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3105 Aluminum vs. C82500 Copper

3105 aluminum belongs to the aluminum alloys classification, while C82500 copper belongs to the copper alloys. There are 27 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 C82500 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
120
Elongation at Break, % 1.1 to 20
1.0 to 20
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
45
Tensile Strength: Ultimate (UTS), MPa 120 to 240
550 to 1100
Tensile Strength: Yield (Proof), MPa 46 to 220
310 to 980

Thermal Properties

Latent Heat of Fusion, J/g 400
240
Maximum Temperature: Mechanical, °C 180
280
Melting Completion (Liquidus), °C 660
980
Melting Onset (Solidus), °C 640
860
Specific Heat Capacity, J/kg-K 900
390
Thermal Conductivity, W/m-K 170
130
Thermal Expansion, µm/m-K 24
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 44
20
Electrical Conductivity: Equal Weight (Specific), % IACS 140
21

Otherwise Unclassified Properties

Density, g/cm3 2.8
8.8
Embodied Carbon, kg CO2/kg material 8.2
10
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1180
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.6 to 19
11 to 94
Resilience: Unit (Modulus of Resilience), kJ/m3 15 to 340
400 to 4000
Stiffness to Weight: Axial, points 14
7.7
Stiffness to Weight: Bending, points 50
19
Strength to Weight: Axial, points 12 to 24
18 to 35
Strength to Weight: Bending, points 20 to 31
17 to 27
Thermal Diffusivity, mm2/s 68
38
Thermal Shock Resistance, points 5.2 to 11
19 to 38

Alloy Composition

Aluminum (Al), % 96 to 99.5
0 to 0.15
Beryllium (Be), % 0
1.9 to 2.3
Chromium (Cr), % 0 to 0.2
0 to 0.1
Cobalt (Co), % 0
0.15 to 0.7
Copper (Cu), % 0 to 0.3
95.3 to 97.8
Iron (Fe), % 0 to 0.7
0 to 0.25
Lead (Pb), % 0
0 to 0.020
Magnesium (Mg), % 0.2 to 0.8
0
Manganese (Mn), % 0.3 to 0.8
0
Nickel (Ni), % 0
0 to 0.2
Silicon (Si), % 0 to 0.6
0.2 to 0.35
Tin (Sn), % 0
0 to 0.1
Titanium (Ti), % 0 to 0.1
0 to 0.12
Zinc (Zn), % 0 to 0.4
0 to 0.1
Residuals, % 0
0 to 0.5