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C14700 Copper vs. 4145 Aluminum

C14700 copper belongs to the copper alloys classification, while 4145 aluminum belongs to the aluminum alloys. There are 29 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 C14700 copper and the bottom bar is 4145 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
73
Elongation at Break, % 9.1 to 35
2.2
Poisson's Ratio 0.34
0.33
Shear Modulus, GPa 43
28
Shear Strength, MPa 160 to 190
69
Tensile Strength: Ultimate (UTS), MPa 240 to 320
120
Tensile Strength: Yield (Proof), MPa 85 to 250
68

Thermal Properties

Latent Heat of Fusion, J/g 210
540
Maximum Temperature: Mechanical, °C 200
160
Melting Completion (Liquidus), °C 1080
590
Melting Onset (Solidus), °C 1070
520
Specific Heat Capacity, J/kg-K 390
880
Thermal Conductivity, W/m-K 370
100
Thermal Expansion, µm/m-K 17
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 95
26
Electrical Conductivity: Equal Weight (Specific), % IACS 96
84

Otherwise Unclassified Properties

Base Metal Price, % relative 30
10
Density, g/cm3 8.9
2.8
Embodied Carbon, kg CO2/kg material 2.6
7.6
Embodied Energy, MJ/kg 41
140
Embodied Water, L/kg 310
1040

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 25 to 65
2.3
Resilience: Unit (Modulus of Resilience), kJ/m3 31 to 280
31
Stiffness to Weight: Axial, points 7.2
14
Stiffness to Weight: Bending, points 18
50
Strength to Weight: Axial, points 7.3 to 10
12
Strength to Weight: Bending, points 9.5 to 12
19
Thermal Diffusivity, mm2/s 110
42
Thermal Shock Resistance, points 8.4 to 12
5.5

Alloy Composition

Aluminum (Al), % 0
83 to 87.4
Chromium (Cr), % 0
0 to 0.15
Copper (Cu), % 99.395 to 99.798
3.3 to 4.7
Iron (Fe), % 0
0 to 0.8
Magnesium (Mg), % 0
0 to 0.15
Manganese (Mn), % 0
0 to 0.15
Phosphorus (P), % 0.0020 to 0.0050
0
Silicon (Si), % 0
9.3 to 10.7
Sulfur (S), % 0.2 to 0.5
0
Zinc (Zn), % 0
0 to 0.2
Residuals, % 0
0 to 0.15