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ZK40A Magnesium vs. C62500 Bronze

ZK40A magnesium belongs to the magnesium alloys classification, while C62500 bronze belongs to the copper alloys. There are 30 material properties with values for both materials. Properties with values for just one material (1, 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 C62500 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
110
Elongation at Break, % 4.2
1.0
Fatigue Strength, MPa 190
460
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 17
42
Shear Strength, MPa 160
410
Tensile Strength: Ultimate (UTS), MPa 280
690
Tensile Strength: Yield (Proof), MPa 260
410

Thermal Properties

Latent Heat of Fusion, J/g 340
230
Maximum Temperature: Mechanical, °C 120
230
Melting Completion (Liquidus), °C 600
1050
Melting Onset (Solidus), °C 540
1050
Specific Heat Capacity, J/kg-K 970
460
Thermal Conductivity, W/m-K 110
47
Thermal Expansion, µm/m-K 26
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
10
Electrical Conductivity: Equal Weight (Specific), % IACS 130
11

Otherwise Unclassified Properties

Base Metal Price, % relative 13
26
Density, g/cm3 1.8
8.1
Embodied Carbon, kg CO2/kg material 24
3.3
Embodied Energy, MJ/kg 160
55
Embodied Water, L/kg 950
410

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12
6.0
Resilience: Unit (Modulus of Resilience), kJ/m3 740
750
Stiffness to Weight: Axial, points 14
7.8
Stiffness to Weight: Bending, points 65
20
Strength to Weight: Axial, points 43
24
Strength to Weight: Bending, points 53
22
Thermal Diffusivity, mm2/s 62
13
Thermal Shock Resistance, points 17
24

Alloy Composition


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Aluminum (Al), % 0
12.5 to 13.5
Copper (Cu), % 0
78.5 to 84
Iron (Fe), % 0
3.5 to 5.5
Magnesium (Mg), % 94.2 to 96.1
0
Manganese (Mn), % 0
0 to 2.0
Zinc (Zn), % 3.5 to 4.5
0
Zirconium (Zr), % 0.45 to 1.0
0
Residuals, % 0 to 0.3
0 to 0.5