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AZ81A Magnesium vs. C71500 Copper-nickel

AZ81A magnesium belongs to the magnesium alloys classification, while C71500 copper-nickel belongs to the copper alloys. There are 24 material properties with values for both materials. Properties with values for just one material (11, 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 C71500 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
140
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 18
52
Tensile Strength: Ultimate (UTS), MPa 160 to 240
380 to 620

Thermal Properties

Latent Heat of Fusion, J/g 350
230
Maximum Temperature: Mechanical, °C 130
260
Melting Completion (Liquidus), °C 600
1240
Melting Onset (Solidus), °C 500
1170
Specific Heat Capacity, J/kg-K 990
400
Thermal Conductivity, W/m-K 84
28
Thermal Expansion, µm/m-K 27
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 12
4.6
Electrical Conductivity: Equal Weight (Specific), % IACS 65
4.7

Otherwise Unclassified Properties

Base Metal Price, % relative 12
41
Density, g/cm3 1.7
8.9
Embodied Carbon, kg CO2/kg material 23
5.1
Embodied Energy, MJ/kg 160
74
Embodied Water, L/kg 990
280

Common Calculations

Stiffness to Weight: Axial, points 15
8.6
Stiffness to Weight: Bending, points 70
19
Strength to Weight: Axial, points 26 to 39
12 to 19
Strength to Weight: Bending, points 38 to 50
13 to 18
Thermal Diffusivity, mm2/s 50
7.7
Thermal Shock Resistance, points 9.1 to 14
12 to 20

Alloy Composition


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Aluminum (Al), % 7.0 to 8.1
0
Copper (Cu), % 0 to 0.1
63.5 to 70.6
Iron (Fe), % 0
0.4 to 1.0
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 89.8 to 92.5
0
Manganese (Mn), % 0.13 to 0.35
0 to 1.0
Nickel (Ni), % 0 to 0.010
29 to 33
Silicon (Si), % 0 to 0.3
0
Zinc (Zn), % 0.4 to 1.0
0 to 1.0
Residuals, % 0 to 0.3
0 to 0.5