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WE43B Magnesium vs. C87700 Bronze

WE43B magnesium belongs to the magnesium alloys classification, while C87700 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 WE43B magnesium and the bottom bar is C87700 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
110
Elongation at Break, % 2.2
3.6
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
42
Tensile Strength: Ultimate (UTS), MPa 250
300
Tensile Strength: Yield (Proof), MPa 200
120

Thermal Properties

Latent Heat of Fusion, J/g 330
250
Maximum Temperature: Mechanical, °C 180
180
Melting Completion (Liquidus), °C 640
980
Melting Onset (Solidus), °C 550
900
Specific Heat Capacity, J/kg-K 960
400
Thermal Conductivity, W/m-K 51
120
Thermal Expansion, µm/m-K 27
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
45
Electrical Conductivity: Equal Weight (Specific), % IACS 53
48

Otherwise Unclassified Properties

Base Metal Price, % relative 34
29
Density, g/cm3 1.9
8.5
Embodied Carbon, kg CO2/kg material 28
2.7
Embodied Energy, MJ/kg 250
45
Embodied Water, L/kg 910
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.2
8.6
Resilience: Unit (Modulus of Resilience), kJ/m3 430
64
Stiffness to Weight: Axial, points 13
7.4
Stiffness to Weight: Bending, points 61
19
Strength to Weight: Axial, points 36
9.8
Strength to Weight: Bending, points 46
12
Thermal Diffusivity, mm2/s 28
34
Thermal Shock Resistance, points 15
11

Alloy Composition


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Antimony (Sb), % 0
0 to 0.1
Copper (Cu), % 0 to 0.020
87.5 to 90.5
Iron (Fe), % 0 to 0.010
0 to 0.5
Lead (Pb), % 0
0 to 0.090
Lithium (Li), % 0 to 0.2
0
Magnesium (Mg), % 89.8 to 93.5
0
Manganese (Mn), % 0 to 0.030
0 to 0.8
Nickel (Ni), % 0 to 0.0050
0 to 0.25
Phosphorus (P), % 0
0 to 0.15
Silicon (Si), % 0
2.5 to 3.5
Tin (Sn), % 0
0 to 2.0
Unspecified Rare Earths, % 2.4 to 4.4
0
Yttrium (Y), % 3.7 to 4.3
0
Zinc (Zn), % 0 to 0.2
7.0 to 9.0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0
0 to 0.8