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EN-MC21220 Magnesium vs. C61800 Bronze

EN-MC21220 magnesium belongs to the magnesium alloys classification, while C61800 bronze belongs to the copper alloys. There are 30 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 EN-MC21220 magnesium and the bottom bar is C61800 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
110
Elongation at Break, % 11
26
Fatigue Strength, MPa 89
190
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 17
44
Shear Strength, MPa 120
310
Tensile Strength: Ultimate (UTS), MPa 210
740
Tensile Strength: Yield (Proof), MPa 120
310

Thermal Properties

Latent Heat of Fusion, J/g 350
230
Maximum Temperature: Mechanical, °C 120
220
Melting Completion (Liquidus), °C 600
1050
Melting Onset (Solidus), °C 540
1040
Specific Heat Capacity, J/kg-K 1000
440
Thermal Conductivity, W/m-K 65
64
Thermal Expansion, µm/m-K 27
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 16
13
Electrical Conductivity: Equal Weight (Specific), % IACS 87
14

Otherwise Unclassified Properties

Base Metal Price, % relative 12
28
Density, g/cm3 1.7
8.3
Embodied Carbon, kg CO2/kg material 23
3.1
Embodied Energy, MJ/kg 160
52
Embodied Water, L/kg 990
390

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20
150
Resilience: Unit (Modulus of Resilience), kJ/m3 160
420
Stiffness to Weight: Axial, points 15
7.5
Stiffness to Weight: Bending, points 71
19
Strength to Weight: Axial, points 34
25
Strength to Weight: Bending, points 46
22
Thermal Diffusivity, mm2/s 39
18
Thermal Shock Resistance, points 12
26

Alloy Composition


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Aluminum (Al), % 4.4 to 5.5
8.5 to 11
Copper (Cu), % 0 to 0.010
86.9 to 91
Iron (Fe), % 0 to 0.0050
0.5 to 1.5
Lead (Pb), % 0
0 to 0.020
Magnesium (Mg), % 93.5 to 95.5
0
Manganese (Mn), % 0.1 to 0.6
0
Nickel (Ni), % 0 to 0.0020
0
Silicon (Si), % 0 to 0.1
0 to 0.1
Zinc (Zn), % 0 to 0.3
0 to 0.020
Residuals, % 0 to 0.010
0 to 0.5