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ISO-WD32260 Magnesium vs. C31400 Bronze

ISO-WD32260 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 (1, 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-WD32260 magnesium and the bottom bar is C31400 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
110
Elongation at Break, % 4.5 to 6.0
6.8 to 29
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 18
42
Shear Strength, MPa 190 to 200
180 to 240
Tensile Strength: Ultimate (UTS), MPa 330 to 340
270 to 420
Tensile Strength: Yield (Proof), MPa 230 to 250
78 to 310

Thermal Properties

Latent Heat of Fusion, J/g 330
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 970
380
Thermal Conductivity, W/m-K 110
180
Thermal Expansion, µm/m-K 27
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 28
42
Electrical Conductivity: Equal Weight (Specific), % IACS 140
43

Otherwise Unclassified Properties

Base Metal Price, % relative 13
29
Density, g/cm3 1.9
8.8
Embodied Carbon, kg CO2/kg material 23
2.6
Embodied Energy, MJ/kg 160
42
Embodied Water, L/kg 940
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 14 to 19
26 to 59
Resilience: Unit (Modulus of Resilience), kJ/m3 560 to 700
28 to 420
Stiffness to Weight: Axial, points 13
7.1
Stiffness to Weight: Bending, points 63
18
Strength to Weight: Axial, points 48 to 51
8.7 to 13
Strength to Weight: Bending, points 56 to 58
11 to 14
Thermal Diffusivity, mm2/s 63
54
Thermal Shock Resistance, points 19 to 20
9.6 to 15

Alloy Composition

Copper (Cu), % 0
87.5 to 90.5
Iron (Fe), % 0
0 to 0.1
Lead (Pb), % 0
1.3 to 2.5
Magnesium (Mg), % 92.7 to 94.8
0
Nickel (Ni), % 0
0 to 0.7
Zinc (Zn), % 4.8 to 6.2
5.8 to 11.2
Zirconium (Zr), % 0.45 to 0.8
0
Residuals, % 0
0 to 0.4