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C81400 Copper vs. 6261 Aluminum

C81400 copper belongs to the copper alloys classification, while 6261 aluminum belongs to the aluminum alloys. There are 28 material properties with values for both materials. Properties with values for just one material (3, 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 C81400 copper and the bottom bar is 6261 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
69
Elongation at Break, % 11
9.0 to 16
Poisson's Ratio 0.34
0.33
Shear Modulus, GPa 41
26
Tensile Strength: Ultimate (UTS), MPa 370
150 to 300
Tensile Strength: Yield (Proof), MPa 250
100 to 260

Thermal Properties

Latent Heat of Fusion, J/g 210
400
Maximum Temperature: Mechanical, °C 200
160
Melting Completion (Liquidus), °C 1090
640
Melting Onset (Solidus), °C 1070
610
Specific Heat Capacity, J/kg-K 390
900
Thermal Conductivity, W/m-K 260
180
Thermal Expansion, µm/m-K 17
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 60
48
Electrical Conductivity: Equal Weight (Specific), % IACS 61
160

Otherwise Unclassified Properties

Base Metal Price, % relative 33
9.5
Density, g/cm3 8.9
2.7
Embodied Carbon, kg CO2/kg material 2.8
8.3
Embodied Energy, MJ/kg 45
150
Embodied Water, L/kg 310
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
21 to 27
Resilience: Unit (Modulus of Resilience), kJ/m3 260
77 to 500
Stiffness to Weight: Axial, points 7.3
14
Stiffness to Weight: Bending, points 18
50
Strength to Weight: Axial, points 11
15 to 31
Strength to Weight: Bending, points 13
23 to 37
Thermal Diffusivity, mm2/s 75
75
Thermal Shock Resistance, points 13
6.5 to 13

Alloy Composition

Aluminum (Al), % 0
96.6 to 98.6
Beryllium (Be), % 0.020 to 0.1
0
Chromium (Cr), % 0.6 to 1.0
0 to 0.1
Copper (Cu), % 98.4 to 99.38
0.15 to 0.4
Iron (Fe), % 0
0 to 0.4
Magnesium (Mg), % 0
0.7 to 1.0
Manganese (Mn), % 0
0.2 to 0.35
Silicon (Si), % 0
0.4 to 0.7
Titanium (Ti), % 0
0 to 0.1
Zinc (Zn), % 0
0 to 0.2
Residuals, % 0
0 to 0.15