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AS41B Magnesium vs. CC491K Bronze

AS41B magnesium belongs to the magnesium alloys classification, while CC491K 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 CC491K bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
110
Elongation at Break, % 6.0
13
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 18
40
Tensile Strength: Ultimate (UTS), MPa 210
260
Tensile Strength: Yield (Proof), MPa 140
120

Thermal Properties

Latent Heat of Fusion, J/g 370
190
Maximum Temperature: Mechanical, °C 110
160
Melting Completion (Liquidus), °C 620
980
Melting Onset (Solidus), °C 570
900
Specific Heat Capacity, J/kg-K 1000
370
Thermal Conductivity, W/m-K 68
71
Thermal Expansion, µm/m-K 26
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
15
Electrical Conductivity: Equal Weight (Specific), % IACS 92
15

Otherwise Unclassified Properties

Base Metal Price, % relative 12
31
Density, g/cm3 1.7
8.9
Embodied Carbon, kg CO2/kg material 23
3.1
Embodied Energy, MJ/kg 160
51
Embodied Water, L/kg 980
350

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
27
Resilience: Unit (Modulus of Resilience), kJ/m3 220
67
Stiffness to Weight: Axial, points 15
6.7
Stiffness to Weight: Bending, points 72
18
Strength to Weight: Axial, points 35
8.1
Strength to Weight: Bending, points 47
10
Thermal Diffusivity, mm2/s 41
22
Thermal Shock Resistance, points 13
9.3

Alloy Composition

Aluminum (Al), % 3.5 to 5.0
0 to 0.010
Antimony (Sb), % 0
0 to 0.25
Copper (Cu), % 0 to 0.020
81 to 87
Iron (Fe), % 0 to 0.0035
0 to 0.3
Lead (Pb), % 0
4.0 to 6.0
Magnesium (Mg), % 92.7 to 95.7
0
Manganese (Mn), % 0.35 to 0.7
0
Nickel (Ni), % 0 to 0.0020
0 to 2.0
Phosphorus (P), % 0
0 to 0.1
Silicon (Si), % 0.5 to 1.5
0 to 0.010
Sulfur (S), % 0
0 to 0.1
Tin (Sn), % 0
4.0 to 6.0
Zinc (Zn), % 0 to 0.12
4.0 to 6.0