Alloy 20 Seamless Nickel Pipe

Alloy 20 nickel pipe is made from a nickel-iron-chromium alloy with additions of copper and molybdenum. Contains niobium for stabilization against sensitization resulting in intergranular corrosion. Has excellent resistance to general corrosion, pitting, and crevice corrosion in chemicals, containing chlorides and sulfuric, phosphoric, nitric acids.

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

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Stock Size Range:

OD: 1/2" through 4"
Wall: Schedule 40 through Schedule 80

Specifications: ASTM B729, ASME SB 729

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   Mpa
Yield Strength 35 ksi 240
Tensile Strength 80 ksi 550
Elongation % 30