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ISO-WD43150 Magnesium vs. CC491K Bronze

ISO-WD43150 magnesium belongs to the magnesium alloys classification, while CC491K bronze belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (3, 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 ISO-WD43150 magnesium and the bottom bar is CC491K bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
110
Elongation at Break, % 2.8
13
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 18
40
Tensile Strength: Ultimate (UTS), MPa 250
260
Tensile Strength: Yield (Proof), MPa 150
120

Thermal Properties

Latent Heat of Fusion, J/g 350
190
Maximum Temperature: Mechanical, °C 95
160
Melting Completion (Liquidus), °C 610
980
Melting Onset (Solidus), °C 590
900
Specific Heat Capacity, J/kg-K 990
370
Thermal Conductivity, W/m-K 140
71
Thermal Expansion, µm/m-K 27
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 31
15
Electrical Conductivity: Equal Weight (Specific), % IACS 170
15

Otherwise Unclassified Properties

Base Metal Price, % relative 12
31
Density, g/cm3 1.7
8.9
Embodied Carbon, kg CO2/kg material 24
3.1
Embodied Energy, MJ/kg 160
51
Embodied Water, L/kg 970
350

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.1
27
Resilience: Unit (Modulus of Resilience), kJ/m3 250
67
Stiffness to Weight: Axial, points 15
6.7
Stiffness to Weight: Bending, points 71
18
Strength to Weight: Axial, points 41
8.1
Strength to Weight: Bending, points 52
10
Thermal Diffusivity, mm2/s 81
22
Thermal Shock Resistance, points 14
9.3

Alloy Composition


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Aluminum (Al), % 0
0 to 0.010
Antimony (Sb), % 0
0 to 0.25
Copper (Cu), % 0 to 0.050
81 to 87
Iron (Fe), % 0
0 to 0.3
Lead (Pb), % 0
4.0 to 6.0
Magnesium (Mg), % 97.5 to 98.8
0
Manganese (Mn), % 1.2 to 2.0
0
Nickel (Ni), % 0 to 0.010
0 to 2.0
Phosphorus (P), % 0
0 to 0.1
Silicon (Si), % 0 to 0.1
0 to 0.010
Sulfur (S), % 0
0 to 0.1
Tin (Sn), % 0
4.0 to 6.0
Zinc (Zn), % 0
4.0 to 6.0
Residuals, % 0 to 0.3
0