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EN AC-71100 Aluminum vs. C72900 Copper-nickel

EN AC-71100 aluminum belongs to the aluminum alloys classification, while C72900 copper-nickel belongs to the copper alloys. There are 26 material properties with values for both materials. Properties with values for just one material (5, 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 EN AC-71100 aluminum and the bottom bar is C72900 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 72
120
Elongation at Break, % 1.1
6.0 to 20
Poisson's Ratio 0.32
0.34
Shear Modulus, GPa 27
45
Tensile Strength: Ultimate (UTS), MPa 260
870 to 1080
Tensile Strength: Yield (Proof), MPa 230
700 to 920

Thermal Properties

Latent Heat of Fusion, J/g 490
210
Maximum Temperature: Mechanical, °C 170
210
Melting Completion (Liquidus), °C 580
1120
Melting Onset (Solidus), °C 520
950
Specific Heat Capacity, J/kg-K 860
380
Thermal Expansion, µm/m-K 22
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 97
8.0

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
39
Density, g/cm3 2.9
8.8
Embodied Carbon, kg CO2/kg material 7.4
4.6
Embodied Energy, MJ/kg 140
72
Embodied Water, L/kg 1010
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.8
49 to 210
Resilience: Unit (Modulus of Resilience), kJ/m3 360
2030 to 3490
Stiffness to Weight: Axial, points 14
7.6
Stiffness to Weight: Bending, points 47
19
Strength to Weight: Axial, points 25
27 to 34
Strength to Weight: Bending, points 31
23 to 27
Thermal Shock Resistance, points 12
31 to 38

Alloy Composition

Aluminum (Al), % 78.7 to 83.3
0
Copper (Cu), % 0 to 0.1
74.1 to 78
Iron (Fe), % 0 to 0.3
0 to 0.5
Lead (Pb), % 0
0 to 0.020
Magnesium (Mg), % 0.2 to 0.5
0 to 0.15
Manganese (Mn), % 0 to 0.15
0 to 0.3
Nickel (Ni), % 0
14.5 to 15.5
Niobium (Nb), % 0
0 to 0.1
Silicon (Si), % 7.5 to 9.5
0
Tin (Sn), % 0
7.5 to 8.5
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 9.0 to 10.5
0 to 0.5
Residuals, % 0
0 to 0.3