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Grade CW2M (J26455) Cast Nickel

Grade CW2M nickel is a nickel alloy formulated for casting. Cited properties are appropriate for the heat treated (HT) condition. CW2M is the ASTM designation for this material. J26455 is the UNS number. The graph bars on the material properties cards below compare grade CW2M nickel to: cast nickels (top), all nickel alloys (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.

Mechanical Properties

Elastic (Young's, Tensile) Modulus

210 GPa 31 x 106 psi

Elongation at Break

23 %

Fatigue Strength

190 MPa 27 x 103 psi

Poisson's Ratio

0.29

Shear Modulus

83 GPa 12 x 106 psi

Tensile Strength: Ultimate (UTS)

560 MPa 82 x 103 psi

Tensile Strength: Yield (Proof)

310 MPa 45 x 103 psi

Thermal Properties

Latent Heat of Fusion

330 J/g

Maximum Temperature: Mechanical

960 °C 1770 °F

Melting Completion (Liquidus)

1520 °C 2760 °F

Melting Onset (Solidus)

1460 °C 2670 °F

Specific Heat Capacity

430 J/kg-K 0.1 BTU/lb-°F

Thermal Expansion

12 µm/m-K

Otherwise Unclassified Properties

Base Metal Price

70 % relative

Density

8.8 g/cm3 550 lb/ft3

Embodied Carbon

12 kg CO2/kg material

Embodied Energy

170 MJ/kg 71 x 103 BTU/lb

Embodied Water

290 L/kg 35 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

110 MJ/m3

Resilience: Unit (Modulus of Resilience)

220 kJ/m3

Stiffness to Weight: Axial

13 points

Stiffness to Weight: Bending

23 points

Strength to Weight: Axial

18 points

Strength to Weight: Bending

17 points

Thermal Shock Resistance

16 points

Alloy Composition

Nickel (Ni) 60.1 to 70
Chromium (Cr) 15 to 17.5
Molybdenum (Mo) 15 to 17.5
Iron (Fe) 0 to 2.0
Manganese (Mn) 0 to 1.0
Tungsten (W) 0 to 1.0
Silicon (Si) 0 to 0.8
Phosphorus (P) 0 to 0.030
Sulfur (S) 0 to 0.030
Carbon (C) 0 to 0.020

All values are % weight. Ranges represent what is permitted under applicable standards.

Followup Questions

Similar Alloys

Further Reading

ASTM A494: Standard Specification for Castings, Nickel and Nickel Alloy

Microstructure of Superalloys, Madeleine Durand-Charre, 1998

Engineering Properties of Nickel and Nickel Alloys, John L. Everhart, 1971

Nickel Alloys, Ulrich Heubner (editor), 1998