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C17500 Copper vs. ZK40A Magnesium

C17500 copper belongs to the copper alloys classification, while ZK40A magnesium belongs to the magnesium 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 C17500 copper and the bottom bar is ZK40A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
45
Elongation at Break, % 6.0 to 30
4.2
Fatigue Strength, MPa 170 to 310
190
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 45
17
Shear Strength, MPa 200 to 520
160
Tensile Strength: Ultimate (UTS), MPa 310 to 860
280
Tensile Strength: Yield (Proof), MPa 170 to 760
260

Thermal Properties

Latent Heat of Fusion, J/g 220
340
Maximum Temperature: Mechanical, °C 220
120
Melting Completion (Liquidus), °C 1060
600
Melting Onset (Solidus), °C 1020
540
Specific Heat Capacity, J/kg-K 390
970
Thermal Conductivity, W/m-K 200
110
Thermal Expansion, µm/m-K 18
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 24 to 53
27
Electrical Conductivity: Equal Weight (Specific), % IACS 24 to 54
130

Otherwise Unclassified Properties

Base Metal Price, % relative 60
13
Density, g/cm3 8.9
1.8
Embodied Carbon, kg CO2/kg material 4.7
24
Embodied Energy, MJ/kg 73
160
Embodied Water, L/kg 320
950

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 30 to 120
12
Resilience: Unit (Modulus of Resilience), kJ/m3 120 to 2390
740
Stiffness to Weight: Axial, points 7.5
14
Stiffness to Weight: Bending, points 18
65
Strength to Weight: Axial, points 9.7 to 27
43
Strength to Weight: Bending, points 11 to 23
53
Thermal Diffusivity, mm2/s 59
62
Thermal Shock Resistance, points 11 to 29
17

Alloy Composition

Aluminum (Al), % 0 to 0.2
0
Beryllium (Be), % 0.4 to 0.7
0
Cobalt (Co), % 2.4 to 2.7
0
Copper (Cu), % 95.6 to 97.2
0
Iron (Fe), % 0 to 0.1
0
Magnesium (Mg), % 0
94.2 to 96.1
Silicon (Si), % 0 to 0.2
0
Zinc (Zn), % 0
3.5 to 4.5
Zirconium (Zr), % 0
0.45 to 1.0
Residuals, % 0
0 to 0.3