# AZ80A-T6 Magnesium

AZ80A-T6 magnesium is AZ80A 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. It has the lowest strength and highest ductility compared to the other variants of AZ80A magnesium.

The graph bars on the material properties cards below compare AZ80A-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

Elastic (Young's, Tensile) Modulus

46 *GPa* 6.6 *x 10 ^{6} psi*

Elongation at Break

8.5 *%*

Fatigue Strength

140 *MPa* 20 *x 10 ^{3} psi*

Poisson's Ratio

0.29

Shear Modulus

18 *GPa* 2.6 *x 10 ^{6} psi*

Shear Strength

170 *MPa* 25 *x 10 ^{3} psi*

Tensile Strength: Ultimate (UTS)

320 *MPa* 46 *x 10 ^{3} psi*

Tensile Strength: Yield (Proof)

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

## Thermal Properties

Latent Heat of Fusion

350 *J/g*

Maximum Temperature: Mechanical

130 *°C* 270 *°F*

Melting Completion (Liquidus)

600 *°C* 1120 *°F*

Melting Onset (Solidus)

490 *°C* 920 *°F*

Specific Heat Capacity

990 *J/kg-K* 0.24 *BTU/lb-°F*

Thermal Conductivity

77 *W/m-K* 45 *BTU/h-ft-°F*

Thermal Expansion

26 *µm/m-K*

## Electrical Properties

Electrical Conductivity: Equal Volume

11 *% IACS*

Electrical Conductivity: Equal Weight (Specific)

59 *% IACS*

## Otherwise Unclassified Properties

Base Metal Price

12 *% relative*

Density

1.7 *g/cm ^{3}* 110

*lb/ft*

^{3}Embodied Carbon

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

Embodied Energy

160 *MJ/kg* 68 *x 10 ^{3} BTU/lb*

Embodied Water

990 *L/kg* 120 *gal/lb*

## Common Calculations

Resilience: Ultimate (Unit Rupture Work)

24 *MJ/m ^{3}*

Resilience: Unit (Modulus of Resilience)

550 *kJ/m ^{3}*

Stiffness to Weight: Axial

15 *points*

Stiffness to Weight: Bending

69 *points*

Strength to Weight: Axial

51 *points*

Strength to Weight: Bending

60 *points*

Thermal Diffusivity

45 *mm ^{2}/s*

Thermal Shock Resistance

19 *points*

## Alloy Composition

Mg | 89 to 91.9 | |

Al | 7.8 to 9.2 | |

Zn | 0.2 to 0.8 | |

Mn | 0.12 to 0.5 | |

Si | 0 to 0.1 | |

Cu | 0 to 0.050 | |

Ni | 0 to 0.0050 | |

Fe | 0 to 0.0050 | |

res. | 0 to 0.3 |

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

## Followup Questions

## Further Reading

ASTM B91: Standard Specification for Magnesium-Alloy Forgings

ISO 3116: Magnesium and magnesium alloys - Wrought magnesium alloys

Welding and Joining of Magnesium Alloys, Liming Liu (editor), 2010

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