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AS41B Magnesium vs. CC492K Bronze

AS41B magnesium belongs to the magnesium alloys classification, while CC492K 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 CC492K bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
110
Elongation at Break, % 6.0
14
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 18
40
Tensile Strength: Ultimate (UTS), MPa 210
280
Tensile Strength: Yield (Proof), MPa 140
150

Thermal Properties

Latent Heat of Fusion, J/g 370
190
Maximum Temperature: Mechanical, °C 110
170
Melting Completion (Liquidus), °C 620
1000
Melting Onset (Solidus), °C 570
900
Specific Heat Capacity, J/kg-K 1000
370
Thermal Conductivity, W/m-K 68
73
Thermal Expansion, µm/m-K 26
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
13
Electrical Conductivity: Equal Weight (Specific), % IACS 92
13

Otherwise Unclassified Properties

Base Metal Price, % relative 12
33
Density, g/cm3 1.7
8.8
Embodied Carbon, kg CO2/kg material 23
3.4
Embodied Energy, MJ/kg 160
54
Embodied Water, L/kg 980
370

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
33
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
8.7
Strength to Weight: Bending, points 47
11
Thermal Diffusivity, mm2/s 41
23
Thermal Shock Resistance, points 13
10

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
83 to 89
Iron (Fe), % 0 to 0.0035
0 to 0.2
Lead (Pb), % 0
2.5 to 3.5
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
6.0 to 8.0
Zinc (Zn), % 0 to 0.12
1.5 to 3.0