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238.0 Aluminum vs. C72900 Copper-nickel

238.0 aluminum belongs to the aluminum alloys classification, while C72900 copper-nickel belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (2, 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 238.0 aluminum and the bottom bar is C72900 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 76
120
Elongation at Break, % 1.5
6.0 to 20
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 28
45
Tensile Strength: Ultimate (UTS), MPa 210
870 to 1080
Tensile Strength: Yield (Proof), MPa 170
700 to 920

Thermal Properties

Latent Heat of Fusion, J/g 430
210
Maximum Temperature: Mechanical, °C 170
210
Melting Completion (Liquidus), °C 600
1120
Melting Onset (Solidus), °C 510
950
Specific Heat Capacity, J/kg-K 840
380
Thermal Conductivity, W/m-K 100
29
Thermal Expansion, µm/m-K 21
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 67
8.0

Otherwise Unclassified Properties

Base Metal Price, % relative 12
39
Density, g/cm3 3.4
8.8
Embodied Carbon, kg CO2/kg material 7.4
4.6
Embodied Energy, MJ/kg 140
72
Embodied Water, L/kg 1040
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.9
49 to 210
Resilience: Unit (Modulus of Resilience), kJ/m3 180
2030 to 3490
Stiffness to Weight: Axial, points 12
7.6
Stiffness to Weight: Bending, points 42
19
Strength to Weight: Axial, points 17
27 to 34
Strength to Weight: Bending, points 23
23 to 27
Thermal Diffusivity, mm2/s 37
8.6
Thermal Shock Resistance, points 9.1
31 to 38

Alloy Composition

Aluminum (Al), % 81.9 to 84.9
0
Copper (Cu), % 9.5 to 10.5
74.1 to 78
Iron (Fe), % 1.0 to 1.5
0 to 0.5
Lead (Pb), % 0
0 to 0.020
Magnesium (Mg), % 0 to 0.25
0 to 0.15
Manganese (Mn), % 0
0 to 0.3
Nickel (Ni), % 0
14.5 to 15.5
Niobium (Nb), % 0
0 to 0.1
Silicon (Si), % 3.6 to 4.4
0
Tin (Sn), % 0
7.5 to 8.5
Zinc (Zn), % 1.0 to 1.5
0 to 0.5
Residuals, % 0
0 to 0.3