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7076 Aluminum vs. CC381H Copper-nickel

7076 aluminum belongs to the aluminum alloys classification, while CC381H copper-nickel belongs to the copper alloys. There are 29 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 7076 aluminum and the bottom bar is CC381H copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
91
Elastic (Young's, Tensile) Modulus, GPa 70
140
Elongation at Break, % 6.2
20
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 27
52
Tensile Strength: Ultimate (UTS), MPa 530
380
Tensile Strength: Yield (Proof), MPa 460
140

Thermal Properties

Latent Heat of Fusion, J/g 380
240
Maximum Temperature: Mechanical, °C 170
260
Melting Completion (Liquidus), °C 630
1180
Melting Onset (Solidus), °C 460
1120
Specific Heat Capacity, J/kg-K 860
410
Thermal Conductivity, W/m-K 140
30
Thermal Expansion, µm/m-K 24
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35
6.8
Electrical Conductivity: Equal Weight (Specific), % IACS 100
6.9

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
40
Density, g/cm3 3.0
8.9
Embodied Carbon, kg CO2/kg material 8.0
5.0
Embodied Energy, MJ/kg 150
73
Embodied Water, L/kg 1110
280

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31
60
Resilience: Unit (Modulus of Resilience), kJ/m3 1510
68
Stiffness to Weight: Axial, points 13
8.6
Stiffness to Weight: Bending, points 45
19
Strength to Weight: Axial, points 49
12
Strength to Weight: Bending, points 48
13
Thermal Diffusivity, mm2/s 54
8.4
Thermal Shock Resistance, points 23
13

Alloy Composition

Aluminum (Al), % 86.9 to 91.2
0 to 0.010
Carbon (C), % 0
0 to 0.030
Copper (Cu), % 0.3 to 1.0
64.5 to 69.9
Iron (Fe), % 0 to 0.6
0.5 to 1.5
Lead (Pb), % 0
0 to 0.030
Magnesium (Mg), % 1.2 to 2.0
0
Manganese (Mn), % 0.3 to 0.8
0.6 to 1.2
Nickel (Ni), % 0
29 to 31
Phosphorus (P), % 0
0 to 0.010
Silicon (Si), % 0 to 0.4
0 to 0.1
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 7.0 to 8.0
0 to 0.5
Residuals, % 0 to 0.15
0