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AZ81A Magnesium vs. C82600 Copper

AZ81A magnesium belongs to the magnesium alloys classification, while C82600 copper belongs to the copper alloys. There are 27 material properties with values for both materials. Properties with values for just one material (6, 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 C82600 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
120
Elongation at Break, % 3.0 to 8.8
1.0 to 20
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 18
46
Tensile Strength: Ultimate (UTS), MPa 160 to 240
570 to 1140
Tensile Strength: Yield (Proof), MPa 84
320 to 1070

Thermal Properties

Latent Heat of Fusion, J/g 350
240
Maximum Temperature: Mechanical, °C 130
300
Melting Completion (Liquidus), °C 600
950
Melting Onset (Solidus), °C 500
860
Specific Heat Capacity, J/kg-K 990
390
Thermal Conductivity, W/m-K 84
130
Thermal Expansion, µm/m-K 27
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 12
19
Electrical Conductivity: Equal Weight (Specific), % IACS 65
20

Otherwise Unclassified Properties

Density, g/cm3 1.7
8.7
Embodied Carbon, kg CO2/kg material 23
11
Embodied Energy, MJ/kg 160
180
Embodied Water, L/kg 990
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.0 to 17
11 to 97
Resilience: Unit (Modulus of Resilience), kJ/m3 77 to 78
430 to 4690
Stiffness to Weight: Axial, points 15
7.8
Stiffness to Weight: Bending, points 70
19
Strength to Weight: Axial, points 26 to 39
18 to 36
Strength to Weight: Bending, points 38 to 50
17 to 28
Thermal Diffusivity, mm2/s 50
37
Thermal Shock Resistance, points 9.1 to 14
19 to 39

Alloy Composition

Aluminum (Al), % 7.0 to 8.1
0 to 0.15
Beryllium (Be), % 0
2.3 to 2.6
Chromium (Cr), % 0
0 to 0.1
Cobalt (Co), % 0
0.35 to 0.65
Copper (Cu), % 0 to 0.1
94.9 to 97.2
Iron (Fe), % 0
0 to 0.25
Lead (Pb), % 0
0 to 0.020
Magnesium (Mg), % 89.8 to 92.5
0
Manganese (Mn), % 0.13 to 0.35
0
Nickel (Ni), % 0 to 0.010
0 to 0.2
Silicon (Si), % 0 to 0.3
0.2 to 0.35
Tin (Sn), % 0
0 to 0.1
Titanium (Ti), % 0
0 to 0.12
Zinc (Zn), % 0.4 to 1.0
0 to 0.1
Residuals, % 0 to 0.3
0 to 0.5

Comparable Variants