# Grade CW6M (J30107) Cast Nickel

Grade CW6M nickel is a nickel alloy formulated for casting. Cited properties are appropriate for the heat treated (HT) condition. CW6M is the ASTM designation for this material. J30107 is the UNS number. The graph bars on the material properties cards below compare grade CW6M 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

220 *GPa* 32 *x 10 ^{6} psi*

Elongation at Break

29 *%*

Fatigue Strength

210 *MPa* 30 *x 10 ^{3} psi*

Poisson's Ratio

0.29

Shear Modulus

84 *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

970 *°C* 1780 *°F*

Melting Completion (Liquidus)

1530 *°C* 2780 *°F*

Melting Onset (Solidus)

1470 *°C* 2680 *°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

65 *% relative*

Density

8.8 *g/cm ^{3}* 550

*lb/ft*

^{3}Embodied Carbon

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

Embodied Energy

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

Embodied Water

300 *L/kg* 35 *gal/lb*

## Common Calculations

Resilience: Ultimate (Unit Rupture Work)

140 *MJ/m ^{3}*

Resilience: Unit (Modulus of Resilience)

220 *kJ/m ^{3}*

Stiffness to Weight: Axial

14 *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 | 54.9 to 66 | |

Cr | 17 to 20 | |

Mo | 17 to 20 | |

Fe | 0 to 3.0 | |

Mn | 0 to 1.0 | |

Si | 0 to 1.0 | |

C | 0 to 0.070 | |

P | 0 to 0.040 | |

S | 0 to 0.030 |

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

Machining of Stainless Steels and Super Alloys: Traditional and Nontraditional Techniques, Helmi A. Youssef, 2016

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

Nickel Alloys, Ulrich Heubner (editor), 1998