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AZ81A Magnesium vs. C75700 Nickel Silver

AZ81A magnesium belongs to the magnesium alloys classification, while C75700 nickel silver belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (4, 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 C75700 nickel silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
120
Elongation at Break, % 3.0 to 8.8
3.2 to 22
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 18
45
Shear Strength, MPa 91 to 130
350 to 370
Tensile Strength: Ultimate (UTS), MPa 160 to 240
590 to 610
Tensile Strength: Yield (Proof), MPa 84
470 to 580

Thermal Properties

Latent Heat of Fusion, J/g 350
200
Maximum Temperature: Mechanical, °C 130
180
Melting Completion (Liquidus), °C 600
1040
Melting Onset (Solidus), °C 500
990
Specific Heat Capacity, J/kg-K 990
390
Thermal Conductivity, W/m-K 84
40
Thermal Expansion, µm/m-K 27
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 12
8.0
Electrical Conductivity: Equal Weight (Specific), % IACS 65
8.6

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

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.0 to 17
19 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 77 to 78
930 to 1410
Stiffness to Weight: Axial, points 15
7.8
Stiffness to Weight: Bending, points 70
19
Strength to Weight: Axial, points 26 to 39
19 to 20
Strength to Weight: Bending, points 38 to 50
19
Thermal Diffusivity, mm2/s 50
12
Thermal Shock Resistance, points 9.1 to 14
22 to 23

Alloy Composition

Aluminum (Al), % 7.0 to 8.1
0
Copper (Cu), % 0 to 0.1
63.5 to 66.5
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
11 to 13
Silicon (Si), % 0 to 0.3
0
Zinc (Zn), % 0.4 to 1.0
19.2 to 25.5
Residuals, % 0 to 0.3
0 to 0.5