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7049 Aluminum vs. C70400 Copper-nickel

7049 aluminum belongs to the aluminum alloys classification, while C70400 copper-nickel belongs to the copper alloys. There are 26 material properties with values for both materials. Properties with values for just one material (5, 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 C70400 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
120
Poisson's Ratio 0.32
0.34
Shear Modulus, GPa 27
45
Tensile Strength: Ultimate (UTS), MPa 510 to 530
300 to 310
Tensile Strength: Yield (Proof), MPa 420 to 450
95 to 230

Thermal Properties

Latent Heat of Fusion, J/g 370
210
Maximum Temperature: Mechanical, °C 180
210
Melting Completion (Liquidus), °C 640
1120
Melting Onset (Solidus), °C 480
1060
Specific Heat Capacity, J/kg-K 860
390
Thermal Conductivity, W/m-K 130
64
Thermal Expansion, µm/m-K 23
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 36
14
Electrical Conductivity: Equal Weight (Specific), % IACS 110
14

Otherwise Unclassified Properties

Base Metal Price, % relative 10
32
Density, g/cm3 3.1
8.9
Embodied Carbon, kg CO2/kg material 8.1
3.0
Embodied Energy, MJ/kg 140
47
Embodied Water, L/kg 1110
300

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 1270 to 1440
38 to 220
Stiffness to Weight: Axial, points 13
7.5
Stiffness to Weight: Bending, points 45
19
Strength to Weight: Axial, points 46 to 47
9.3 to 9.8
Strength to Weight: Bending, points 46 to 47
11 to 12
Thermal Diffusivity, mm2/s 51
18
Thermal Shock Resistance, points 22 to 23
10 to 11

Alloy Composition

Aluminum (Al), % 85.7 to 89.5
0
Chromium (Cr), % 0.1 to 0.22
0
Copper (Cu), % 1.2 to 1.9
89.8 to 93.6
Iron (Fe), % 0 to 0.35
1.3 to 1.7
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 2.0 to 2.9
0
Manganese (Mn), % 0 to 0.2
0.3 to 0.8
Nickel (Ni), % 0
4.8 to 6.2
Silicon (Si), % 0 to 0.25
0
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 7.2 to 8.2
0 to 1.0
Residuals, % 0
0 to 0.5