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AS41B Magnesium vs. C95800 Bronze

AS41B magnesium belongs to the magnesium alloys classification, while C95800 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 C95800 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
120
Elongation at Break, % 6.0
22
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 18
44
Tensile Strength: Ultimate (UTS), MPa 210
660
Tensile Strength: Yield (Proof), MPa 140
270

Thermal Properties

Latent Heat of Fusion, J/g 370
230
Maximum Temperature: Mechanical, °C 110
230
Melting Completion (Liquidus), °C 620
1060
Melting Onset (Solidus), °C 570
1040
Specific Heat Capacity, J/kg-K 1000
440
Thermal Conductivity, W/m-K 68
36
Thermal Expansion, µm/m-K 26
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 92
7.6

Otherwise Unclassified Properties

Base Metal Price, % relative 12
29
Density, g/cm3 1.7
8.3
Embodied Carbon, kg CO2/kg material 23
3.4
Embodied Energy, MJ/kg 160
55
Embodied Water, L/kg 980
370

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
110
Resilience: Unit (Modulus of Resilience), kJ/m3 220
310
Stiffness to Weight: Axial, points 15
7.9
Stiffness to Weight: Bending, points 72
20
Strength to Weight: Axial, points 35
22
Strength to Weight: Bending, points 47
20
Thermal Diffusivity, mm2/s 41
9.9
Thermal Shock Resistance, points 13
23

Alloy Composition


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Aluminum (Al), % 3.5 to 5.0
8.5 to 9.5
Copper (Cu), % 0 to 0.020
79 to 83.2
Iron (Fe), % 0 to 0.0035
3.5 to 4.5
Lead (Pb), % 0
0 to 0.030
Magnesium (Mg), % 92.7 to 95.7
0
Manganese (Mn), % 0.35 to 0.7
0.8 to 1.5
Nickel (Ni), % 0 to 0.0020
4.0 to 5.0
Silicon (Si), % 0.5 to 1.5
0 to 0.1
Zinc (Zn), % 0 to 0.12
0
Residuals, % 0
0 to 0.5