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4047 Aluminum vs. CR018A Copper

4047 aluminum belongs to the aluminum alloys classification, while CR018A copper belongs to the copper alloys. There are 28 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 4047 aluminum and the bottom bar is CR018A copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 72
120
Elongation at Break, % 3.4
15
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 27
43
Tensile Strength: Ultimate (UTS), MPa 120
220
Tensile Strength: Yield (Proof), MPa 64
130

Thermal Properties

Latent Heat of Fusion, J/g 570
210
Maximum Temperature: Mechanical, °C 160
200
Melting Completion (Liquidus), °C 580
1090
Melting Onset (Solidus), °C 580
1040
Specific Heat Capacity, J/kg-K 900
390
Thermal Conductivity, W/m-K 130
390
Thermal Expansion, µm/m-K 21
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
100
Electrical Conductivity: Equal Weight (Specific), % IACS 120
100

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
33
Density, g/cm3 2.5
9.0
Embodied Carbon, kg CO2/kg material 7.7
2.7
Embodied Energy, MJ/kg 140
42
Embodied Water, L/kg 1050
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.5
29
Resilience: Unit (Modulus of Resilience), kJ/m3 28
76
Stiffness to Weight: Axial, points 16
7.2
Stiffness to Weight: Bending, points 55
18
Strength to Weight: Axial, points 13
6.8
Strength to Weight: Bending, points 21
9.0
Thermal Diffusivity, mm2/s 59
110
Thermal Shock Resistance, points 5.6
7.8

Alloy Composition

Aluminum (Al), % 85.3 to 89
0
Bismuth (Bi), % 0
0 to 0.00050
Copper (Cu), % 0 to 0.3
99.914 to 99.94
Iron (Fe), % 0 to 0.8
0
Magnesium (Mg), % 0 to 0.1
0
Manganese (Mn), % 0 to 0.15
0
Silicon (Si), % 11 to 13
0
Silver (Ag), % 0
0.060 to 0.080
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.15
0