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AZ81A Magnesium vs. C77000 Nickel Silver

AZ81A magnesium belongs to the magnesium alloys classification, while C77000 nickel silver 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 C77000 nickel silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
120
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 18
46
Tensile Strength: Ultimate (UTS), MPa 160 to 240
420 to 800

Thermal Properties

Latent Heat of Fusion, J/g 350
200
Maximum Temperature: Mechanical, °C 130
180
Melting Completion (Liquidus), °C 600
1050
Melting Onset (Solidus), °C 500
1000
Specific Heat Capacity, J/kg-K 990
400
Thermal Conductivity, W/m-K 84
29
Thermal Expansion, µm/m-K 27
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 12
5.5
Electrical Conductivity: Equal Weight (Specific), % IACS 65
6.0

Otherwise Unclassified Properties

Base Metal Price, % relative 12
31
Density, g/cm3 1.7
8.3
Embodied Carbon, kg CO2/kg material 23
4.1
Embodied Energy, MJ/kg 160
63
Embodied Water, L/kg 990
300

Common Calculations

Stiffness to Weight: Axial, points 15
8.1
Stiffness to Weight: Bending, points 70
20
Strength to Weight: Axial, points 26 to 39
14 to 27
Strength to Weight: Bending, points 38 to 50
15 to 23
Thermal Diffusivity, mm2/s 50
8.8
Thermal Shock Resistance, points 9.1 to 14
15 to 28

Alloy Composition

Aluminum (Al), % 7.0 to 8.1
0
Copper (Cu), % 0 to 0.1
53.5 to 56.5
Iron (Fe), % 0
0 to 0.25
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 89.8 to 92.5
0
Manganese (Mn), % 0.13 to 0.35
0 to 0.5
Nickel (Ni), % 0 to 0.010
16.5 to 19.5
Silicon (Si), % 0 to 0.3
0
Zinc (Zn), % 0.4 to 1.0
22.7 to 30
Residuals, % 0 to 0.3
0 to 0.5