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High Alloy Materials
Nickel Alloy 400

Physical Properties of Nickel Alloy 400 in the Annealed Condition at -20°F to +100°F

      Tensile Strength Yield Strength            
Alloy UNS Designation Spec. psi MPa ksi psi MPa ksi Elongation in 2 in. (min.) % Grain Size Req. Max. Hardness Modulus of Elasticity (x106psi) Mean Coefficient of Thermal Expansion (IN./IN./°F x 10-6) Thermal Conductivity (BTU-in/ ft2-h-°F)
400 N04400 B725, B730 70,000* 480* 70 28,000* 195* 28 35* 26 7.7 168

*Annealed condition

Composition of Nickel Alloy 400 tubing and pipe

Grade 400
UNS Designation N04400
Nickel (Ni) 63.0 Min. (plus Cobalt)
Chromium (Cr)
Iron (Fe) 2.5 Max.
Molybdenum (Mo)
Titanium (Ti) Max.
Aluminum (Al) Max.
Cobalt (Co) Max.
Tungsten (W)
Vanadium (V) Max.
Copper (Cu) Max. 28.0 – 34.0
Manganese (Mn) Max. 2.00
Niobium (Nb) plus Tantalum
Carbon (C) Max. 0.3
Nitrogen (N) Max.
Silicon (Si) Max. 0.5
Sulphur (S) Max. 0.024
Phosphorous (P) Max.
Other Elements

Nickel Alloy 400 Product Range

Alloy UNS Designation Werkstoff NR. Specifications*
400 N04400 2.4360 B275, B730

*Note: The specifications noted including ASTM, ASME, or other applicable authorities are correct at the time of publication. Other specifications may apply for use of these materials in different applications.

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