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ZK40A Magnesium vs. C94800 Bronze

ZK40A magnesium belongs to the magnesium alloys classification, while C94800 bronze belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (2, 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 C94800 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
110
Elongation at Break, % 4.2
22
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 17
43
Tensile Strength: Ultimate (UTS), MPa 280
310
Tensile Strength: Yield (Proof), MPa 260
160

Thermal Properties

Latent Heat of Fusion, J/g 340
200
Maximum Temperature: Mechanical, °C 120
190
Melting Completion (Liquidus), °C 600
1030
Melting Onset (Solidus), °C 540
900
Specific Heat Capacity, J/kg-K 970
380
Thermal Conductivity, W/m-K 110
39
Thermal Expansion, µm/m-K 26
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
12
Electrical Conductivity: Equal Weight (Specific), % IACS 130
12

Otherwise Unclassified Properties

Base Metal Price, % relative 13
34
Density, g/cm3 1.8
8.8
Embodied Carbon, kg CO2/kg material 24
3.5
Embodied Energy, MJ/kg 160
56
Embodied Water, L/kg 950
350

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12
58
Resilience: Unit (Modulus of Resilience), kJ/m3 740
110
Stiffness to Weight: Axial, points 14
7.2
Stiffness to Weight: Bending, points 65
18
Strength to Weight: Axial, points 43
9.8
Strength to Weight: Bending, points 53
12
Thermal Diffusivity, mm2/s 62
12
Thermal Shock Resistance, points 17
11

Alloy Composition


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Aluminum (Al), % 0
0 to 0.0050
Antimony (Sb), % 0
0 to 0.15
Copper (Cu), % 0
84 to 89
Iron (Fe), % 0
0 to 0.25
Lead (Pb), % 0
0.3 to 1.0
Magnesium (Mg), % 94.2 to 96.1
0
Manganese (Mn), % 0
0 to 0.2
Nickel (Ni), % 0
4.5 to 6.0
Phosphorus (P), % 0
0 to 0.050
Silicon (Si), % 0
0 to 0.0050
Sulfur (S), % 0
0 to 0.050
Tin (Sn), % 0
4.5 to 6.0
Zinc (Zn), % 3.5 to 4.5
1.0 to 2.5
Zirconium (Zr), % 0.45 to 1.0
0
Residuals, % 0 to 0.3
0 to 1.3