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EN-MC21320 Magnesium vs. C93700 Bronze

EN-MC21320 magnesium belongs to the magnesium alloys classification, while C93700 bronze belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (6, 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 C93700 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
99
Elongation at Break, % 7.5
20
Fatigue Strength, MPa 95
90
Poisson's Ratio 0.29
0.35
Shear Modulus, GPa 18
37
Tensile Strength: Ultimate (UTS), MPa 230
240
Tensile Strength: Yield (Proof), MPa 140
130

Thermal Properties

Latent Heat of Fusion, J/g 370
170
Maximum Temperature: Mechanical, °C 110
140
Melting Completion (Liquidus), °C 600
930
Melting Onset (Solidus), °C 530
760
Specific Heat Capacity, J/kg-K 1000
350
Thermal Conductivity, W/m-K 66
47
Thermal Expansion, µm/m-K 26
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
10
Electrical Conductivity: Equal Weight (Specific), % IACS 91
10

Otherwise Unclassified Properties

Base Metal Price, % relative 12
33
Density, g/cm3 1.6
8.9
Embodied Carbon, kg CO2/kg material 23
3.5
Embodied Energy, MJ/kg 160
57
Embodied Water, L/kg 980
390

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 15
40
Resilience: Unit (Modulus of Resilience), kJ/m3 200
79
Stiffness to Weight: Axial, points 15
6.2
Stiffness to Weight: Bending, points 72
17
Strength to Weight: Axial, points 38
7.5
Strength to Weight: Bending, points 50
9.6
Thermal Diffusivity, mm2/s 40
15
Thermal Shock Resistance, points 13
9.4

Alloy Composition


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Aluminum (Al), % 3.5 to 5.0
0 to 0.0050
Antimony (Sb), % 0
0 to 0.5
Copper (Cu), % 0 to 0.010
78 to 82
Iron (Fe), % 0 to 0.0050
0 to 0.15
Lead (Pb), % 0
8.0 to 11
Magnesium (Mg), % 92.5 to 95.9
0
Manganese (Mn), % 0.1 to 0.7
0
Nickel (Ni), % 0 to 0.0020
0 to 1.0
Phosphorus (P), % 0
0 to 1.5
Silicon (Si), % 0.5 to 1.5
0 to 0.0050
Sulfur (S), % 0
0 to 0.080
Tin (Sn), % 0
9.0 to 11
Zinc (Zn), % 0 to 0.2
0 to 0.8
Residuals, % 0 to 0.010
0 to 1.0