# EN 2.4951 (NiCr20Ti) Nickel Alloy

EN 2.4951 nickel is a nickel alloy formulated for primary forming into wrought products. Cited properties are appropriate for the solution annealed (AT) condition. 2.4951 is the EN numeric designation for this material. NiCr20Ti is the EN chemical designation.

The graph bars on the material properties cards below compare EN 2.4951 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

Brinell Hardness

200

Elastic (Young's, Tensile) Modulus

190 *GPa* 28 *x 10 ^{6} psi*

Elongation at Break

34 *%*

Fatigue Strength

200 *MPa* 28 *x 10 ^{3} psi*

Poisson's Ratio

0.29

Shear Modulus

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

Shear Strength

500 *MPa* 72 *x 10 ^{3} psi*

Tensile Strength: Ultimate (UTS)

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

Tensile Strength: Yield (Proof)

270 *MPa* 39 *x 10 ^{3} psi*

## Thermal Properties

Latent Heat of Fusion

320 *J/g*

Maximum Temperature: Mechanical

1150 *°C* 2100 *°F*

Melting Completion (Liquidus)

1360 *°C* 2470 *°F*

Melting Onset (Solidus)

1310 *°C* 2390 *°F*

Specific Heat Capacity

460 *J/kg-K* 0.11 *BTU/lb-°F*

Thermal Conductivity

12 *W/m-K* 6.9 *BTU/h-ft-°F*

Thermal Expansion

12 *µm/m-K*

## Electrical Properties

Electrical Conductivity: Equal Volume

1.6 *% IACS*

Electrical Conductivity: Equal Weight (Specific)

1.7 *% IACS*

## Otherwise Unclassified Properties

Base Metal Price

60 *% relative*

Density

8.5 *g/cm ^{3}* 530

*lb/ft*

^{3}Embodied Carbon

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

Embodied Energy

130 *MJ/kg* 56 *x 10 ^{3} BTU/lb*

Embodied Water

280 *L/kg* 34 *gal/lb*

## Common Calculations

Resilience: Ultimate (Unit Rupture Work)

200 *MJ/m ^{3}*

Resilience: Unit (Modulus of Resilience)

190 *kJ/m ^{3}*

Stiffness to Weight: Axial

13 *points*

Stiffness to Weight: Bending

23 *points*

Strength to Weight: Axial

25 *points*

Strength to Weight: Bending

22 *points*

Thermal Diffusivity

3.1 *mm ^{2}/s*

Thermal Shock Resistance

23 *points*

## Alloy Composition

Ni | 65.4 to 81.7 | |

Cr | 18 to 21 | |

Fe | 0 to 5.0 | |

Co | 0 to 5.0 | |

Mn | 0 to 1.0 | |

Si | 0 to 1.0 | |

Ti | 0.2 to 0.6 | |

Cu | 0 to 0.5 | |

Al | 0 to 0.3 | |

C | 0.080 to 0.15 | |

P | 0 to 0.020 | |

S | 0 to 0.015 |

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

## Followup Questions

## Similar Alloys

## Further Reading

EN 10095: Heat resisting steels and nickel alloys

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

Nickel Alloys, Ulrich Heubner (editor), 1998