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7178 Aluminum vs. C15000 Copper

7178 aluminum belongs to the aluminum alloys classification, while C15000 copper belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (1, 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 7178 aluminum and the bottom bar is C15000 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
120
Elongation at Break, % 4.5 to 12
13 to 54
Poisson's Ratio 0.32
0.34
Shear Modulus, GPa 27
43
Shear Strength, MPa 140 to 380
150 to 280
Tensile Strength: Ultimate (UTS), MPa 240 to 640
200 to 460
Tensile Strength: Yield (Proof), MPa 120 to 560
45 to 460

Thermal Properties

Latent Heat of Fusion, J/g 370
210
Maximum Temperature: Mechanical, °C 180
200
Melting Completion (Liquidus), °C 630
1080
Melting Onset (Solidus), °C 480
980
Specific Heat Capacity, J/kg-K 860
390
Thermal Conductivity, W/m-K 130
370
Thermal Expansion, µm/m-K 23
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 31
93
Electrical Conductivity: Equal Weight (Specific), % IACS 91
93

Otherwise Unclassified Properties

Base Metal Price, % relative 10
31
Density, g/cm3 3.1
9.0
Embodied Carbon, kg CO2/kg material 8.2
2.7
Embodied Energy, MJ/kg 150
43
Embodied Water, L/kg 1110
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24 to 52
19 to 250
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 2220
8.7 to 910
Stiffness to Weight: Axial, points 13
7.2
Stiffness to Weight: Bending, points 45
18
Strength to Weight: Axial, points 21 to 58
6.2 to 14
Strength to Weight: Bending, points 28 to 54
8.5 to 15
Thermal Diffusivity, mm2/s 47
110
Thermal Shock Resistance, points 10 to 28
7.3 to 17

Alloy Composition

Aluminum (Al), % 85.4 to 89.5
0
Chromium (Cr), % 0.18 to 0.28
0
Copper (Cu), % 1.6 to 2.4
99.8 to 99.9
Iron (Fe), % 0 to 0.5
0
Magnesium (Mg), % 2.4 to 3.1
0
Manganese (Mn), % 0 to 0.3
0
Silicon (Si), % 0 to 0.4
0
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 6.3 to 7.3
0
Zirconium (Zr), % 0
0.1 to 0.2
Residuals, % 0 to 0.15
0