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EN-MC21230 Magnesium vs. C31400 Bronze

EN-MC21230 magnesium belongs to the magnesium alloys classification, while C31400 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-MC21230 magnesium and the bottom bar is C31400 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
110
Elongation at Break, % 10
6.8 to 29
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 18
42
Shear Strength, MPa 130
180 to 240
Tensile Strength: Ultimate (UTS), MPa 220
270 to 420
Tensile Strength: Yield (Proof), MPa 140
78 to 310

Thermal Properties

Latent Heat of Fusion, J/g 350
200
Maximum Temperature: Mechanical, °C 120
180
Melting Completion (Liquidus), °C 600
1040
Melting Onset (Solidus), °C 520
1010
Specific Heat Capacity, J/kg-K 1000
380
Thermal Conductivity, W/m-K 72
180
Thermal Expansion, µm/m-K 27
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 12
42
Electrical Conductivity: Equal Weight (Specific), % IACS 63
43

Otherwise Unclassified Properties

Base Metal Price, % relative 12
29
Density, g/cm3 1.7
8.8
Embodied Carbon, kg CO2/kg material 23
2.6
Embodied Energy, MJ/kg 160
42
Embodied Water, L/kg 990
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19
26 to 59
Resilience: Unit (Modulus of Resilience), kJ/m3 200
28 to 420
Stiffness to Weight: Axial, points 15
7.1
Stiffness to Weight: Bending, points 71
18
Strength to Weight: Axial, points 36
8.7 to 13
Strength to Weight: Bending, points 48
11 to 14
Thermal Diffusivity, mm2/s 43
54
Thermal Shock Resistance, points 13
9.6 to 15

Alloy Composition

Aluminum (Al), % 5.5 to 8.5
0
Copper (Cu), % 0 to 0.010
87.5 to 90.5
Iron (Fe), % 0 to 0.0050
0 to 0.1
Lead (Pb), % 0
1.3 to 2.5
Magnesium (Mg), % 90.5 to 94.4
0
Manganese (Mn), % 0.1 to 0.6
0
Nickel (Ni), % 0 to 0.0020
0 to 0.7
Silicon (Si), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.3
5.8 to 11.2
Residuals, % 0 to 0.010
0 to 0.4