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AZ81A Magnesium vs. C96700 Copper

AZ81A magnesium belongs to the magnesium alloys classification, while C96700 copper belongs to the copper alloys. There are 26 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is AZ81A magnesium and the bottom bar is C96700 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
140
Elongation at Break, % 3.0 to 8.8
10
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 18
53
Tensile Strength: Ultimate (UTS), MPa 160 to 240
1210
Tensile Strength: Yield (Proof), MPa 84
550

Thermal Properties

Latent Heat of Fusion, J/g 350
250
Maximum Temperature: Mechanical, °C 130
310
Melting Completion (Liquidus), °C 600
1170
Melting Onset (Solidus), °C 500
1110
Specific Heat Capacity, J/kg-K 990
400
Thermal Conductivity, W/m-K 84
30
Thermal Expansion, µm/m-K 27
15

Otherwise Unclassified Properties

Base Metal Price, % relative 12
90
Density, g/cm3 1.7
8.8
Embodied Carbon, kg CO2/kg material 23
9.5
Embodied Energy, MJ/kg 160
140
Embodied Water, L/kg 990
280

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.0 to 17
99
Resilience: Unit (Modulus of Resilience), kJ/m3 77 to 78
1080
Stiffness to Weight: Axial, points 15
8.9
Stiffness to Weight: Bending, points 70
20
Strength to Weight: Axial, points 26 to 39
38
Strength to Weight: Bending, points 38 to 50
29
Thermal Diffusivity, mm2/s 50
8.5
Thermal Shock Resistance, points 9.1 to 14
40

Alloy Composition


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Aluminum (Al), % 7.0 to 8.1
0
Beryllium (Be), % 0
1.1 to 1.2
Copper (Cu), % 0 to 0.1
62.4 to 68.8
Iron (Fe), % 0
0.4 to 1.0
Lead (Pb), % 0
0 to 0.010
Magnesium (Mg), % 89.8 to 92.5
0
Manganese (Mn), % 0.13 to 0.35
0.4 to 1.0
Nickel (Ni), % 0 to 0.010
29 to 33
Silicon (Si), % 0 to 0.3
0 to 0.15
Titanium (Ti), % 0
0.15 to 0.35
Zinc (Zn), % 0.4 to 1.0
0
Zirconium (Zr), % 0
0.15 to 0.35
Residuals, % 0 to 0.3
0 to 0.5