# 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 10 ^{6} psi*

Elongation at Break

23 *%*

Fatigue Strength

190 *MPa* 27 *x 10 ^{3} psi*

Poisson's Ratio

0.29

Shear Modulus

83 *GPa* 12 *x 10 ^{6} psi*

Tensile Strength: Ultimate (UTS)

560 *MPa* 82 *x 10 ^{3} psi*

Tensile Strength: Yield (Proof)

310 *MPa* 45 *x 10 ^{3} 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/cm ^{3}* 550

*lb/ft*

^{3}Embodied Carbon

12 *kg CO _{2}/kg material*

Embodied Energy

170 *MJ/kg* 71 *x 10 ^{3} BTU/lb*

Embodied Water

290 *L/kg* 35 *gal/lb*

## Common Calculations

Resilience: Ultimate (Unit Rupture Work)

110 *MJ/m ^{3}*

Resilience: Unit (Modulus of Resilience)

220 *kJ/m ^{3}*

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

Ni | 60.1 to 70 | |

Cr | 15 to 17.5 | |

Mo | 15 to 17.5 | |

Fe | 0 to 2.0 | |

Mn | 0 to 1.0 | |

W | 0 to 1.0 | |

Si | 0 to 0.8 | |

P | 0 to 0.030 | |

S | 0 to 0.030 | |

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