# ZC63A (ZC63A-T6, M16331) Magnesium

ZC63A magnesium is a magnesium alloy. Cited properties are appropriate for the T6 temper. To achieve this temper, the metal is solution heat-treated and artificially aged until it meets standard mechanical property requirements. ZC63A is the ASTM designation for this material. M16331 is the UNS number.

It has a very high density among magnesium alloys. In addition, it has a very low embodied energy and a very high electrical conductivity.

The graph bars on the material properties cards below compare ZC63A 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

60

Elastic (Young's, Tensile) Modulus

48 *GPa* 7.0 *x 10 ^{6} psi*

Elongation at Break

3.3 *%*

Fatigue Strength

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

Poisson's Ratio

0.29

Shear Modulus

19 *GPa* 2.7 *x 10 ^{6} psi*

Shear Strength

130 *MPa* 18 *x 10 ^{3} psi*

Tensile Strength: Ultimate (UTS)

220 *MPa* 32 *x 10 ^{3} psi*

Tensile Strength: Yield (Proof)

130 *MPa* 19 *x 10 ^{3} psi*

## Thermal Properties

Latent Heat of Fusion

330 *J/g*

Maximum Temperature: Mechanical

98 *°C* 210 *°F*

Melting Completion (Liquidus)

550 *°C* 1020 *°F*

Melting Onset (Solidus)

470 *°C* 870 *°F*

Solidification (Pattern Maker's) Shrinkage

1.6 *%*

Specific Heat Capacity

950 *J/kg-K* 0.23 *BTU/lb-°F*

Thermal Conductivity

120 *W/m-K* 67 *BTU/h-ft-°F*

Thermal Expansion

26 *µm/m-K*

## Electrical Properties

Electrical Conductivity: Equal Volume

32 *% IACS*

Electrical Conductivity: Equal Weight (Specific)

140 *% IACS*

## Otherwise Unclassified Properties

Base Metal Price

13 *% relative*

Density

2.1 *g/cm ^{3}* 130

*lb/ft*

^{3}Embodied Carbon

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

Embodied Energy

150 *MJ/kg* 64 *x 10 ^{3} BTU/lb*

Embodied Water

920 *L/kg* 110 *gal/lb*

## Common Calculations

Resilience: Ultimate (Unit Rupture Work)

6.3 *MJ/m ^{3}*

Resilience: Unit (Modulus of Resilience)

190 *kJ/m ^{3}*

Stiffness to Weight: Axial

13 *points*

Stiffness to Weight: Bending

58 *points*

Strength to Weight: Axial

29 *points*

Strength to Weight: Bending

38 *points*

Thermal Diffusivity

58 *mm ^{2}/s*

Thermal Shock Resistance

12 *points*

## Alloy Composition

Mg | 89.2 to 91.9 | |

Zn | 5.5 to 6.5 | |

Cu | 2.4 to 3.0 | |

Mn | 0.25 to 0.75 | |

Si | 0 to 0.2 | |

Ni | 0 to 0.010 | |

res. | 0 to 0.3 |

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

## Followup Questions

## Similar Alloys

## Further Reading

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