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AS41B Magnesium vs. C91000 Bronze

AS41B magnesium belongs to the magnesium alloys classification, while C91000 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 AS41B magnesium and the bottom bar is C91000 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
110
Elongation at Break, % 6.0
7.0
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 18
39
Tensile Strength: Ultimate (UTS), MPa 210
230
Tensile Strength: Yield (Proof), MPa 140
150

Thermal Properties

Latent Heat of Fusion, J/g 370
180
Maximum Temperature: Mechanical, °C 110
160
Melting Completion (Liquidus), °C 620
960
Melting Onset (Solidus), °C 570
820
Specific Heat Capacity, J/kg-K 1000
360
Thermal Conductivity, W/m-K 68
64
Thermal Expansion, µm/m-K 26
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
9.0
Electrical Conductivity: Equal Weight (Specific), % IACS 92
9.4

Otherwise Unclassified Properties

Base Metal Price, % relative 12
37
Density, g/cm3 1.7
8.6
Embodied Carbon, kg CO2/kg material 23
4.1
Embodied Energy, MJ/kg 160
67
Embodied Water, L/kg 980
420

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
14
Resilience: Unit (Modulus of Resilience), kJ/m3 220
100
Stiffness to Weight: Axial, points 15
6.8
Stiffness to Weight: Bending, points 72
18
Strength to Weight: Axial, points 35
7.5
Strength to Weight: Bending, points 47
9.7
Thermal Diffusivity, mm2/s 41
20
Thermal Shock Resistance, points 13
8.8

Alloy Composition


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Aluminum (Al), % 3.5 to 5.0
0 to 0.0050
Antimony (Sb), % 0
0 to 0.2
Copper (Cu), % 0 to 0.020
84 to 86
Iron (Fe), % 0 to 0.0035
0 to 0.1
Lead (Pb), % 0
0 to 0.2
Magnesium (Mg), % 92.7 to 95.7
0
Manganese (Mn), % 0.35 to 0.7
0
Nickel (Ni), % 0 to 0.0020
0 to 0.8
Phosphorus (P), % 0
0 to 1.5
Silicon (Si), % 0.5 to 1.5
0 to 0.0050
Sulfur (S), % 0
0 to 0.050
Tin (Sn), % 0
14 to 16
Zinc (Zn), % 0 to 0.12
0 to 1.5
Residuals, % 0
0 to 0.6