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EN-MC65120 Magnesium vs. CC491K Bronze

EN-MC65120 magnesium belongs to the magnesium alloys classification, while CC491K bronze belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (2, 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 EN-MC65120 magnesium and the bottom bar is CC491K bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 55
73
Elastic (Young's, Tensile) Modulus, GPa 45
110
Elongation at Break, % 3.1
13
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 17
40
Tensile Strength: Ultimate (UTS), MPa 160
260
Tensile Strength: Yield (Proof), MPa 110
120

Thermal Properties

Latent Heat of Fusion, J/g 330
190
Maximum Temperature: Mechanical, °C 180
160
Melting Completion (Liquidus), °C 590
980
Melting Onset (Solidus), °C 520
900
Specific Heat Capacity, J/kg-K 970
370
Thermal Conductivity, W/m-K 100
71
Thermal Expansion, µm/m-K 26
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
15
Electrical Conductivity: Equal Weight (Specific), % IACS 120
15

Otherwise Unclassified Properties

Base Metal Price, % relative 25
31
Density, g/cm3 1.9
8.9
Embodied Carbon, kg CO2/kg material 25
3.1
Embodied Energy, MJ/kg 190
51
Embodied Water, L/kg 930
350

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.4
27
Resilience: Unit (Modulus of Resilience), kJ/m3 140
67
Stiffness to Weight: Axial, points 13
6.7
Stiffness to Weight: Bending, points 62
18
Strength to Weight: Axial, points 23
8.1
Strength to Weight: Bending, points 34
10
Thermal Diffusivity, mm2/s 56
22
Thermal Shock Resistance, points 9.8
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 0.030
81 to 87
Iron (Fe), % 0 to 0.010
0 to 0.3
Lead (Pb), % 0
4.0 to 6.0
Magnesium (Mg), % 91.8 to 95.1
0
Manganese (Mn), % 0 to 0.15
0
Nickel (Ni), % 0 to 0.0050
0 to 2.0
Phosphorus (P), % 0
0 to 0.1
Silicon (Si), % 0 to 0.010
0 to 0.010
Sulfur (S), % 0
0 to 0.1
Tin (Sn), % 0
4.0 to 6.0
Unspecified Rare Earths, % 2.5 to 4.0
0
Zinc (Zn), % 2.0 to 3.0
4.0 to 6.0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0