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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 106 psi

Elongation at Break

3.3 %

Fatigue Strength

94 MPa 14 x 103 psi

Poisson's Ratio

0.29

Shear Modulus

19 GPa 2.7 x 106 psi

Shear Strength

130 MPa 18 x 103 psi

Tensile Strength: Ultimate (UTS)

220 MPa 32 x 103 psi

Tensile Strength: Yield (Proof)

130 MPa 19 x 103 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/cm3 130 lb/ft3

Embodied Carbon

22 kg CO2/kg material

Embodied Energy

150 MJ/kg 64 x 103 BTU/lb

Embodied Water

920 L/kg 110 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

6.3 MJ/m3

Resilience: Unit (Modulus of Resilience)

190 kJ/m3

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 mm2/s

Thermal Shock Resistance

12 points

Alloy Composition

Magnesium (Mg) 89.2 to 91.9
Zinc (Zn) 5.5 to 6.5
Copper (Cu) 2.4 to 3.0
Manganese (Mn) 0.25 to 0.75
Silicon (Si) 0 to 0.2
Nickel (Ni) 0 to 0.010
Residuals 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