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771.0 Aluminum vs. C70250 Copper

771.0 aluminum belongs to the aluminum alloys classification, while C70250 copper belongs to the copper alloys. There are 24 material properties with values for both materials. Properties with values for just one material (7, 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 771.0 aluminum and the bottom bar is C70250 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
120
Poisson's Ratio 0.32
0.34
Shear Modulus, GPa 26
44
Tensile Strength: Ultimate (UTS), MPa 250 to 370
520 to 740

Thermal Properties

Latent Heat of Fusion, J/g 380
220
Maximum Temperature: Mechanical, °C 180
210
Melting Completion (Liquidus), °C 630
1100
Melting Onset (Solidus), °C 620
1080
Specific Heat Capacity, J/kg-K 870
390
Thermal Conductivity, W/m-K 140 to 150
170
Thermal Expansion, µm/m-K 24
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
36 to 50
Electrical Conductivity: Equal Weight (Specific), % IACS 82
37 to 51

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
31
Density, g/cm3 3.0
8.9
Embodied Carbon, kg CO2/kg material 8.0
2.9
Embodied Energy, MJ/kg 150
45
Embodied Water, L/kg 1130
310

Common Calculations

Stiffness to Weight: Axial, points 13
7.4
Stiffness to Weight: Bending, points 46
18
Strength to Weight: Axial, points 23 to 35
16 to 23
Strength to Weight: Bending, points 29 to 39
16 to 21
Thermal Diffusivity, mm2/s 54 to 58
49
Thermal Shock Resistance, points 11 to 16
18 to 26

Alloy Composition

Aluminum (Al), % 90.5 to 92.5
0
Chromium (Cr), % 0.060 to 0.2
0
Copper (Cu), % 0 to 0.1
92.7 to 97.5
Iron (Fe), % 0 to 0.15
0
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 0.8 to 1.0
0.050 to 0.3
Manganese (Mn), % 0 to 0.1
0 to 0.1
Nickel (Ni), % 0
2.2 to 4.2
Silicon (Si), % 0 to 0.15
0.25 to 1.2
Titanium (Ti), % 0.1 to 0.2
0
Zinc (Zn), % 6.5 to 7.5
0 to 1.0
Residuals, % 0
0 to 0.5