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AZ81A Magnesium vs. C82000 Copper

AZ81A magnesium belongs to the magnesium alloys classification, while C82000 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 C82000 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
45
Tensile Strength: Ultimate (UTS), MPa 160 to 240
350 to 690
Tensile Strength: Yield (Proof), MPa 84
140 to 520

Thermal Properties

Latent Heat of Fusion, J/g 350
220
Maximum Temperature: Mechanical, °C 130
220
Melting Completion (Liquidus), °C 600
1090
Melting Onset (Solidus), °C 500
970
Specific Heat Capacity, J/kg-K 990
390
Thermal Conductivity, W/m-K 84
260
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
60
Density, g/cm3 1.7
8.9
Embodied Carbon, kg CO2/kg material 23
5.0
Embodied Energy, MJ/kg 160
77
Embodied Water, L/kg 990
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.0 to 17
51 to 55
Resilience: Unit (Modulus of Resilience), kJ/m3 77 to 78
80 to 1120
Stiffness to Weight: Axial, points 15
7.5
Stiffness to Weight: Bending, points 70
18
Strength to Weight: Axial, points 26 to 39
11 to 22
Strength to Weight: Bending, points 38 to 50
12 to 20
Thermal Diffusivity, mm2/s 50
76
Thermal Shock Resistance, points 9.1 to 14
12 to 24

Alloy Composition


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Aluminum (Al), % 7.0 to 8.1
0 to 0.1
Beryllium (Be), % 0
0.45 to 0.8
Chromium (Cr), % 0
0 to 0.1
Cobalt (Co), % 0
2.2 to 2.7
Copper (Cu), % 0 to 0.1
95.2 to 97.4
Iron (Fe), % 0
0 to 0.1
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 to 0.15
Tin (Sn), % 0
0 to 0.1
Zinc (Zn), % 0.4 to 1.0
0 to 0.1
Residuals, % 0 to 0.3
0 to 0.5

Comparable Variants