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ZK40A Magnesium vs. C63020 Bronze

ZK40A magnesium belongs to the magnesium alloys classification, while C63020 bronze belongs to the copper alloys. There are 27 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 ZK40A magnesium and the bottom bar is C63020 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
120
Elongation at Break, % 4.2
6.8
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
44
Shear Strength, MPa 160
600
Tensile Strength: Ultimate (UTS), MPa 280
1020
Tensile Strength: Yield (Proof), MPa 260
740

Thermal Properties

Latent Heat of Fusion, J/g 340
230
Maximum Temperature: Mechanical, °C 120
230
Melting Completion (Liquidus), °C 600
1070
Melting Onset (Solidus), °C 540
1020
Specific Heat Capacity, J/kg-K 970
450
Thermal Conductivity, W/m-K 110
40
Thermal Expansion, µm/m-K 26
18

Otherwise Unclassified Properties

Base Metal Price, % relative 13
29
Density, g/cm3 1.8
8.2
Embodied Carbon, kg CO2/kg material 24
3.6
Embodied Energy, MJ/kg 160
58
Embodied Water, L/kg 950
390

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12
63
Resilience: Unit (Modulus of Resilience), kJ/m3 740
2320
Stiffness to Weight: Axial, points 14
8.0
Stiffness to Weight: Bending, points 65
20
Strength to Weight: Axial, points 43
34
Strength to Weight: Bending, points 53
27
Thermal Diffusivity, mm2/s 62
11
Thermal Shock Resistance, points 17
35

Alloy Composition

Aluminum (Al), % 0
10 to 11
Chromium (Cr), % 0
0 to 0.050
Cobalt (Co), % 0
0 to 0.2
Copper (Cu), % 0
74.7 to 81.8
Iron (Fe), % 0
4.0 to 5.5
Lead (Pb), % 0
0 to 0.030
Magnesium (Mg), % 94.2 to 96.1
0
Manganese (Mn), % 0
0 to 1.5
Nickel (Ni), % 0
4.2 to 6.0
Tin (Sn), % 0
0 to 0.25
Zinc (Zn), % 3.5 to 4.5
0 to 0.3
Zirconium (Zr), % 0.45 to 1.0
0
Residuals, % 0
0 to 0.5