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AS41B Magnesium vs. C86100 Bronze

AS41B magnesium belongs to the magnesium alloys classification, while C86100 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 C86100 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
110
Elongation at Break, % 6.0
20
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 18
43
Tensile Strength: Ultimate (UTS), MPa 210
660
Tensile Strength: Yield (Proof), MPa 140
350

Thermal Properties

Latent Heat of Fusion, J/g 370
200
Maximum Temperature: Mechanical, °C 110
170
Melting Completion (Liquidus), °C 620
940
Melting Onset (Solidus), °C 570
900
Specific Heat Capacity, J/kg-K 1000
420
Thermal Conductivity, W/m-K 68
35
Thermal Expansion, µm/m-K 26
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
8.0
Electrical Conductivity: Equal Weight (Specific), % IACS 92
9.0

Otherwise Unclassified Properties

Base Metal Price, % relative 12
24
Density, g/cm3 1.7
8.0
Embodied Carbon, kg CO2/kg material 23
2.9
Embodied Energy, MJ/kg 160
49
Embodied Water, L/kg 980
350

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
110
Resilience: Unit (Modulus of Resilience), kJ/m3 220
530
Stiffness to Weight: Axial, points 15
7.8
Stiffness to Weight: Bending, points 72
20
Strength to Weight: Axial, points 35
23
Strength to Weight: Bending, points 47
21
Thermal Diffusivity, mm2/s 41
10
Thermal Shock Resistance, points 13
21

Alloy Composition

Aluminum (Al), % 3.5 to 5.0
4.5 to 5.5
Copper (Cu), % 0 to 0.020
66 to 68
Iron (Fe), % 0 to 0.0035
2.0 to 4.0
Lead (Pb), % 0
0 to 0.1
Magnesium (Mg), % 92.7 to 95.7
0
Manganese (Mn), % 0.35 to 0.7
2.5 to 5.0
Nickel (Ni), % 0 to 0.0020
0
Silicon (Si), % 0.5 to 1.5
0
Tin (Sn), % 0
0 to 0.1
Zinc (Zn), % 0 to 0.12
17.3 to 25