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AZ91B Magnesium vs. C55283 Copper

AZ91B magnesium belongs to the magnesium alloys classification, while C55283 copper belongs to the copper alloys. There are 18 material properties with values for both materials. Properties with values for just one material (16, 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 AZ91B magnesium and the bottom bar is C55283 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
100
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 18
39
Tensile Strength: Ultimate (UTS), MPa 240
190

Thermal Properties

Latent Heat of Fusion, J/g 360
190
Maximum Temperature: Mechanical, °C 130
200
Melting Completion (Liquidus), °C 600
720
Melting Onset (Solidus), °C 470
640
Specific Heat Capacity, J/kg-K 990
400
Thermal Expansion, µm/m-K 26
16

Otherwise Unclassified Properties

Density, g/cm3 1.7
8.6
Embodied Carbon, kg CO2/kg material 22
7.9
Embodied Energy, MJ/kg 160
120

Common Calculations

Stiffness to Weight: Axial, points 15
6.8
Stiffness to Weight: Bending, points 69
18
Strength to Weight: Axial, points 38
6.1
Strength to Weight: Bending, points 49
8.5
Thermal Shock Resistance, points 14
8.0

Alloy Composition


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Aluminum (Al), % 8.3 to 9.7
0
Copper (Cu), % 0 to 0.35
86.2 to 87.2
Magnesium (Mg), % 87.9 to 91.2
0
Manganese (Mn), % 0.13 to 0.5
0
Nickel (Ni), % 0 to 0.030
0
Phosphorus (P), % 0
7.0 to 7.5
Silicon (Si), % 0 to 0.5
0
Silver (Ag), % 0
5.8 to 6.2
Zinc (Zn), % 0.35 to 1.0
0
Residuals, % 0
0 to 0.15