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EN-MC21220 Magnesium vs. C95800 Bronze

EN-MC21220 magnesium belongs to the magnesium alloys classification, while C95800 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 EN-MC21220 magnesium and the bottom bar is C95800 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
120
Elongation at Break, % 11
22
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 17
44
Tensile Strength: Ultimate (UTS), MPa 210
660
Tensile Strength: Yield (Proof), MPa 120
270

Thermal Properties

Latent Heat of Fusion, J/g 350
230
Maximum Temperature: Mechanical, °C 120
230
Melting Completion (Liquidus), °C 600
1060
Melting Onset (Solidus), °C 540
1040
Specific Heat Capacity, J/kg-K 1000
440
Thermal Conductivity, W/m-K 65
36
Thermal Expansion, µm/m-K 27
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 16
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 87
7.6

Otherwise Unclassified Properties

Base Metal Price, % relative 12
29
Density, g/cm3 1.7
8.3
Embodied Carbon, kg CO2/kg material 23
3.4
Embodied Energy, MJ/kg 160
55
Embodied Water, L/kg 990
370

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20
110
Resilience: Unit (Modulus of Resilience), kJ/m3 160
310
Stiffness to Weight: Axial, points 15
7.9
Stiffness to Weight: Bending, points 71
20
Strength to Weight: Axial, points 34
22
Strength to Weight: Bending, points 46
20
Thermal Diffusivity, mm2/s 39
9.9
Thermal Shock Resistance, points 12
23

Alloy Composition

Aluminum (Al), % 4.4 to 5.5
8.5 to 9.5
Copper (Cu), % 0 to 0.010
79 to 83.2
Iron (Fe), % 0 to 0.0050
3.5 to 4.5
Lead (Pb), % 0
0 to 0.030
Magnesium (Mg), % 93.5 to 95.5
0
Manganese (Mn), % 0.1 to 0.6
0.8 to 1.5
Nickel (Ni), % 0 to 0.0020
4.0 to 5.0
Silicon (Si), % 0 to 0.1
0 to 0.1
Zinc (Zn), % 0 to 0.3
0
Residuals, % 0
0 to 0.5