# ZK60A-T6 Magnesium

ZK60A-T6 magnesium is ZK60A 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 highest strength and lowest ductility compared to the other variants of ZK60A magnesium.

The graph bars on the material properties cards below compare ZK60A-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

4.5 *%*

Fatigue Strength

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

Poisson's Ratio

0.29

Shear Modulus

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

Shear Strength

190 *MPa* 28 *x 10 ^{3} psi*

Tensile Strength: Ultimate (UTS)

330 *MPa* 48 *x 10 ^{3} psi*

Tensile Strength: Yield (Proof)

250 *MPa* 37 *x 10 ^{3} psi*

## Thermal Properties

Latent Heat of Fusion

330 *J/g*

Maximum Temperature: Mechanical

120 *°C* 250 *°F*

Melting Completion (Liquidus)

600 *°C* 1110 *°F*

Melting Onset (Solidus)

550 *°C* 1020 *°F*

Specific Heat Capacity

960 *J/kg-K* 0.23 *BTU/lb-°F*

Thermal Conductivity

120 *W/m-K* 69 *BTU/h-ft-°F*

Thermal Expansion

26 *µm/m-K*

## Electrical Properties

Electrical Conductivity: Equal Volume

30 *% IACS*

Electrical Conductivity: Equal Weight (Specific)

140 *% IACS*

## Otherwise Unclassified Properties

Base Metal Price

13 *% relative*

Density

1.9 *g/cm ^{3}* 120

*lb/ft*

^{3}Embodied Carbon

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

Embodied Energy

160 *MJ/kg* 70 *x 10 ^{3} BTU/lb*

Embodied Water

940 *L/kg* 110 *gal/lb*

## Common Calculations

Resilience: Ultimate (Unit Rupture Work)

14 *MJ/m ^{3}*

Resilience: Unit (Modulus of Resilience)

690 *kJ/m ^{3}*

Stiffness to Weight: Axial

13 *points*

Stiffness to Weight: Bending

63 *points*

Strength to Weight: Axial

49 *points*

Strength to Weight: Bending

56 *points*

Thermal Diffusivity

66 *mm ^{2}/s*

Thermal Shock Resistance

20 *points*

## Alloy Composition

Mg | 92.5 to 94.8 | |

Zn | 4.8 to 6.2 | |

Zr | 0.45 to 1.0 | |

res. | 0 to 0.3 |

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

## Followup Questions

## Further Reading

Advances in Wrought Magnesium Alloys: Fundamentals of Processing, Properties and Applications, Colleen Bettles and Matthew Barnett (editors), 2012

ASTM B91: Standard Specification for Magnesium-Alloy Forgings

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

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