# WE54A-T6 Magnesium

WE54A-T6 magnesium is WE54A magnesium in the T6 temper. To achieve this temper, the metal is solution heat-treated and artificially aged until it meets standard mechanical property requirements. The graph bars on the material properties cards below compare WE54A-T6 magnesium to other magnesium alloys (top) 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

85

Compressive (Crushing) Strength

410 *MPa* 59 *x 10 ^{3} psi*

Elastic (Young's, Tensile) Modulus

44 *GPa* 6.4 *x 10 ^{6} psi*

Elongation at Break

4.3 *%*

Fatigue Strength

98 *MPa* 14 *x 10 ^{3} psi*

Fracture Toughness

14 *MPa-m ^{1/2}* 13

*x 10*

^{3}psi-in^{1/2}Poisson's Ratio

0.29

Shear Modulus

17 *GPa* 2.5 *x 10 ^{6} psi*

Shear Strength

150 *MPa* 22 *x 10 ^{3} psi*

Tensile Strength: Ultimate (UTS)

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

Tensile Strength: Yield (Proof)

180 *MPa* 27 *x 10 ^{3} psi*

## Thermal Properties

Latent Heat of Fusion

330 *J/g*

Maximum Temperature: Mechanical

170 *°C* 340 *°F*

Melting Completion (Liquidus)

640 *°C* 1180 *°F*

Melting Onset (Solidus)

570 *°C* 1060 *°F*

Solidification (Pattern Maker's) Shrinkage

1.6 *%*

Specific Heat Capacity

960 *J/kg-K* 0.23 *BTU/lb-°F*

Thermal Conductivity

52 *W/m-K* 30 *BTU/h-ft-°F*

Thermal Expansion

25 *µm/m-K*

## Electrical Properties

Electrical Conductivity: Equal Volume

10 *% IACS*

Electrical Conductivity: Equal Weight (Specific)

47 *% IACS*

## Otherwise Unclassified Properties

Base Metal Price

34 *% relative*

Density

1.9 *g/cm ^{3}* 120

*lb/ft*

^{3}Embodied Carbon

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

Embodied Energy

260 *MJ/kg* 110 *x 10 ^{3} BTU/lb*

Embodied Water

900 *L/kg* 110 *gal/lb*

## Common Calculations

Resilience: Ultimate (Unit Rupture Work)

10 *MJ/m ^{3}*

Resilience: Unit (Modulus of Resilience)

380 *kJ/m ^{3}*

Stiffness to Weight: Axial

13 *points*

Stiffness to Weight: Bending

62 *points*

Strength to Weight: Axial

39 *points*

Strength to Weight: Bending

49 *points*

Thermal Diffusivity

28 *mm ^{2}/s*

Thermal Shock Resistance

18 *points*

## Alloy Composition

Mg | 88.7 to 93.4 | |

Y | 4.8 to 5.5 | |

Zr | 0.4 to 1.0 | |

Zn | 0 to 0.2 | |

Li | 0 to 0.2 | |

Mn | 0 to 0.030 | |

Cu | 0 to 0.030 | |

Si | 0 to 0.010 | |

Fe | 0 to 0.010 | |

Ni | 0 to 0.0050 | |

rare e. | 1.5 to 4.0 | |

res. | 0 to 0.3 |

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

## Followup Questions

## Further Reading

Magnesium Alloys Containing Rare Earth Metals: Structure and Properties, L.L. Rokhlin, 2003

ISO 3116: Magnesium and magnesium alloys - Wrought magnesium alloys

ASTM B80: Standard Specification for Magnesium-Alloy Sand Castings

Essential Readings in Magnesium Technology, Suveen N. Mathaudhu et al. (editors), 2014

Environmental Degradation of Advanced and Traditional Engineering Materials, Lloyd H. Hihara et al., 2014.

Advanced Materials in Automotive Engineering, Jason Rowe (editor), 2012

Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, ASM Handbook vol. 2, ASM International, 1993