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7178 Aluminum vs. C19200 Copper

7178 aluminum belongs to the aluminum alloys classification, while C19200 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 C19200 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
120
Elongation at Break, % 4.5 to 12
2.0 to 35
Poisson's Ratio 0.32
0.34
Shear Modulus, GPa 27
44
Shear Strength, MPa 140 to 380
190 to 300
Tensile Strength: Ultimate (UTS), MPa 240 to 640
280 to 530
Tensile Strength: Yield (Proof), MPa 120 to 560
98 to 510

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
1080
Specific Heat Capacity, J/kg-K 860
390
Thermal Conductivity, W/m-K 130
240
Thermal Expansion, µm/m-K 23
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 31
58 to 74
Electrical Conductivity: Equal Weight (Specific), % IACS 91
58 to 75

Otherwise Unclassified Properties

Base Metal Price, % relative 10
30
Density, g/cm3 3.1
8.9
Embodied Carbon, kg CO2/kg material 8.2
2.6
Embodied Energy, MJ/kg 150
41
Embodied Water, L/kg 1110
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24 to 52
10 to 98
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 2220
42 to 1120
Stiffness to Weight: Axial, points 13
7.2
Stiffness to Weight: Bending, points 45
18
Strength to Weight: Axial, points 21 to 58
8.8 to 17
Strength to Weight: Bending, points 28 to 54
11 to 16
Thermal Diffusivity, mm2/s 47
69
Thermal Shock Resistance, points 10 to 28
10 to 19

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
98.5 to 99.19
Iron (Fe), % 0 to 0.5
0.8 to 1.2
Lead (Pb), % 0
0 to 0.030
Magnesium (Mg), % 2.4 to 3.1
0
Manganese (Mn), % 0 to 0.3
0
Phosphorus (P), % 0
0.010 to 0.040
Silicon (Si), % 0 to 0.4
0
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 6.3 to 7.3
0 to 0.2
Residuals, % 0
0 to 0.2