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7049 Aluminum vs. C71000 Copper-nickel

7049 aluminum belongs to the aluminum alloys classification, while C71000 copper-nickel belongs to the copper alloys. There are 24 material properties with values for both materials. Properties with values for just one material (9, 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 C71000 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
130
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 27
49
Tensile Strength: Ultimate (UTS), MPa 510 to 530
320 to 560

Thermal Properties

Latent Heat of Fusion, J/g 370
230
Maximum Temperature: Mechanical, °C 180
240
Melting Completion (Liquidus), °C 640
1200
Melting Onset (Solidus), °C 480
1150
Specific Heat Capacity, J/kg-K 860
400
Thermal Conductivity, W/m-K 130
43
Thermal Expansion, µm/m-K 23
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 36
6.5
Electrical Conductivity: Equal Weight (Specific), % IACS 110
6.6

Otherwise Unclassified Properties

Base Metal Price, % relative 10
37
Density, g/cm3 3.1
8.9
Embodied Carbon, kg CO2/kg material 8.1
4.3
Embodied Energy, MJ/kg 140
63
Embodied Water, L/kg 1110
290

Common Calculations

Stiffness to Weight: Axial, points 13
8.2
Stiffness to Weight: Bending, points 45
19
Strength to Weight: Axial, points 46 to 47
10 to 18
Strength to Weight: Bending, points 46 to 47
12 to 17
Thermal Diffusivity, mm2/s 51
12
Thermal Shock Resistance, points 22 to 23
12 to 20

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
73.5 to 80.5
Iron (Fe), % 0 to 0.35
0.5 to 1.0
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 2.0 to 2.9
0
Manganese (Mn), % 0 to 0.2
0 to 1.0
Nickel (Ni), % 0
19 to 23
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