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AZ81A Magnesium vs. C79200 Nickel Silver

AZ81A magnesium belongs to the magnesium alloys classification, while C79200 nickel silver belongs to the copper alloys. There are 24 material properties with values for both materials. Properties with values for just one material (9, 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 C79200 nickel silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
120
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 18
44
Tensile Strength: Ultimate (UTS), MPa 160 to 240
480 to 540

Thermal Properties

Latent Heat of Fusion, J/g 350
190
Maximum Temperature: Mechanical, °C 130
170
Melting Completion (Liquidus), °C 600
950
Melting Onset (Solidus), °C 500
910
Specific Heat Capacity, J/kg-K 990
390
Thermal Conductivity, W/m-K 84
42
Thermal Expansion, µm/m-K 27
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 12
28
Electrical Conductivity: Equal Weight (Specific), % IACS 65
30

Otherwise Unclassified Properties

Base Metal Price, % relative 12
30
Density, g/cm3 1.7
8.4
Embodied Carbon, kg CO2/kg material 23
3.6
Embodied Energy, MJ/kg 160
56
Embodied Water, L/kg 990
310

Common Calculations

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

Alloy Composition


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Aluminum (Al), % 7.0 to 8.1
0
Copper (Cu), % 0 to 0.1
59 to 66.5
Iron (Fe), % 0
0 to 0.25
Lead (Pb), % 0
0.8 to 1.4
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
11 to 13
Silicon (Si), % 0 to 0.3
0
Zinc (Zn), % 0.4 to 1.0
17.9 to 29.2
Residuals, % 0 to 0.3
0 to 0.5