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7049A Aluminum vs. C72700 Copper-nickel

7049A aluminum belongs to the aluminum alloys classification, while C72700 copper-nickel belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (1, 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 7049A aluminum and the bottom bar is C72700 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
120
Elongation at Break, % 5.0 to 5.7
4.0 to 36
Poisson's Ratio 0.32
0.34
Shear Modulus, GPa 27
44
Shear Strength, MPa 340 to 350
310 to 620
Tensile Strength: Ultimate (UTS), MPa 580 to 590
460 to 1070
Tensile Strength: Yield (Proof), MPa 500 to 530
580 to 1060

Thermal Properties

Latent Heat of Fusion, J/g 370
210
Maximum Temperature: Mechanical, °C 200
200
Melting Completion (Liquidus), °C 640
1100
Melting Onset (Solidus), °C 430
930
Specific Heat Capacity, J/kg-K 850
380
Thermal Conductivity, W/m-K 130
54
Thermal Expansion, µm/m-K 24
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
11
Electrical Conductivity: Equal Weight (Specific), % IACS 120
11

Otherwise Unclassified Properties

Base Metal Price, % relative 10
36
Density, g/cm3 3.1
8.8
Embodied Carbon, kg CO2/kg material 8.2
4.0
Embodied Energy, MJ/kg 150
62
Embodied Water, L/kg 1100
350

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 28 to 32
20 to 380
Resilience: Unit (Modulus of Resilience), kJ/m3 1800 to 1990
1420 to 4770
Stiffness to Weight: Axial, points 13
7.4
Stiffness to Weight: Bending, points 44
19
Strength to Weight: Axial, points 52 to 53
14 to 34
Strength to Weight: Bending, points 50 to 51
15 to 26
Thermal Diffusivity, mm2/s 50
16
Thermal Shock Resistance, points 25
16 to 38

Alloy Composition

Aluminum (Al), % 84.6 to 89.5
0
Chromium (Cr), % 0.050 to 0.25
0
Copper (Cu), % 1.2 to 1.9
82.1 to 86
Iron (Fe), % 0 to 0.5
0 to 0.5
Lead (Pb), % 0
0 to 0.020
Magnesium (Mg), % 2.1 to 3.1
0 to 0.15
Manganese (Mn), % 0 to 0.5
0.050 to 0.3
Nickel (Ni), % 0
8.5 to 9.5
Niobium (Nb), % 0
0 to 0.1
Silicon (Si), % 0 to 0.4
0
Tin (Sn), % 0
5.5 to 6.5
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 7.2 to 8.4
0 to 0.5
Zirconium (Zr), % 0 to 0.25
0
Residuals, % 0
0 to 0.3