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6105 Aluminum vs. C71640 Copper-nickel

6105 aluminum belongs to the aluminum alloys classification, while C71640 copper-nickel belongs to the copper alloys. There are 26 material properties with values for both materials. Properties with values for just one material (4, 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 6105 aluminum and the bottom bar is C71640 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
140
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
52
Tensile Strength: Ultimate (UTS), MPa 190 to 280
490 to 630
Tensile Strength: Yield (Proof), MPa 120 to 270
190 to 460

Thermal Properties

Latent Heat of Fusion, J/g 410
240
Maximum Temperature: Mechanical, °C 160
260
Melting Completion (Liquidus), °C 650
1180
Melting Onset (Solidus), °C 600
1120
Specific Heat Capacity, J/kg-K 900
410
Thermal Conductivity, W/m-K 180 to 190
29
Thermal Expansion, µm/m-K 23
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 46 to 50
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 150 to 170
7.1

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
40
Density, g/cm3 2.7
8.9
Embodied Carbon, kg CO2/kg material 8.3
5.0
Embodied Energy, MJ/kg 150
73
Embodied Water, L/kg 1180
280

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 100 to 550
130 to 750
Stiffness to Weight: Axial, points 14
8.7
Stiffness to Weight: Bending, points 51
20
Strength to Weight: Axial, points 20 to 29
15 to 20
Strength to Weight: Bending, points 28 to 35
16 to 18
Thermal Diffusivity, mm2/s 72 to 79
8.2
Thermal Shock Resistance, points 8.6 to 12
16 to 21

Alloy Composition

Aluminum (Al), % 97.2 to 99
0
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 0 to 0.1
61.7 to 67.8
Iron (Fe), % 0 to 0.35
1.7 to 2.3
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 0.45 to 0.8
0
Manganese (Mn), % 0 to 0.1
1.5 to 2.5
Nickel (Ni), % 0
29 to 32
Silicon (Si), % 0.6 to 1.0
0
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.1
0 to 1.0
Residuals, % 0
0 to 0.5