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3105 Aluminum vs. C17500 Copper

3105 aluminum belongs to the aluminum alloys classification, while C17500 copper belongs to the copper alloys. There are 30 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 3105 aluminum and the bottom bar is C17500 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
120
Elongation at Break, % 1.1 to 20
6.0 to 30
Fatigue Strength, MPa 39 to 95
170 to 310
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 26
45
Shear Strength, MPa 77 to 140
200 to 520
Tensile Strength: Ultimate (UTS), MPa 120 to 240
310 to 860
Tensile Strength: Yield (Proof), MPa 46 to 220
170 to 760

Thermal Properties

Latent Heat of Fusion, J/g 400
220
Maximum Temperature: Mechanical, °C 180
220
Melting Completion (Liquidus), °C 660
1060
Melting Onset (Solidus), °C 640
1020
Specific Heat Capacity, J/kg-K 900
390
Thermal Conductivity, W/m-K 170
200
Thermal Expansion, µm/m-K 24
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 44
24 to 53
Electrical Conductivity: Equal Weight (Specific), % IACS 140
24 to 54

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
60
Density, g/cm3 2.8
8.9
Embodied Carbon, kg CO2/kg material 8.2
4.7
Embodied Energy, MJ/kg 150
73
Embodied Water, L/kg 1180
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.6 to 19
30 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 15 to 340
120 to 2390
Stiffness to Weight: Axial, points 14
7.5
Stiffness to Weight: Bending, points 50
18
Strength to Weight: Axial, points 12 to 24
9.7 to 27
Strength to Weight: Bending, points 20 to 31
11 to 23
Thermal Diffusivity, mm2/s 68
59
Thermal Shock Resistance, points 5.2 to 11
11 to 29

Alloy Composition

Aluminum (Al), % 96 to 99.5
0 to 0.2
Beryllium (Be), % 0
0.4 to 0.7
Chromium (Cr), % 0 to 0.2
0
Cobalt (Co), % 0
2.4 to 2.7
Copper (Cu), % 0 to 0.3
95.6 to 97.2
Iron (Fe), % 0 to 0.7
0 to 0.1
Magnesium (Mg), % 0.2 to 0.8
0
Manganese (Mn), % 0.3 to 0.8
0
Silicon (Si), % 0 to 0.6
0 to 0.2
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.4
0
Residuals, % 0
0 to 0.5