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C70250 Copper vs. 3105 Aluminum

C70250 copper belongs to the copper alloys classification, while 3105 aluminum belongs to the aluminum alloys. There are 24 material properties with values for both materials. Properties with values for just one material (8, 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 C70250 copper and the bottom bar is 3105 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
69
Poisson's Ratio 0.34
0.33
Shear Modulus, GPa 44
26
Tensile Strength: Ultimate (UTS), MPa 520 to 740
120 to 240

Thermal Properties

Latent Heat of Fusion, J/g 220
400
Maximum Temperature: Mechanical, °C 210
180
Melting Completion (Liquidus), °C 1100
660
Melting Onset (Solidus), °C 1080
640
Specific Heat Capacity, J/kg-K 390
900
Thermal Conductivity, W/m-K 170
170
Thermal Expansion, µm/m-K 17
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 36 to 50
44
Electrical Conductivity: Equal Weight (Specific), % IACS 37 to 51
140

Otherwise Unclassified Properties

Base Metal Price, % relative 31
9.5
Density, g/cm3 8.9
2.8
Embodied Carbon, kg CO2/kg material 2.9
8.2
Embodied Energy, MJ/kg 45
150
Embodied Water, L/kg 310
1180

Common Calculations

Stiffness to Weight: Axial, points 7.4
14
Stiffness to Weight: Bending, points 18
50
Strength to Weight: Axial, points 16 to 23
12 to 24
Strength to Weight: Bending, points 16 to 21
20 to 31
Thermal Diffusivity, mm2/s 49
68
Thermal Shock Resistance, points 18 to 26
5.2 to 11

Alloy Composition

Aluminum (Al), % 0
96 to 99.5
Chromium (Cr), % 0
0 to 0.2
Copper (Cu), % 92.7 to 97.5
0 to 0.3
Iron (Fe), % 0
0 to 0.7
Lead (Pb), % 0 to 0.050
0
Magnesium (Mg), % 0.050 to 0.3
0.2 to 0.8
Manganese (Mn), % 0 to 0.1
0.3 to 0.8
Nickel (Ni), % 2.2 to 4.2
0
Silicon (Si), % 0.25 to 1.2
0 to 0.6
Titanium (Ti), % 0
0 to 0.1
Zinc (Zn), % 0 to 1.0
0 to 0.4
Residuals, % 0
0 to 0.15