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AZ81A Magnesium vs. C96300 Copper-nickel

AZ81A magnesium belongs to the magnesium alloys classification, while C96300 copper-nickel 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 C96300 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 55
150
Elastic (Young's, Tensile) Modulus, GPa 46
130
Elongation at Break, % 3.0 to 8.8
11
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 18
49
Tensile Strength: Ultimate (UTS), MPa 160 to 240
580
Tensile Strength: Yield (Proof), MPa 84
430

Thermal Properties

Latent Heat of Fusion, J/g 350
230
Maximum Temperature: Mechanical, °C 130
240
Melting Completion (Liquidus), °C 600
1200
Melting Onset (Solidus), °C 500
1150
Specific Heat Capacity, J/kg-K 990
400
Thermal Conductivity, W/m-K 84
37
Thermal Expansion, µm/m-K 27
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 12
6.0
Electrical Conductivity: Equal Weight (Specific), % IACS 65
6.1

Otherwise Unclassified Properties

Base Metal Price, % relative 12
42
Density, g/cm3 1.7
8.9
Embodied Carbon, kg CO2/kg material 23
5.1
Embodied Energy, MJ/kg 160
76
Embodied Water, L/kg 990
290

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.0 to 17
59
Resilience: Unit (Modulus of Resilience), kJ/m3 77 to 78
720
Stiffness to Weight: Axial, points 15
8.2
Stiffness to Weight: Bending, points 70
19
Strength to Weight: Axial, points 26 to 39
18
Strength to Weight: Bending, points 38 to 50
17
Thermal Diffusivity, mm2/s 50
10
Thermal Shock Resistance, points 9.1 to 14
20

Alloy Composition


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Aluminum (Al), % 7.0 to 8.1
0
Carbon (C), % 0
0 to 0.15
Copper (Cu), % 0 to 0.1
72.3 to 80.8
Iron (Fe), % 0
0.5 to 1.5
Lead (Pb), % 0
0 to 0.010
Magnesium (Mg), % 89.8 to 92.5
0
Manganese (Mn), % 0.13 to 0.35
0.25 to 1.5
Nickel (Ni), % 0 to 0.010
18 to 22
Niobium (Nb), % 0
0.5 to 1.5
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0 to 0.3
0 to 0.5
Sulfur (S), % 0
0 to 0.020
Zinc (Zn), % 0.4 to 1.0
0
Residuals, % 0 to 0.3
0 to 0.5