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EN-MC21220 Magnesium vs. C86300 Bronze

EN-MC21220 magnesium belongs to the magnesium alloys classification, while C86300 bronze belongs to the copper alloys. There are 29 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 EN-MC21220 magnesium and the bottom bar is C86300 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 58
250
Elastic (Young's, Tensile) Modulus, GPa 45
110
Elongation at Break, % 11
14
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 17
42
Tensile Strength: Ultimate (UTS), MPa 210
850
Tensile Strength: Yield (Proof), MPa 120
480

Thermal Properties

Latent Heat of Fusion, J/g 350
200
Maximum Temperature: Mechanical, °C 120
160
Melting Completion (Liquidus), °C 600
920
Melting Onset (Solidus), °C 540
890
Specific Heat Capacity, J/kg-K 1000
420
Thermal Conductivity, W/m-K 65
35
Thermal Expansion, µm/m-K 27
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 16
8.0
Electrical Conductivity: Equal Weight (Specific), % IACS 87
9.2

Otherwise Unclassified Properties

Base Metal Price, % relative 12
23
Density, g/cm3 1.7
7.8
Embodied Carbon, kg CO2/kg material 23
3.0
Embodied Energy, MJ/kg 160
51
Embodied Water, L/kg 990
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20
100
Resilience: Unit (Modulus of Resilience), kJ/m3 160
1030
Stiffness to Weight: Axial, points 15
7.8
Stiffness to Weight: Bending, points 71
20
Strength to Weight: Axial, points 34
30
Strength to Weight: Bending, points 46
25
Thermal Diffusivity, mm2/s 39
11
Thermal Shock Resistance, points 12
28

Alloy Composition


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Aluminum (Al), % 4.4 to 5.5
5.0 to 7.5
Copper (Cu), % 0 to 0.010
60 to 66
Iron (Fe), % 0 to 0.0050
2.0 to 4.0
Lead (Pb), % 0
0 to 0.2
Magnesium (Mg), % 93.5 to 95.5
0
Manganese (Mn), % 0.1 to 0.6
2.5 to 5.0
Nickel (Ni), % 0 to 0.0020
0 to 1.0
Silicon (Si), % 0 to 0.1
0
Tin (Sn), % 0
0 to 0.2
Zinc (Zn), % 0 to 0.3
22 to 28
Residuals, % 0 to 0.010
0 to 1.0