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CR011A Copper vs. 7049 Aluminum

CR011A copper belongs to the copper alloys classification, while 7049 aluminum belongs to the aluminum alloys. There are 28 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 CR011A copper and the bottom bar is 7049 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
70
Elongation at Break, % 15
6.2 to 7.0
Poisson's Ratio 0.34
0.32
Shear Modulus, GPa 43
27
Tensile Strength: Ultimate (UTS), MPa 220
510 to 530
Tensile Strength: Yield (Proof), MPa 130
420 to 450

Thermal Properties

Latent Heat of Fusion, J/g 210
370
Maximum Temperature: Mechanical, °C 200
180
Melting Completion (Liquidus), °C 1090
640
Melting Onset (Solidus), °C 1040
480
Specific Heat Capacity, J/kg-K 390
860
Thermal Conductivity, W/m-K 390
130
Thermal Expansion, µm/m-K 17
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 100
36
Electrical Conductivity: Equal Weight (Specific), % IACS 100
110

Otherwise Unclassified Properties

Base Metal Price, % relative 32
10
Density, g/cm3 9.0
3.1
Embodied Carbon, kg CO2/kg material 2.6
8.1
Embodied Energy, MJ/kg 42
140
Embodied Water, L/kg 340
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 29
31 to 34
Resilience: Unit (Modulus of Resilience), kJ/m3 76
1270 to 1440
Stiffness to Weight: Axial, points 7.2
13
Stiffness to Weight: Bending, points 18
45
Strength to Weight: Axial, points 6.8
46 to 47
Strength to Weight: Bending, points 9.0
46 to 47
Thermal Diffusivity, mm2/s 110
51
Thermal Shock Resistance, points 7.8
22 to 23

Alloy Composition


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Aluminum (Al), % 0
85.7 to 89.5
Bismuth (Bi), % 0 to 0.00050
0
Chromium (Cr), % 0
0.1 to 0.22
Copper (Cu), % 99.88 to 99.97
1.2 to 1.9
Iron (Fe), % 0
0 to 0.35
Magnesium (Mg), % 0
2.0 to 2.9
Manganese (Mn), % 0
0 to 0.2
Oxygen (O), % 0 to 0.040
0
Silicon (Si), % 0
0 to 0.25
Silver (Ag), % 0.030 to 0.050
0
Titanium (Ti), % 0
0 to 0.1
Zinc (Zn), % 0
7.2 to 8.2
Residuals, % 0
0 to 0.15