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3105 Aluminum vs. C81400 Copper

3105 aluminum belongs to the aluminum alloys classification, while C81400 copper belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (5, 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 3105 aluminum and the bottom bar is C81400 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
120
Elongation at Break, % 1.1 to 20
11
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 26
41
Tensile Strength: Ultimate (UTS), MPa 120 to 240
370
Tensile Strength: Yield (Proof), MPa 46 to 220
250

Thermal Properties

Latent Heat of Fusion, J/g 400
210
Maximum Temperature: Mechanical, °C 180
200
Melting Completion (Liquidus), °C 660
1090
Melting Onset (Solidus), °C 640
1070
Specific Heat Capacity, J/kg-K 900
390
Thermal Conductivity, W/m-K 170
260
Thermal Expansion, µm/m-K 24
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 44
60
Electrical Conductivity: Equal Weight (Specific), % IACS 140
61

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
33
Density, g/cm3 2.8
8.9
Embodied Carbon, kg CO2/kg material 8.2
2.8
Embodied Energy, MJ/kg 150
45
Embodied Water, L/kg 1180
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.6 to 19
36
Resilience: Unit (Modulus of Resilience), kJ/m3 15 to 340
260
Stiffness to Weight: Axial, points 14
7.3
Stiffness to Weight: Bending, points 50
18
Strength to Weight: Axial, points 12 to 24
11
Strength to Weight: Bending, points 20 to 31
13
Thermal Diffusivity, mm2/s 68
75
Thermal Shock Resistance, points 5.2 to 11
13

Alloy Composition

Aluminum (Al), % 96 to 99.5
0
Beryllium (Be), % 0
0.020 to 0.1
Chromium (Cr), % 0 to 0.2
0.6 to 1.0
Copper (Cu), % 0 to 0.3
98.4 to 99.38
Iron (Fe), % 0 to 0.7
0
Magnesium (Mg), % 0.2 to 0.8
0
Manganese (Mn), % 0.3 to 0.8
0
Silicon (Si), % 0 to 0.6
0
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.4
0
Residuals, % 0
0 to 0.5