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C18400 Copper vs. 7049A Aluminum

C18400 copper belongs to the copper alloys classification, while 7049A aluminum belongs to the aluminum 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 C18400 copper and the bottom bar is 7049A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
71
Elongation at Break, % 13 to 50
5.0 to 5.7
Poisson's Ratio 0.34
0.32
Shear Modulus, GPa 44
27
Shear Strength, MPa 190 to 310
340 to 350
Tensile Strength: Ultimate (UTS), MPa 270 to 490
580 to 590
Tensile Strength: Yield (Proof), MPa 110 to 480
500 to 530

Thermal Properties

Latent Heat of Fusion, J/g 210
370
Maximum Temperature: Mechanical, °C 200
200
Melting Completion (Liquidus), °C 1080
640
Melting Onset (Solidus), °C 1070
430
Specific Heat Capacity, J/kg-K 390
850
Thermal Conductivity, W/m-K 320
130
Thermal Expansion, µm/m-K 17
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 80
40
Electrical Conductivity: Equal Weight (Specific), % IACS 81
120

Otherwise Unclassified Properties

Base Metal Price, % relative 31
10
Density, g/cm3 8.9
3.1
Embodied Carbon, kg CO2/kg material 2.6
8.2
Embodied Energy, MJ/kg 41
150
Embodied Water, L/kg 310
1100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 63 to 120
28 to 32
Resilience: Unit (Modulus of Resilience), kJ/m3 54 to 980
1800 to 1990
Stiffness to Weight: Axial, points 7.3
13
Stiffness to Weight: Bending, points 18
44
Strength to Weight: Axial, points 8.5 to 15
52 to 53
Strength to Weight: Bending, points 10 to 16
50 to 51
Thermal Diffusivity, mm2/s 94
50
Thermal Shock Resistance, points 9.6 to 17
25

Alloy Composition

Aluminum (Al), % 0
84.6 to 89.5
Arsenic (As), % 0 to 0.0050
0
Calcium (Ca), % 0 to 0.0050
0
Chromium (Cr), % 0.4 to 1.2
0.050 to 0.25
Copper (Cu), % 97.2 to 99.6
1.2 to 1.9
Iron (Fe), % 0 to 0.15
0 to 0.5
Lithium (Li), % 0 to 0.050
0
Magnesium (Mg), % 0
2.1 to 3.1
Manganese (Mn), % 0
0 to 0.5
Phosphorus (P), % 0 to 0.050
0
Silicon (Si), % 0 to 0.1
0 to 0.4
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0 to 0.7
7.2 to 8.4
Zirconium (Zr), % 0
0 to 0.25
Residuals, % 0
0 to 0.15