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AS41B Magnesium vs. C87600 Bronze

AS41B magnesium belongs to the magnesium alloys classification, while C87600 bronze belongs to the copper alloys. There are 28 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 AS41B magnesium and the bottom bar is C87600 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
110
Elongation at Break, % 6.0
18
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 18
42
Tensile Strength: Ultimate (UTS), MPa 210
470
Tensile Strength: Yield (Proof), MPa 140
230

Thermal Properties

Latent Heat of Fusion, J/g 370
280
Maximum Temperature: Mechanical, °C 110
190
Melting Completion (Liquidus), °C 620
970
Melting Onset (Solidus), °C 570
860
Specific Heat Capacity, J/kg-K 1000
410
Thermal Conductivity, W/m-K 68
28
Thermal Expansion, µm/m-K 26
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
6.0
Electrical Conductivity: Equal Weight (Specific), % IACS 92
6.4

Otherwise Unclassified Properties

Base Metal Price, % relative 12
29
Density, g/cm3 1.7
8.5
Embodied Carbon, kg CO2/kg material 23
2.7
Embodied Energy, MJ/kg 160
43
Embodied Water, L/kg 980
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
71
Resilience: Unit (Modulus of Resilience), kJ/m3 220
240
Stiffness to Weight: Axial, points 15
7.4
Stiffness to Weight: Bending, points 72
19
Strength to Weight: Axial, points 35
16
Strength to Weight: Bending, points 47
16
Thermal Diffusivity, mm2/s 41
8.1
Thermal Shock Resistance, points 13
17

Alloy Composition


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Aluminum (Al), % 3.5 to 5.0
0
Copper (Cu), % 0 to 0.020
88 to 92.5
Iron (Fe), % 0 to 0.0035
0
Lead (Pb), % 0
0 to 0.5
Magnesium (Mg), % 92.7 to 95.7
0
Manganese (Mn), % 0.35 to 0.7
0
Nickel (Ni), % 0 to 0.0020
0
Silicon (Si), % 0.5 to 1.5
3.5 to 5.5
Zinc (Zn), % 0 to 0.12
4.0 to 7.0
Residuals, % 0
0 to 0.5