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ZK40A Magnesium vs. C61800 Bronze

ZK40A magnesium belongs to the magnesium alloys classification, while C61800 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 C61800 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
110
Elongation at Break, % 4.2
26
Fatigue Strength, MPa 190
190
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 17
44
Shear Strength, MPa 160
310
Tensile Strength: Ultimate (UTS), MPa 280
740
Tensile Strength: Yield (Proof), MPa 260
310

Thermal Properties

Latent Heat of Fusion, J/g 340
230
Maximum Temperature: Mechanical, °C 120
220
Melting Completion (Liquidus), °C 600
1050
Melting Onset (Solidus), °C 540
1040
Specific Heat Capacity, J/kg-K 970
440
Thermal Conductivity, W/m-K 110
64
Thermal Expansion, µm/m-K 26
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
13
Electrical Conductivity: Equal Weight (Specific), % IACS 130
14

Otherwise Unclassified Properties

Base Metal Price, % relative 13
28
Density, g/cm3 1.8
8.3
Embodied Carbon, kg CO2/kg material 24
3.1
Embodied Energy, MJ/kg 160
52
Embodied Water, L/kg 950
390

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12
150
Resilience: Unit (Modulus of Resilience), kJ/m3 740
420
Stiffness to Weight: Axial, points 14
7.5
Stiffness to Weight: Bending, points 65
19
Strength to Weight: Axial, points 43
25
Strength to Weight: Bending, points 53
22
Thermal Diffusivity, mm2/s 62
18
Thermal Shock Resistance, points 17
26

Alloy Composition

Aluminum (Al), % 0
8.5 to 11
Copper (Cu), % 0
86.9 to 91
Iron (Fe), % 0
0.5 to 1.5
Lead (Pb), % 0
0 to 0.020
Magnesium (Mg), % 94.2 to 96.1
0
Silicon (Si), % 0
0 to 0.1
Zinc (Zn), % 3.5 to 4.5
0 to 0.020
Zirconium (Zr), % 0.45 to 1.0
0
Residuals, % 0
0 to 0.5