# AZ92A-T6 Magnesium

AZ92A-T6 magnesium is AZ92A 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 ductility compared to the other variants of AZ92A magnesium.

The graph bars on the material properties cards below compare AZ92A-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

47 *GPa* 6.8 *x 10 ^{6} psi*

Elongation at Break

2.1 *%*

Fatigue Strength

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

Poisson's Ratio

0.29

Shear Modulus

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

Shear Strength

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

Tensile Strength: Ultimate (UTS)

270 *MPa* 38 *x 10 ^{3} psi*

Tensile Strength: Yield (Proof)

140 *MPa* 21 *x 10 ^{3} psi*

## Thermal Properties

Latent Heat of Fusion

350 *J/g*

Maximum Temperature: Mechanical

130 *°C* 270 *°F*

Melting Completion (Liquidus)

590 *°C* 1100 *°F*

Melting Onset (Solidus)

440 *°C* 830 *°F*

Solidification (Pattern Maker's) Shrinkage

1.3 *%*

Specific Heat Capacity

980 *J/kg-K* 0.23 *BTU/lb-°F*

Thermal Conductivity

58 *W/m-K* 34 *BTU/h-ft-°F*

Thermal Expansion

26 *µm/m-K*

## Electrical Properties

Electrical Conductivity: Equal Volume

12 *% IACS*

Electrical Conductivity: Equal Weight (Specific)

62 *% IACS*

## Otherwise Unclassified Properties

Base Metal Price

12 *% relative*

Density

1.8 *g/cm ^{3}* 110

*lb/ft*

^{3}Embodied Carbon

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

Embodied Energy

160 *MJ/kg* 67 *x 10 ^{3} BTU/lb*

Embodied Water

980 *L/kg* 120 *gal/lb*

## Common Calculations

Resilience: Ultimate (Unit Rupture Work)

4.6 *MJ/m ^{3}*

Resilience: Unit (Modulus of Resilience)

220 *kJ/m ^{3}*

Stiffness to Weight: Axial

14 *points*

Stiffness to Weight: Bending

67 *points*

Strength to Weight: Axial

41 *points*

Strength to Weight: Bending

51 *points*

Thermal Diffusivity

33 *mm ^{2}/s*

Thermal Shock Resistance

16 *points*

## Alloy Composition

Mg | 86.7 to 90 | |

Al | 8.3 to 9.7 | |

Zn | 1.6 to 2.4 | |

Mn | 0.1 to 0.35 | |

Si | 0 to 0.3 | |

Cu | 0 to 0.25 | |

Ni | 0 to 0.010 | |

res. | 0 to 0.3 |

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

## Followup Questions

## Further Reading

ASTM B199: Standard Specification for Magnesium-Alloy Permanent Mold Castings

ASTM B403: Standard Specification for Magnesium-Alloy Investment Castings

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

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.