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AZ81A Magnesium vs. CC482K Bronze

AZ81A magnesium belongs to the magnesium alloys classification, while CC482K bronze 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 CC482K bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 55
99
Elastic (Young's, Tensile) Modulus, GPa 46
110
Elongation at Break, % 3.0 to 8.8
5.6
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 18
40
Tensile Strength: Ultimate (UTS), MPa 160 to 240
300
Tensile Strength: Yield (Proof), MPa 84
160

Thermal Properties

Latent Heat of Fusion, J/g 350
190
Maximum Temperature: Mechanical, °C 130
160
Melting Completion (Liquidus), °C 600
980
Melting Onset (Solidus), °C 500
860
Specific Heat Capacity, J/kg-K 990
360
Thermal Conductivity, W/m-K 84
64
Thermal Expansion, µm/m-K 27
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 12
10
Electrical Conductivity: Equal Weight (Specific), % IACS 65
10

Otherwise Unclassified Properties

Base Metal Price, % relative 12
36
Density, g/cm3 1.7
8.8
Embodied Carbon, kg CO2/kg material 23
3.8
Embodied Energy, MJ/kg 160
62
Embodied Water, L/kg 990
400

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.0 to 17
14
Resilience: Unit (Modulus of Resilience), kJ/m3 77 to 78
120
Stiffness to Weight: Axial, points 15
6.8
Stiffness to Weight: Bending, points 70
18
Strength to Weight: Axial, points 26 to 39
9.5
Strength to Weight: Bending, points 38 to 50
11
Thermal Diffusivity, mm2/s 50
20
Thermal Shock Resistance, points 9.1 to 14
11

Alloy Composition


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Aluminum (Al), % 7.0 to 8.1
0 to 0.010
Antimony (Sb), % 0
0 to 0.2
Copper (Cu), % 0 to 0.1
83.5 to 87
Iron (Fe), % 0
0 to 0.2
Lead (Pb), % 0
0.7 to 2.5
Magnesium (Mg), % 89.8 to 92.5
0
Manganese (Mn), % 0.13 to 0.35
0 to 0.2
Nickel (Ni), % 0 to 0.010
0 to 2.0
Phosphorus (P), % 0
0 to 0.4
Silicon (Si), % 0 to 0.3
0 to 0.010
Sulfur (S), % 0
0 to 0.080
Tin (Sn), % 0
10.5 to 12.5
Zinc (Zn), % 0.4 to 1.0
0 to 2.0
Residuals, % 0 to 0.3
0