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7178 Aluminum vs. C19100 Copper

7178 aluminum belongs to the aluminum alloys classification, while C19100 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 C19100 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
120
Elongation at Break, % 4.5 to 12
17 to 37
Poisson's Ratio 0.32
0.34
Shear Modulus, GPa 27
43
Shear Strength, MPa 140 to 380
170 to 330
Tensile Strength: Ultimate (UTS), MPa 240 to 640
250 to 630
Tensile Strength: Yield (Proof), MPa 120 to 560
75 to 550

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
1040
Specific Heat Capacity, J/kg-K 860
390
Thermal Conductivity, W/m-K 130
250
Thermal Expansion, µm/m-K 23
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 31
55
Electrical Conductivity: Equal Weight (Specific), % IACS 91
56

Otherwise Unclassified Properties

Base Metal Price, % relative 10
33
Density, g/cm3 3.1
8.9
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
60 to 99
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 2220
24 to 1310
Stiffness to Weight: Axial, points 13
7.2
Stiffness to Weight: Bending, points 45
18
Strength to Weight: Axial, points 21 to 58
7.7 to 20
Strength to Weight: Bending, points 28 to 54
9.9 to 18
Thermal Diffusivity, mm2/s 47
73
Thermal Shock Resistance, points 10 to 28
8.9 to 22

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
96.5 to 98.6
Iron (Fe), % 0 to 0.5
0 to 0.2
Lead (Pb), % 0
0 to 0.1
Magnesium (Mg), % 2.4 to 3.1
0
Manganese (Mn), % 0 to 0.3
0
Nickel (Ni), % 0
0.9 to 1.3
Phosphorus (P), % 0
0.15 to 0.35
Silicon (Si), % 0 to 0.4
0
Tellurium (Te), % 0
0.35 to 0.6
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 6.3 to 7.3
0 to 0.5
Residuals, % 0
0 to 0.5