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C82000 Copper vs. 4145 Aluminum

C82000 copper belongs to the copper alloys classification, while 4145 aluminum belongs to the aluminum alloys. There are 28 material properties with values for both materials. Properties with values for just one material (4, 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 C82000 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, % 8.0 to 20
2.2
Poisson's Ratio 0.34
0.33
Shear Modulus, GPa 45
28
Tensile Strength: Ultimate (UTS), MPa 350 to 690
120
Tensile Strength: Yield (Proof), MPa 140 to 520
68

Thermal Properties

Latent Heat of Fusion, J/g 220
540
Maximum Temperature: Mechanical, °C 220
160
Melting Completion (Liquidus), °C 1090
590
Melting Onset (Solidus), °C 970
520
Specific Heat Capacity, J/kg-K 390
880
Thermal Conductivity, W/m-K 260
100
Thermal Expansion, µm/m-K 17
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 45
26
Electrical Conductivity: Equal Weight (Specific), % IACS 46
84

Otherwise Unclassified Properties

Base Metal Price, % relative 60
10
Density, g/cm3 8.9
2.8
Embodied Carbon, kg CO2/kg material 5.0
7.6
Embodied Energy, MJ/kg 77
140
Embodied Water, L/kg 320
1040

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 51 to 55
2.3
Resilience: Unit (Modulus of Resilience), kJ/m3 80 to 1120
31
Stiffness to Weight: Axial, points 7.5
14
Stiffness to Weight: Bending, points 18
50
Strength to Weight: Axial, points 11 to 22
12
Strength to Weight: Bending, points 12 to 20
19
Thermal Diffusivity, mm2/s 76
42
Thermal Shock Resistance, points 12 to 24
5.5

Alloy Composition

Aluminum (Al), % 0 to 0.1
83 to 87.4
Beryllium (Be), % 0.45 to 0.8
0
Chromium (Cr), % 0 to 0.1
0 to 0.15
Cobalt (Co), % 2.2 to 2.7
0
Copper (Cu), % 95.2 to 97.4
3.3 to 4.7
Iron (Fe), % 0 to 0.1
0 to 0.8
Lead (Pb), % 0 to 0.020
0
Magnesium (Mg), % 0
0 to 0.15
Manganese (Mn), % 0
0 to 0.15
Nickel (Ni), % 0 to 0.2
0
Silicon (Si), % 0 to 0.15
9.3 to 10.7
Tin (Sn), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.1
0 to 0.2
Residuals, % 0
0 to 0.15