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ZK40A Magnesium vs. C94300 Bronze

ZK40A magnesium belongs to the magnesium alloys classification, while C94300 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 C94300 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
87
Elongation at Break, % 4.2
9.7
Poisson's Ratio 0.29
0.36
Shear Modulus, GPa 17
32
Tensile Strength: Ultimate (UTS), MPa 280
180
Tensile Strength: Yield (Proof), MPa 260
120

Thermal Properties

Latent Heat of Fusion, J/g 340
150
Maximum Temperature: Mechanical, °C 120
110
Melting Completion (Liquidus), °C 600
820
Melting Onset (Solidus), °C 540
760
Specific Heat Capacity, J/kg-K 970
320
Thermal Conductivity, W/m-K 110
63
Thermal Expansion, µm/m-K 26
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
9.0
Electrical Conductivity: Equal Weight (Specific), % IACS 130
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 13
28
Density, g/cm3 1.8
9.3
Embodied Carbon, kg CO2/kg material 24
2.9
Embodied Energy, MJ/kg 160
47
Embodied Water, L/kg 950
370

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12
15
Resilience: Unit (Modulus of Resilience), kJ/m3 740
77
Stiffness to Weight: Axial, points 14
5.2
Stiffness to Weight: Bending, points 65
16
Strength to Weight: Axial, points 43
5.2
Strength to Weight: Bending, points 53
7.4
Thermal Diffusivity, mm2/s 62
21
Thermal Shock Resistance, points 17
7.1

Alloy Composition


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Aluminum (Al), % 0
0 to 0.0050
Antimony (Sb), % 0
0 to 0.8
Copper (Cu), % 0
67 to 72
Iron (Fe), % 0
0 to 0.15
Lead (Pb), % 0
23 to 27
Magnesium (Mg), % 94.2 to 96.1
0
Nickel (Ni), % 0
0 to 1.0
Phosphorus (P), % 0
0 to 1.5
Silicon (Si), % 0
0 to 0.0050
Sulfur (S), % 0
0 to 0.080
Tin (Sn), % 0
4.5 to 6.0
Zinc (Zn), % 3.5 to 4.5
0 to 0.8
Zirconium (Zr), % 0.45 to 1.0
0
Residuals, % 0 to 0.3
0 to 1.0