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EN-MC21320 Magnesium vs. C67300 Bronze

EN-MC21320 magnesium belongs to the magnesium alloys classification, while C67300 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 C67300 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
110
Elongation at Break, % 7.5
12
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 18
41
Shear Strength, MPa 130
300
Tensile Strength: Ultimate (UTS), MPa 230
500
Tensile Strength: Yield (Proof), MPa 140
340

Thermal Properties

Latent Heat of Fusion, J/g 370
190
Maximum Temperature: Mechanical, °C 110
130
Melting Completion (Liquidus), °C 600
870
Melting Onset (Solidus), °C 530
830
Specific Heat Capacity, J/kg-K 1000
390
Thermal Conductivity, W/m-K 66
95
Thermal Expansion, µm/m-K 26
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
22
Electrical Conductivity: Equal Weight (Specific), % IACS 91
25

Otherwise Unclassified Properties

Base Metal Price, % relative 12
23
Density, g/cm3 1.6
8.0
Embodied Carbon, kg CO2/kg material 23
2.7
Embodied Energy, MJ/kg 160
46
Embodied Water, L/kg 980
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 15
55
Resilience: Unit (Modulus of Resilience), kJ/m3 200
550
Stiffness to Weight: Axial, points 15
7.4
Stiffness to Weight: Bending, points 72
20
Strength to Weight: Axial, points 38
17
Strength to Weight: Bending, points 50
17
Thermal Diffusivity, mm2/s 40
30
Thermal Shock Resistance, points 13
16

Alloy Composition

Aluminum (Al), % 3.5 to 5.0
0 to 0.25
Copper (Cu), % 0 to 0.010
58 to 63
Iron (Fe), % 0 to 0.0050
0 to 0.5
Lead (Pb), % 0
0.4 to 3.0
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
27.2 to 39.1
Residuals, % 0 to 0.010
0 to 0.5