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AZ81A Magnesium vs. C75400 Nickel Silver

AZ81A magnesium belongs to the magnesium alloys classification, while C75400 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 C75400 nickel silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
120
Elongation at Break, % 3.0 to 8.8
2.0 to 43
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 18
46
Shear Strength, MPa 91 to 130
250 to 370
Tensile Strength: Ultimate (UTS), MPa 160 to 240
370 to 630
Tensile Strength: Yield (Proof), MPa 84
130 to 590

Thermal Properties

Latent Heat of Fusion, J/g 350
200
Maximum Temperature: Mechanical, °C 130
190
Melting Completion (Liquidus), °C 600
1080
Melting Onset (Solidus), °C 500
1040
Specific Heat Capacity, J/kg-K 990
390
Thermal Conductivity, W/m-K 84
36
Thermal Expansion, µm/m-K 27
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 12
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 65
7.4

Otherwise Unclassified Properties

Base Metal Price, % relative 12
32
Density, g/cm3 1.7
8.5
Embodied Carbon, kg CO2/kg material 23
3.8
Embodied Energy, MJ/kg 160
59
Embodied Water, L/kg 990
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.0 to 17
12 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 77 to 78
75 to 1450
Stiffness to Weight: Axial, points 15
7.9
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
13 to 19
Thermal Diffusivity, mm2/s 50
11
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
63.5 to 66.5
Iron (Fe), % 0
0 to 0.25
Lead (Pb), % 0
0 to 0.1
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
14 to 16
Silicon (Si), % 0 to 0.3
0
Zinc (Zn), % 0.4 to 1.0
16.2 to 22.5
Residuals, % 0 to 0.3
0 to 0.5