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EN-MC21320 Magnesium vs. C67400 Bronze

EN-MC21320 magnesium belongs to the magnesium alloys classification, while C67400 bronze belongs to the copper alloys. There are 29 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-MC21320 magnesium and the bottom bar is C67400 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
110
Elongation at Break, % 7.5
22 to 28
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 18
41
Shear Strength, MPa 130
310 to 350
Tensile Strength: Ultimate (UTS), MPa 230
480 to 610
Tensile Strength: Yield (Proof), MPa 140
250 to 370

Thermal Properties

Latent Heat of Fusion, J/g 370
190
Maximum Temperature: Mechanical, °C 110
130
Melting Completion (Liquidus), °C 600
890
Melting Onset (Solidus), °C 530
870
Specific Heat Capacity, J/kg-K 1000
400
Thermal Conductivity, W/m-K 66
100
Thermal Expansion, µm/m-K 26
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
23
Electrical Conductivity: Equal Weight (Specific), % IACS 91
26

Otherwise Unclassified Properties

Base Metal Price, % relative 12
23
Density, g/cm3 1.6
7.9
Embodied Carbon, kg CO2/kg material 23
2.8
Embodied Energy, MJ/kg 160
48
Embodied Water, L/kg 980
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 15
110 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 200
300 to 660
Stiffness to Weight: Axial, points 15
7.5
Stiffness to Weight: Bending, points 72
20
Strength to Weight: Axial, points 38
17 to 22
Strength to Weight: Bending, points 50
17 to 20
Thermal Diffusivity, mm2/s 40
32
Thermal Shock Resistance, points 13
16 to 20

Alloy Composition

Aluminum (Al), % 3.5 to 5.0
0.5 to 2.0
Copper (Cu), % 0 to 0.010
57 to 60
Iron (Fe), % 0 to 0.0050
0 to 0.35
Lead (Pb), % 0
0 to 0.5
Magnesium (Mg), % 92.5 to 95.9
0
Manganese (Mn), % 0.1 to 0.7
2.0 to 3.5
Nickel (Ni), % 0 to 0.0020
0 to 0.25
Silicon (Si), % 0.5 to 1.5
0.5 to 1.5
Tin (Sn), % 0
0 to 0.3
Zinc (Zn), % 0 to 0.2
31.1 to 40
Residuals, % 0 to 0.010
0 to 0.5