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AZ81A Magnesium vs. C83600 Ounce Metal

AZ81A magnesium belongs to the magnesium alloys classification, while C83600 ounce metal belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (5, 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 C83600 ounce metal.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
110
Elongation at Break, % 3.0 to 8.8
21
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 18
39
Tensile Strength: Ultimate (UTS), MPa 160 to 240
250
Tensile Strength: Yield (Proof), MPa 84
120

Thermal Properties

Latent Heat of Fusion, J/g 350
190
Maximum Temperature: Mechanical, °C 130
160
Melting Completion (Liquidus), °C 600
1010
Melting Onset (Solidus), °C 500
850
Specific Heat Capacity, J/kg-K 990
370
Thermal Conductivity, W/m-K 84
72
Thermal Expansion, µm/m-K 27
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 12
15
Electrical Conductivity: Equal Weight (Specific), % IACS 65
15

Otherwise Unclassified Properties

Base Metal Price, % relative 12
31
Density, g/cm3 1.7
8.8
Embodied Carbon, kg CO2/kg material 23
3.1
Embodied Energy, MJ/kg 160
50
Embodied Water, L/kg 990
350

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.0 to 17
43
Resilience: Unit (Modulus of Resilience), kJ/m3 77 to 78
70
Stiffness to Weight: Axial, points 15
6.7
Stiffness to Weight: Bending, points 70
18
Strength to Weight: Axial, points 26 to 39
7.9
Strength to Weight: Bending, points 38 to 50
10
Thermal Diffusivity, mm2/s 50
22
Thermal Shock Resistance, points 9.1 to 14
9.3

Alloy Composition


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Aluminum (Al), % 7.0 to 8.1
0 to 0.0050
Antimony (Sb), % 0
0 to 0.25
Copper (Cu), % 0 to 0.1
84 to 86
Iron (Fe), % 0
0 to 0.3
Lead (Pb), % 0
4.0 to 6.0
Magnesium (Mg), % 89.8 to 92.5
0
Manganese (Mn), % 0.13 to 0.35
0
Nickel (Ni), % 0 to 0.010
0 to 1.0
Phosphorus (P), % 0
0 to 1.5
Silicon (Si), % 0 to 0.3
0 to 0.0050
Sulfur (S), % 0
0 to 0.080
Tin (Sn), % 0
4.0 to 6.0
Zinc (Zn), % 0.4 to 1.0
4.0 to 6.0
Residuals, % 0 to 0.3
0 to 0.7