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AZ81A Magnesium vs. C82200 Copper

AZ81A magnesium belongs to the magnesium alloys classification, while C82200 copper belongs to the copper alloys. There are 28 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 C82200 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
120
Elongation at Break, % 3.0 to 8.8
8.0 to 20
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 18
44
Tensile Strength: Ultimate (UTS), MPa 160 to 240
390 to 660
Tensile Strength: Yield (Proof), MPa 84
210 to 520

Thermal Properties

Latent Heat of Fusion, J/g 350
220
Maximum Temperature: Mechanical, °C 130
230
Melting Completion (Liquidus), °C 600
1080
Melting Onset (Solidus), °C 500
1040
Specific Heat Capacity, J/kg-K 990
390
Thermal Conductivity, W/m-K 84
180
Thermal Expansion, µm/m-K 27
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 12
45
Electrical Conductivity: Equal Weight (Specific), % IACS 65
46

Otherwise Unclassified Properties

Base Metal Price, % relative 12
55
Density, g/cm3 1.7
8.9
Embodied Carbon, kg CO2/kg material 23
4.8
Embodied Energy, MJ/kg 160
74
Embodied Water, L/kg 990
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.0 to 17
49 to 66
Resilience: Unit (Modulus of Resilience), kJ/m3 77 to 78
180 to 1130
Stiffness to Weight: Axial, points 15
7.4
Stiffness to Weight: Bending, points 70
18
Strength to Weight: Axial, points 26 to 39
12 to 20
Strength to Weight: Bending, points 38 to 50
13 to 19
Thermal Diffusivity, mm2/s 50
53
Thermal Shock Resistance, points 9.1 to 14
14 to 23

Alloy Composition

Aluminum (Al), % 7.0 to 8.1
0
Beryllium (Be), % 0
0.35 to 0.8
Cobalt (Co), % 0
0 to 0.3
Copper (Cu), % 0 to 0.1
97.4 to 98.7
Magnesium (Mg), % 89.8 to 92.5
0
Manganese (Mn), % 0.13 to 0.35
0
Nickel (Ni), % 0 to 0.010
1.0 to 2.0
Silicon (Si), % 0 to 0.3
0
Zinc (Zn), % 0.4 to 1.0
0
Residuals, % 0 to 0.3
0 to 0.5

Comparable Variants