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7049 Aluminum vs. C18100 Copper

7049 aluminum belongs to the aluminum alloys classification, while C18100 copper belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, 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 7049 aluminum and the bottom bar is C18100 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
120
Elongation at Break, % 6.2 to 7.0
8.3
Poisson's Ratio 0.32
0.34
Shear Modulus, GPa 27
47
Shear Strength, MPa 300 to 310
300
Tensile Strength: Ultimate (UTS), MPa 510 to 530
510
Tensile Strength: Yield (Proof), MPa 420 to 450
460

Thermal Properties

Latent Heat of Fusion, J/g 370
210
Maximum Temperature: Mechanical, °C 180
200
Melting Completion (Liquidus), °C 640
1080
Melting Onset (Solidus), °C 480
1020
Specific Heat Capacity, J/kg-K 860
390
Thermal Conductivity, W/m-K 130
320
Thermal Expansion, µm/m-K 23
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 36
80
Electrical Conductivity: Equal Weight (Specific), % IACS 110
81

Otherwise Unclassified Properties

Base Metal Price, % relative 10
31
Density, g/cm3 3.1
8.9
Embodied Carbon, kg CO2/kg material 8.1
2.7
Embodied Energy, MJ/kg 140
43
Embodied Water, L/kg 1110
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31 to 34
40
Resilience: Unit (Modulus of Resilience), kJ/m3 1270 to 1440
900
Stiffness to Weight: Axial, points 13
7.3
Stiffness to Weight: Bending, points 45
18
Strength to Weight: Axial, points 46 to 47
16
Strength to Weight: Bending, points 46 to 47
16
Thermal Diffusivity, mm2/s 51
94
Thermal Shock Resistance, points 22 to 23
18

Alloy Composition

Aluminum (Al), % 85.7 to 89.5
0
Chromium (Cr), % 0.1 to 0.22
0.4 to 1.2
Copper (Cu), % 1.2 to 1.9
98.7 to 99.49
Iron (Fe), % 0 to 0.35
0
Magnesium (Mg), % 2.0 to 2.9
0.030 to 0.060
Manganese (Mn), % 0 to 0.2
0
Silicon (Si), % 0 to 0.25
0
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 7.2 to 8.2
0
Zirconium (Zr), % 0
0.080 to 0.2
Residuals, % 0
0 to 0.5