# WE43A-T6 Magnesium

WE43A-T6 magnesium is WE43A 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 WE43A-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

Compressive (Crushing) Strength

320 *MPa* 47 *x 10 ^{3} psi*

Elastic (Young's, Tensile) Modulus

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

Elongation at Break

5.4 *%*

Fatigue Strength

85 *MPa* 12 *x 10 ^{3} psi*

Fracture Toughness

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

*x 10*

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

0.29

Shear Modulus

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

Shear Strength

160 *MPa* 23 *x 10 ^{3} psi*

Tensile Strength: Ultimate (UTS)

250 *MPa* 36 *x 10 ^{3} psi*

Tensile Strength: Yield (Proof)

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

## Thermal Properties

Latent Heat of Fusion

330 *J/g*

Maximum Temperature: Mechanical

180 *°C* 360 *°F*

Melting Completion (Liquidus)

640 *°C* 1180 *°F*

Melting Onset (Solidus)

570 *°C* 1050 *°F*

Solidification (Pattern Maker's) Shrinkage

1.6 *%*

Specific Heat Capacity

960 *J/kg-K* 0.23 *BTU/lb-°F*

Thermal Conductivity

51 *W/m-K* 29 *BTU/h-ft-°F*

Thermal Expansion

27 *µm/m-K*

## Electrical Properties

Electrical Conductivity: Equal Volume

12 *% IACS*

Electrical Conductivity: Equal Weight (Specific)

55 *% IACS*

## Otherwise Unclassified Properties

Base Metal Price

34 *% relative*

Density

1.9 *g/cm ^{3}* 120

*lb/ft*

^{3}Embodied Carbon

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

Embodied Energy

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

Embodied Water

910 *L/kg* 110 *gal/lb*

## Common Calculations

Resilience: Ultimate (Unit Rupture Work)

12 *MJ/m ^{3}*

Resilience: Unit (Modulus of Resilience)

310 *kJ/m ^{3}*

Stiffness to Weight: Axial

13 *points*

Stiffness to Weight: Bending

61 *points*

Strength to Weight: Axial

36 *points*

Strength to Weight: Bending

46 *points*

Thermal Diffusivity

28 *mm ^{2}/s*

Thermal Shock Resistance

15 *points*

## Alloy Composition

Mg | 89.5 to 93.5 | |

Y | 3.7 to 4.3 | |

Zr | 0.4 to 1.0 | |

Zn | 0 to 0.2 | |

Li | 0 to 0.2 | |

Mn | 0 to 0.15 | |

Cu | 0 to 0.030 | |

Si | 0 to 0.010 | |

Fe | 0 to 0.010 | |

Ni | 0 to 0.0050 | |

rare e. | 2.4 to 4.4 | |

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.

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