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EN-MC21220 Magnesium vs. C90300 Bronze

EN-MC21220 magnesium belongs to the magnesium alloys classification, while C90300 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 EN-MC21220 magnesium and the bottom bar is C90300 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
110
Elongation at Break, % 11
22
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 17
41
Tensile Strength: Ultimate (UTS), MPa 210
330
Tensile Strength: Yield (Proof), MPa 120
150

Thermal Properties

Latent Heat of Fusion, J/g 350
190
Maximum Temperature: Mechanical, °C 120
170
Melting Completion (Liquidus), °C 600
1000
Melting Onset (Solidus), °C 540
850
Specific Heat Capacity, J/kg-K 1000
370
Thermal Conductivity, W/m-K 65
75
Thermal Expansion, µm/m-K 27
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 16
12
Electrical Conductivity: Equal Weight (Specific), % IACS 87
12

Otherwise Unclassified Properties

Base Metal Price, % relative 12
33
Density, g/cm3 1.7
8.7
Embodied Carbon, kg CO2/kg material 23
3.4
Embodied Energy, MJ/kg 160
56
Embodied Water, L/kg 990
370

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20
59
Resilience: Unit (Modulus of Resilience), kJ/m3 160
110
Stiffness to Weight: Axial, points 15
7.0
Stiffness to Weight: Bending, points 71
18
Strength to Weight: Axial, points 34
11
Strength to Weight: Bending, points 46
12
Thermal Diffusivity, mm2/s 39
23
Thermal Shock Resistance, points 12
12

Alloy Composition


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Aluminum (Al), % 4.4 to 5.5
0 to 0.0050
Antimony (Sb), % 0
0 to 0.2
Copper (Cu), % 0 to 0.010
86 to 89
Iron (Fe), % 0 to 0.0050
0 to 0.2
Lead (Pb), % 0
0 to 0.3
Magnesium (Mg), % 93.5 to 95.5
0
Manganese (Mn), % 0.1 to 0.6
0
Nickel (Ni), % 0 to 0.0020
0 to 1.0
Phosphorus (P), % 0
0 to 1.5
Silicon (Si), % 0 to 0.1
0 to 0.0050
Sulfur (S), % 0
0 to 0.050
Tin (Sn), % 0
7.5 to 9.0
Zinc (Zn), % 0 to 0.3
3.0 to 5.0
Residuals, % 0 to 0.010
0 to 0.6