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7178 Aluminum vs. C17510 Copper

7178 aluminum belongs to the aluminum alloys classification, while C17510 copper belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (2, 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 C17510 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
120
Elongation at Break, % 4.5 to 12
5.4 to 37
Poisson's Ratio 0.32
0.34
Shear Modulus, GPa 27
44
Shear Strength, MPa 140 to 380
210 to 500
Tensile Strength: Ultimate (UTS), MPa 240 to 640
310 to 860
Tensile Strength: Yield (Proof), MPa 120 to 560
120 to 750

Thermal Properties

Latent Heat of Fusion, J/g 370
220
Maximum Temperature: Mechanical, °C 180
220
Melting Completion (Liquidus), °C 630
1070
Melting Onset (Solidus), °C 480
1030
Specific Heat Capacity, J/kg-K 860
390
Thermal Conductivity, W/m-K 130
210
Thermal Expansion, µm/m-K 23
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 31
22 to 54
Electrical Conductivity: Equal Weight (Specific), % IACS 91
23 to 54

Otherwise Unclassified Properties

Base Metal Price, % relative 10
49
Density, g/cm3 3.1
8.9
Embodied Carbon, kg CO2/kg material 8.2
4.2
Embodied Energy, MJ/kg 150
65
Embodied Water, L/kg 1110
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24 to 52
39 to 92
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 2220
64 to 2410
Stiffness to Weight: Axial, points 13
7.4
Stiffness to Weight: Bending, points 45
18
Strength to Weight: Axial, points 21 to 58
9.7 to 27
Strength to Weight: Bending, points 28 to 54
11 to 23
Thermal Diffusivity, mm2/s 47
60
Thermal Shock Resistance, points 10 to 28
11 to 30

Alloy Composition

Aluminum (Al), % 85.4 to 89.5
0 to 0.2
Beryllium (Be), % 0
0.2 to 0.6
Chromium (Cr), % 0.18 to 0.28
0
Cobalt (Co), % 0
0 to 0.3
Copper (Cu), % 1.6 to 2.4
95.9 to 98.4
Iron (Fe), % 0 to 0.5
0 to 0.1
Magnesium (Mg), % 2.4 to 3.1
0
Manganese (Mn), % 0 to 0.3
0
Nickel (Ni), % 0
1.4 to 2.2
Silicon (Si), % 0 to 0.4
0 to 0.2
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 6.3 to 7.3
0
Residuals, % 0
0 to 0.5