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CR012A Copper vs. 7049A Aluminum

CR012A copper belongs to the copper alloys classification, while 7049A aluminum belongs to the aluminum 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 CR012A copper and the bottom bar is 7049A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
71
Elongation at Break, % 15
5.0 to 5.7
Poisson's Ratio 0.34
0.32
Shear Modulus, GPa 43
27
Tensile Strength: Ultimate (UTS), MPa 220
580 to 590
Tensile Strength: Yield (Proof), MPa 130
500 to 530

Thermal Properties

Latent Heat of Fusion, J/g 210
370
Maximum Temperature: Mechanical, °C 200
200
Melting Completion (Liquidus), °C 1090
640
Melting Onset (Solidus), °C 1040
430
Specific Heat Capacity, J/kg-K 390
850
Thermal Conductivity, W/m-K 390
130
Thermal Expansion, µm/m-K 17
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 100
40
Electrical Conductivity: Equal Weight (Specific), % IACS 100
120

Otherwise Unclassified Properties

Base Metal Price, % relative 33
10
Density, g/cm3 9.0
3.1
Embodied Carbon, kg CO2/kg material 2.7
8.2
Embodied Energy, MJ/kg 42
150
Embodied Water, L/kg 360
1100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 29
28 to 32
Resilience: Unit (Modulus of Resilience), kJ/m3 76
1800 to 1990
Stiffness to Weight: Axial, points 7.2
13
Stiffness to Weight: Bending, points 18
44
Strength to Weight: Axial, points 6.8
52 to 53
Strength to Weight: Bending, points 9.0
50 to 51
Thermal Diffusivity, mm2/s 110
50
Thermal Shock Resistance, points 7.8
25

Alloy Composition


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Aluminum (Al), % 0
84.6 to 89.5
Bismuth (Bi), % 0 to 0.00050
0
Chromium (Cr), % 0
0.050 to 0.25
Copper (Cu), % 99.85 to 99.94
1.2 to 1.9
Iron (Fe), % 0
0 to 0.5
Magnesium (Mg), % 0
2.1 to 3.1
Manganese (Mn), % 0
0 to 0.5
Oxygen (O), % 0 to 0.040
0
Silicon (Si), % 0
0 to 0.4
Silver (Ag), % 0.060 to 0.080
0
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
7.2 to 8.4
Zirconium (Zr), % 0
0 to 0.25
Residuals, % 0
0 to 0.15