# EN 2.4851 (NiCr23Fe) Nickel Alloy

EN 2.4851 nickel is a nickel alloy formulated for primary forming into wrought products. Cited properties are appropriate for the solution annealed (AT) condition. 2.4851 is the EN numeric designation for this material. NiCr23Fe is the EN chemical designation.

It has a moderately high heat capacity among wrought nickels. In addition, it has a moderately low base cost and a moderately low tensile strength.

The graph bars on the material properties cards below compare EN 2.4851 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

190

Elastic (Young's, Tensile) Modulus

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

Elongation at Break

34 *%*

Fatigue Strength

170 *MPa* 24 *x 10 ^{3} psi*

Poisson's Ratio

0.28

Shear Modulus

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

Shear Strength

430 *MPa* 63 *x 10 ^{3} psi*

Tensile Strength: Ultimate (UTS)

650 *MPa* 94 *x 10 ^{3} psi*

Tensile Strength: Yield (Proof)

230 *MPa* 33 *x 10 ^{3} psi*

## Thermal Properties

Latent Heat of Fusion

320 *J/g*

Maximum Temperature: Mechanical

1200 *°C* 2190 *°F*

Melting Completion (Liquidus)

1360 *°C* 2480 *°F*

Melting Onset (Solidus)

1310 *°C* 2400 *°F*

Specific Heat Capacity

470 *J/kg-K* 0.11 *BTU/lb-°F*

Thermal Conductivity

11 *W/m-K* 6.5 *BTU/h-ft-°F*

Thermal Expansion

14 *µm/m-K*

## Electrical Properties

Electrical Conductivity: Equal Volume

1.4 *% IACS*

Electrical Conductivity: Equal Weight (Specific)

1.6 *% IACS*

## Otherwise Unclassified Properties

Base Metal Price

49 *% relative*

Density

8.2 *g/cm ^{3}* 510

*lb/ft*

^{3}Embodied Carbon

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

Embodied Energy

120 *MJ/kg* 50 *x 10 ^{3} BTU/lb*

Embodied Water

280 *L/kg* 33 *gal/lb*

## Common Calculations

Resilience: Ultimate (Unit Rupture Work)

170 *MJ/m ^{3}*

Resilience: Unit (Modulus of Resilience)

130 *kJ/m ^{3}*

Stiffness to Weight: Axial

13 *points*

Stiffness to Weight: Bending

23 *points*

Strength to Weight: Axial

22 *points*

Strength to Weight: Bending

20 *points*

Thermal Diffusivity

2.9 *mm ^{2}/s*

Thermal Shock Resistance

17 *points*

## Alloy Composition

Ni | 58 to 63 | |

Cr | 21 to 25 | |

Fe | 7.7 to 18 | |

Al | 1.0 to 1.7 | |

Mn | 0 to 1.0 | |

Si | 0 to 0.5 | |

Ti | 0 to 0.5 | |

Cu | 0 to 0.5 | |

C | 0.030 to 0.1 | |

P | 0 to 0.020 | |

S | 0 to 0.015 | |

B | 0 to 0.0060 |

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