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238.0 Aluminum vs. C70400 Copper-nickel

238.0 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 (3, 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 C70400 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 76
120
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 28
45
Tensile Strength: Ultimate (UTS), MPa 210
300 to 310
Tensile Strength: Yield (Proof), MPa 170
95 to 230

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
1060
Specific Heat Capacity, J/kg-K 840
390
Thermal Conductivity, W/m-K 100
64
Thermal Expansion, µm/m-K 21
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
14
Electrical Conductivity: Equal Weight (Specific), % IACS 67
14

Otherwise Unclassified Properties

Base Metal Price, % relative 12
32
Density, g/cm3 3.4
8.9
Embodied Carbon, kg CO2/kg material 7.4
3.0
Embodied Energy, MJ/kg 140
47
Embodied Water, L/kg 1040
300

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 180
38 to 220
Stiffness to Weight: Axial, points 12
7.5
Stiffness to Weight: Bending, points 42
19
Strength to Weight: Axial, points 17
9.3 to 9.8
Strength to Weight: Bending, points 23
11 to 12
Thermal Diffusivity, mm2/s 37
18
Thermal Shock Resistance, points 9.1
10 to 11

Alloy Composition

Aluminum (Al), % 81.9 to 84.9
0
Copper (Cu), % 9.5 to 10.5
89.8 to 93.6
Iron (Fe), % 1.0 to 1.5
1.3 to 1.7
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 0 to 0.25
0
Manganese (Mn), % 0
0.3 to 0.8
Nickel (Ni), % 0
4.8 to 6.2
Silicon (Si), % 3.6 to 4.4
0
Zinc (Zn), % 1.0 to 1.5
0 to 1.0
Residuals, % 0
0 to 0.5