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ZC63A (ZC63A-T6, M16331) Magnesium

ZC63A magnesium is a magnesium alloy. It is typically furnished in 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 low embodied energy among magnesium alloys. In addition, it has the highest density and a moderately 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).

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

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 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 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
Aluminum (Al) 0 to 0.2
Iron (Fe) 0 to 0.050
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

ISO 16220: Magnesium and magnesium alloys - Magnesium alloy ingots and castings

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.

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