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AZ81A Magnesium vs. C78200 Nickel Silver

AZ81A magnesium belongs to the magnesium alloys classification, while C78200 nickel silver belongs to the copper alloys. There are 29 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 C78200 nickel silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
110
Elongation at Break, % 3.0 to 8.8
3.0 to 40
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 18
43
Shear Strength, MPa 91 to 130
280 to 400
Tensile Strength: Ultimate (UTS), MPa 160 to 240
370 to 630
Tensile Strength: Yield (Proof), MPa 84
170 to 570

Thermal Properties

Latent Heat of Fusion, J/g 350
190
Maximum Temperature: Mechanical, °C 130
160
Melting Completion (Liquidus), °C 600
1000
Melting Onset (Solidus), °C 500
970
Specific Heat Capacity, J/kg-K 990
390
Thermal Conductivity, W/m-K 84
48
Thermal Expansion, µm/m-K 27
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 12
11
Electrical Conductivity: Equal Weight (Specific), % IACS 65
12

Otherwise Unclassified Properties

Base Metal Price, % relative 12
28
Density, g/cm3 1.7
8.4
Embodied Carbon, kg CO2/kg material 23
3.3
Embodied Energy, MJ/kg 160
52
Embodied Water, L/kg 990
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.0 to 17
18 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 77 to 78
130 to 1440
Stiffness to Weight: Axial, points 15
7.4
Stiffness to Weight: Bending, points 70
19
Strength to Weight: Axial, points 26 to 39
12 to 21
Strength to Weight: Bending, points 38 to 50
14 to 19
Thermal Diffusivity, mm2/s 50
15
Thermal Shock Resistance, points 9.1 to 14
12 to 21

Alloy Composition

Aluminum (Al), % 7.0 to 8.1
0
Copper (Cu), % 0 to 0.1
63 to 67
Iron (Fe), % 0
0 to 0.35
Lead (Pb), % 0
1.5 to 2.5
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
7.0 to 9.0
Silicon (Si), % 0 to 0.3
0
Zinc (Zn), % 0.4 to 1.0
20.2 to 28.5
Residuals, % 0 to 0.3
0 to 0.5