METALLIC NICKEL-BASED ACID-RESISTANT MATERIAL
A nickel-molybdenum-iron alloy with high corrosion resistance with respect to reducing media at high temperatures, consisting of (in % by mass): 61 to 63% nickel, 24 to 26% molybdenum, 10 to 14% iron, 0.20 to 0.40% niobium, 0.1 to 0.3% aluminum, 0.01 to 1.0% chromium, 0.1 to 1.0% manganese, at most 0.5% copper, at most 0.01% carbon, at most 0.1% silicon, at most 0.02% phosphorus, at most 0.01% sulphur, at most 1.0% cobalt, and further smelting-related impurities.
1 : Nickel-molybdenum-iron alloy with high resistance relative to reducing media at high temperatures, consisting of (in % by mass)
61 to 63% nickel
24 to 26% molybdenum
10 to 14% iron
0.20 to 0.40% niobium
0.1 to 0.3% aluminum
0.01 to 1.0% chromium
0.1 to 1.0% manganese
max. 0.5% copper
max. 0.01% carbon
max. 0.1% silicon
max. 0.02% phosphorus
max. 0.01% sulfur
max. 1.0% cobalt
and further impurities from smelting.
2 . Alloy according to claim 1 , with (in % by mass)
61.5 to 62.5% nickel
24.5 to 26.0% molybdenum
10.5 to 13.5% iron
0.2 to 0.4% niobium
0.1 to 0.3% aluminum
0.01 to 1.0% chromium
0.1 to 0.8% manganese
max. 0.5% copper
max. 0.01% carbon
max. 0.1% silicon
max. 0.02% phosphorus
max. 0.01% sulfur
max. 1.0% cobalt.
3 . Alloy according to claim 1 , with (in % by mass)
61.5 to 62.5% nickel
24.8 to 26.0% molybdenum
10.5 to 12.5% iron
0.2 to 0.4% niobium
0.1 to 0.3% aluminum
0.01 to 0.9% chromium
0.1 to 0.5% manganese
max. 0.3% copper
max. 0.008% carbon
max. 0.08% silicon
max. 0.015% phosphorus
max. 0.008% sulfur
max. 0.02% nitrogen
max. 0.012% magnesium
max. 1.0% cobalt.
4 . Use of the alloy according to claim 1 for components with high corrosion resistance toward reducing media, especially hot moderately concentrated sulfuric acid and hydrochloric acid solutions.
5 . Use of the alloy according to claim 1 for components in chemical plants.
6 . Use of the alloy according to claim 1 as a weld filler of like material and for welding of nickel-molybdenum alloys.
7 . Use of the alloy according to claim 1 as a wrought material for the production of sheets, strips, wires, bars, forgings and tubes and as castings.