Alloy 20 Nickel Tubing

Alloy 20 is a nickel-chromium-molybdenum alloy developed for applications involving sulfuric acid. Its corrosion resistance also finds other uses in the chemical, food, pharmaceutical, power generation and plastics industries. Alloy 20 nickel tubing resists pitting and chloride ion corrosion and its copper content protects it from sulfuric acid.

Typical applications include tanks, piping, heat exchangers, pumps, valves.

Stock Size Range:



.375" through 1" OD
.035" through .065"
.125" OD through 1" OD
.035" through .109" wall
Specifications: ASTM B468, ASME SB468
Specifications: ASTM B729, ASME SB729
Typical Chemical Composition %
Nickel 32.0-38.0
Chromium 19.0-21.0
Iron Remainder
Molybdenum 2.0-3.0
Sulfur .035 max
Carbon 0.07 max
Manganese 2.0 max
Silicon 1.00 max
Phosphorous .045 max
Copper 3.0-4.0
Nb+Ta 8 X C-1.0
Typical Mechanical Properties
Annealed KSI MPA
Yield Strength (0.2% offset) 35 ksi 241
Tensile Strength 80 ksi 551
Elongation % in 2" 30.0  
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