# Full-Hard Type 2 Iron-Nickel Soft Magnetic Alloy

Full-hard Type 2 magnetic alloy is Type 2 magnetic alloy in the full-hard temper. The graph bars on the material properties cards below compare full-hard Type 2 magnetic alloy to: otherwise unclassified iron alloys (top), all iron 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

2.0 *%*

Poisson's Ratio

0.3

Shear Modulus

72 *GPa* 10 *x 10 ^{6} psi*

Tensile Strength: Ultimate (UTS)

910 *MPa* 130 *x 10 ^{3} psi*

Tensile Strength: Yield (Proof)

870 *MPa* 130 *x 10 ^{3} psi*

## Thermal Properties

Curie Temperature

480 *°C* 900 *°F*

Latent Heat of Fusion

270 *J/g*

Melting Completion (Liquidus)

1420 *°C* 2580 *°F*

Melting Onset (Solidus)

1370 *°C* 2500 *°F*

Specific Heat Capacity

460 *J/kg-K* 0.11 *BTU/lb-°F*

Thermal Expansion

12 *µm/m-K*

## Electrical Properties

Electrical Conductivity: Equal Volume

3.9 *% IACS*

Electrical Conductivity: Equal Weight (Specific)

4.2 *% IACS*

## Otherwise Unclassified Properties

Base Metal Price

33 *% relative*

Density

8.4 *g/cm ^{3}* 520

*lb/ft*

^{3}Embodied Carbon

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

Embodied Energy

81 *MJ/kg* 35 *x 10 ^{3} BTU/lb*

Embodied Water

140 *L/kg* 17 *gal/lb*

## Common Calculations

Resilience: Ultimate (Unit Rupture Work)

18 *MJ/m ^{3}*

Resilience: Unit (Modulus of Resilience)

2010 *kJ/m ^{3}*

Stiffness to Weight: Axial

12 *points*

Stiffness to Weight: Bending

23 *points*

Strength to Weight: Axial

30 *points*

Strength to Weight: Bending

25 *points*

Thermal Shock Resistance

29 *points*

## Alloy Composition

Fe | 48.2 to 53 | |

Ni | 47 to 49 | |

Mn | 0 to 0.8 | |

Si | 0 to 0.5 | |

Co | 0 to 0.5 | |

Cr | 0 to 0.3 | |

Mo | 0 to 0.3 | |

Cu | 0 to 0.3 | |

C | 0 to 0.050 | |

S | 0 to 0.030 | |

P | 0 to 0.010 |

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

## Followup Questions

## Further Reading

ASTM A753: Standard Specification for Wrought Nickel-Iron Soft Magnetic Alloys (UNS K94490, K94840, N14076, N14080)

Properties and Selection: Irons, Steels and High Performance Alloys, ASM Handbook vol. 1, ASM International, 1993

CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015