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ZK40A Magnesium vs. C96400 Copper-nickel

ZK40A magnesium belongs to the magnesium alloys classification, while C96400 copper-nickel 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 C96400 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
140
Elongation at Break, % 4.2
25
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
51
Tensile Strength: Ultimate (UTS), MPa 280
490
Tensile Strength: Yield (Proof), MPa 260
260

Thermal Properties

Latent Heat of Fusion, J/g 340
240
Maximum Temperature: Mechanical, °C 120
260
Melting Completion (Liquidus), °C 600
1240
Melting Onset (Solidus), °C 540
1170
Specific Heat Capacity, J/kg-K 970
400
Thermal Conductivity, W/m-K 110
28
Thermal Expansion, µm/m-K 26
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
5.0
Electrical Conductivity: Equal Weight (Specific), % IACS 130
5.1

Otherwise Unclassified Properties

Base Metal Price, % relative 13
45
Density, g/cm3 1.8
8.9
Embodied Carbon, kg CO2/kg material 24
5.9
Embodied Energy, MJ/kg 160
87
Embodied Water, L/kg 950
280

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12
100
Resilience: Unit (Modulus of Resilience), kJ/m3 740
250
Stiffness to Weight: Axial, points 14
8.6
Stiffness to Weight: Bending, points 65
19
Strength to Weight: Axial, points 43
15
Strength to Weight: Bending, points 53
16
Thermal Diffusivity, mm2/s 62
7.8
Thermal Shock Resistance, points 17
17

Alloy Composition

Carbon (C), % 0
0 to 0.15
Copper (Cu), % 0
62.3 to 71.3
Iron (Fe), % 0
0.25 to 1.5
Lead (Pb), % 0
0 to 0.010
Magnesium (Mg), % 94.2 to 96.1
0
Manganese (Mn), % 0
0 to 1.5
Nickel (Ni), % 0
28 to 32
Niobium (Nb), % 0
0.5 to 1.5
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0
0 to 0.5
Sulfur (S), % 0
0 to 0.020
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