# UNS N07750 Nickel Alloy

N07750 nickel is a nickel alloy formulated for primary forming into wrought products. It has a moderately high tensile strength and a moderately low ductility among wrought nickels. The graph bars on the material properties cards below compare N07750 nickel to: wrought 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

190 *GPa* 27 *x 10 ^{6} psi*

Elongation at Break

25 *%*

Fatigue Strength

520 *MPa* 76 *x 10 ^{3} psi*

Poisson's Ratio

0.29

Shear Modulus

73 *GPa* 11 *x 10 ^{6} psi*

Shear Strength

770 *MPa* 110 *x 10 ^{3} psi*

Tensile Strength: Ultimate (UTS)

1200 *MPa* 170 *x 10 ^{3} psi*

Tensile Strength: Yield (Proof)

820 *MPa* 120 *x 10 ^{3} psi*

## Thermal Properties

Curie Temperature

-130 *°C* -190 *°F*

Latent Heat of Fusion

310 *J/g*

Maximum Temperature: Mechanical

960 *°C* 1760 *°F*

Melting Completion (Liquidus)

1430 *°C* 2610 *°F*

Melting Onset (Solidus)

1400 *°C* 2540 *°F*

Specific Heat Capacity

460 *J/kg-K* 0.11 *BTU/lb-°F*

Thermal Conductivity

13 *W/m-K* 7.3 *BTU/h-ft-°F*

Thermal Expansion

12 *µm/m-K*

## Electrical Properties

Electrical Conductivity: Equal Volume

1.4 *% IACS*

Electrical Conductivity: Equal Weight (Specific)

1.5 *% IACS*

## Otherwise Unclassified Properties

Base Metal Price

60 *% relative*

Density

8.4 *g/cm ^{3}* 520

*lb/ft*

^{3}Embodied Carbon

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

Embodied Energy

150 *MJ/kg* 64 *x 10 ^{3} BTU/lb*

Embodied Water

260 *L/kg* 31 *gal/lb*

## Common Calculations

Resilience: Ultimate (Unit Rupture Work)

270 *MJ/m ^{3}*

Resilience: Unit (Modulus of Resilience)

1770 *kJ/m ^{3}*

Stiffness to Weight: Axial

13 *points*

Stiffness to Weight: Bending

23 *points*

Strength to Weight: Axial

40 *points*

Strength to Weight: Bending

30 *points*

Thermal Diffusivity

3.3 *mm ^{2}/s*

Thermal Shock Resistance

36 *points*

## Alloy Composition

Ni | 70 to 77.7 | |

Cr | 14 to 17 | |

Fe | 5.0 to 9.0 | |

Ti | 2.3 to 2.8 | |

Nb | 0.7 to 1.2 | |

Al | 0.4 to 1.0 | |

Mn | 0 to 1.0 | |

Co | 0 to 1.0 | |

Si | 0 to 0.5 | |

Cu | 0 to 0.5 | |

C | 0 to 0.080 | |

S | 0 to 0.010 |

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

## Followup Questions

## Similar Alloys

## Further Reading

Welding Metallurgy and Weldability of Nickel-Base Alloys, John C. Lippold et al., 2009

Metallic Materials: Physical, Mechanical, and Corrosion Properties, Philip A. Schweitzer, 2003

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

Nickel Alloys, Ulrich Heubner (editor), 1998