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EN-MC21220 Magnesium vs. C38500 Bronze

EN-MC21220 magnesium belongs to the magnesium alloys classification, while C38500 bronze belongs to the copper alloys. There are 29 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 C38500 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
100
Elongation at Break, % 11
17
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 17
37
Shear Strength, MPa 120
230
Tensile Strength: Ultimate (UTS), MPa 210
370
Tensile Strength: Yield (Proof), MPa 120
130

Thermal Properties

Latent Heat of Fusion, J/g 350
160
Maximum Temperature: Mechanical, °C 120
110
Melting Completion (Liquidus), °C 600
890
Melting Onset (Solidus), °C 540
880
Specific Heat Capacity, J/kg-K 1000
380
Thermal Conductivity, W/m-K 65
120
Thermal Expansion, µm/m-K 27
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 16
28
Electrical Conductivity: Equal Weight (Specific), % IACS 87
31

Otherwise Unclassified Properties

Base Metal Price, % relative 12
22
Density, g/cm3 1.7
8.1
Embodied Carbon, kg CO2/kg material 23
2.6
Embodied Energy, MJ/kg 160
45
Embodied Water, L/kg 990
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20
48
Resilience: Unit (Modulus of Resilience), kJ/m3 160
78
Stiffness to Weight: Axial, points 15
7.0
Stiffness to Weight: Bending, points 71
19
Strength to Weight: Axial, points 34
13
Strength to Weight: Bending, points 46
14
Thermal Diffusivity, mm2/s 39
40
Thermal Shock Resistance, points 12
12

Alloy Composition


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Aluminum (Al), % 4.4 to 5.5
0
Copper (Cu), % 0 to 0.010
55 to 59
Iron (Fe), % 0 to 0.0050
0 to 0.35
Lead (Pb), % 0
2.5 to 3.5
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
Zinc (Zn), % 0 to 0.3
36.7 to 42.5
Residuals, % 0 to 0.010
0 to 0.5