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A242.0 Aluminum vs. C71640 Copper-nickel

A242.0 aluminum belongs to the aluminum alloys classification, while C71640 copper-nickel belongs to the copper alloys. There are 24 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 A242.0 aluminum and the bottom bar is C71640 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
140
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 27
52
Tensile Strength: Ultimate (UTS), MPa 220
490 to 630

Thermal Properties

Latent Heat of Fusion, J/g 390
240
Maximum Temperature: Mechanical, °C 210
260
Melting Completion (Liquidus), °C 680
1180
Melting Onset (Solidus), °C 550
1120
Specific Heat Capacity, J/kg-K 870
410
Thermal Conductivity, W/m-K 140
29
Thermal Expansion, µm/m-K 23
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 110
7.1

Otherwise Unclassified Properties

Base Metal Price, % relative 12
40
Density, g/cm3 3.1
8.9
Embodied Carbon, kg CO2/kg material 8.3
5.0
Embodied Energy, MJ/kg 150
73
Embodied Water, L/kg 1130
280

Common Calculations

Stiffness to Weight: Axial, points 13
8.7
Stiffness to Weight: Bending, points 45
20
Strength to Weight: Axial, points 20
15 to 20
Strength to Weight: Bending, points 26
16 to 18
Thermal Diffusivity, mm2/s 52
8.2
Thermal Shock Resistance, points 9.3
16 to 21

Alloy Composition

Aluminum (Al), % 89.3 to 93.1
0
Chromium (Cr), % 0.15 to 0.25
0
Copper (Cu), % 3.7 to 4.5
61.7 to 67.8
Iron (Fe), % 0 to 0.8
1.7 to 2.3
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 1.2 to 1.7
0
Manganese (Mn), % 0 to 0.1
1.5 to 2.5
Nickel (Ni), % 1.8 to 2.3
29 to 32
Silicon (Si), % 0 to 0.6
0
Titanium (Ti), % 0.070 to 0.2
0
Zinc (Zn), % 0 to 0.1
0 to 1.0
Residuals, % 0
0 to 0.5