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EN-MC21320 Magnesium vs. C64700 Bronze

EN-MC21320 magnesium belongs to the magnesium alloys classification, while C64700 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-MC21320 magnesium and the bottom bar is C64700 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
120
Elongation at Break, % 7.5
9.0
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 18
44
Shear Strength, MPa 130
390
Tensile Strength: Ultimate (UTS), MPa 230
660
Tensile Strength: Yield (Proof), MPa 140
560

Thermal Properties

Latent Heat of Fusion, J/g 370
220
Maximum Temperature: Mechanical, °C 110
200
Melting Completion (Liquidus), °C 600
1090
Melting Onset (Solidus), °C 530
1030
Specific Heat Capacity, J/kg-K 1000
390
Thermal Conductivity, W/m-K 66
210
Thermal Expansion, µm/m-K 26
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
38
Electrical Conductivity: Equal Weight (Specific), % IACS 91
38

Otherwise Unclassified Properties

Base Metal Price, % relative 12
31
Density, g/cm3 1.6
8.9
Embodied Carbon, kg CO2/kg material 23
2.7
Embodied Energy, MJ/kg 160
43
Embodied Water, L/kg 980
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 15
57
Resilience: Unit (Modulus of Resilience), kJ/m3 200
1370
Stiffness to Weight: Axial, points 15
7.3
Stiffness to Weight: Bending, points 72
18
Strength to Weight: Axial, points 38
21
Strength to Weight: Bending, points 50
19
Thermal Diffusivity, mm2/s 40
59
Thermal Shock Resistance, points 13
24

Alloy Composition


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Aluminum (Al), % 3.5 to 5.0
0
Copper (Cu), % 0 to 0.010
95.8 to 98
Iron (Fe), % 0 to 0.0050
0 to 0.1
Lead (Pb), % 0
0 to 0.1
Magnesium (Mg), % 92.5 to 95.9
0
Manganese (Mn), % 0.1 to 0.7
0
Nickel (Ni), % 0 to 0.0020
1.6 to 2.2
Silicon (Si), % 0.5 to 1.5
0.4 to 0.8
Zinc (Zn), % 0 to 0.2
0 to 0.5
Residuals, % 0 to 0.010
0 to 0.5