt. % iron 0.3 to 1.0 wt. % manganese 0.1 to 0.5 wt. % aluminum 0.1 to 0.8 wt. % silicon 0.01 to 0.11 wt. % carbon up to 0.13 wt. % nitrogen up to 0.05 wt. % magnesium up to 0.05 wt. % rare earth elements with a balance of nickel and impurities.