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EN-MC21220 Magnesium vs. CC495K Bronze

EN-MC21220 magnesium belongs to the magnesium alloys classification, while CC495K 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 CC495K bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 58
76
Elastic (Young's, Tensile) Modulus, GPa 45
100
Elongation at Break, % 11
7.0
Poisson's Ratio 0.29
0.35
Shear Modulus, GPa 17
37
Tensile Strength: Ultimate (UTS), MPa 210
240
Tensile Strength: Yield (Proof), MPa 120
120

Thermal Properties

Latent Heat of Fusion, J/g 350
180
Maximum Temperature: Mechanical, °C 120
140
Melting Completion (Liquidus), °C 600
930
Melting Onset (Solidus), °C 540
820
Specific Heat Capacity, J/kg-K 1000
350
Thermal Conductivity, W/m-K 65
48
Thermal Expansion, µm/m-K 27
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 16
10
Electrical Conductivity: Equal Weight (Specific), % IACS 87
10

Otherwise Unclassified Properties

Base Metal Price, % relative 12
33
Density, g/cm3 1.7
9.0
Embodied Carbon, kg CO2/kg material 23
3.6
Embodied Energy, MJ/kg 160
58
Embodied Water, L/kg 990
400

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20
14
Resilience: Unit (Modulus of Resilience), kJ/m3 160
68
Stiffness to Weight: Axial, points 15
6.2
Stiffness to Weight: Bending, points 71
17
Strength to Weight: Axial, points 34
7.3
Strength to Weight: Bending, points 46
9.4
Thermal Diffusivity, mm2/s 39
15
Thermal Shock Resistance, points 12
8.8

Alloy Composition


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Aluminum (Al), % 4.4 to 5.5
0 to 0.010
Antimony (Sb), % 0
0 to 0.5
Copper (Cu), % 0 to 0.010
76 to 82
Iron (Fe), % 0 to 0.0050
0 to 0.25
Lead (Pb), % 0
8.0 to 11
Magnesium (Mg), % 93.5 to 95.5
0
Manganese (Mn), % 0.1 to 0.6
0 to 0.2
Nickel (Ni), % 0 to 0.0020
0 to 2.0
Phosphorus (P), % 0
0 to 0.1
Silicon (Si), % 0 to 0.1
0 to 0.010
Sulfur (S), % 0
0 to 0.1
Tin (Sn), % 0
9.0 to 11
Zinc (Zn), % 0 to 0.3
0 to 2.0
Residuals, % 0 to 0.010
0