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EN-MC21220 Magnesium vs. C90200 Bronze

EN-MC21220 magnesium belongs to the magnesium alloys classification, while C90200 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 C90200 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 58
70
Elastic (Young's, Tensile) Modulus, GPa 45
110
Elongation at Break, % 11
30
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 17
41
Tensile Strength: Ultimate (UTS), MPa 210
260
Tensile Strength: Yield (Proof), MPa 120
110

Thermal Properties

Latent Heat of Fusion, J/g 350
200
Maximum Temperature: Mechanical, °C 120
180
Melting Completion (Liquidus), °C 600
1050
Melting Onset (Solidus), °C 540
880
Specific Heat Capacity, J/kg-K 1000
370
Thermal Conductivity, W/m-K 65
62
Thermal Expansion, µm/m-K 27
18

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 12
34
Density, g/cm3 1.7
8.8
Embodied Carbon, kg CO2/kg material 23
3.3
Embodied Energy, MJ/kg 160
53
Embodied Water, L/kg 990
370

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20
63
Resilience: Unit (Modulus of Resilience), kJ/m3 160
55
Stiffness to Weight: Axial, points 15
7.0
Stiffness to Weight: Bending, points 71
18
Strength to Weight: Axial, points 34
8.3
Strength to Weight: Bending, points 46
10
Thermal Diffusivity, mm2/s 39
19
Thermal Shock Resistance, points 12
9.5

Alloy Composition

Aluminum (Al), % 4.4 to 5.5
0 to 0.0050
Antimony (Sb), % 0
0 to 0.2
Copper (Cu), % 0 to 0.010
91 to 94
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 0.5
Phosphorus (P), % 0
0 to 0.050
Silicon (Si), % 0 to 0.1
0 to 0.0050
Sulfur (S), % 0
0 to 0.050
Tin (Sn), % 0
6.0 to 8.0
Zinc (Zn), % 0 to 0.3
0 to 0.5
Residuals, % 0
0 to 0.6