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7108 Aluminum vs. CR005A Copper

7108 aluminum belongs to the aluminum alloys classification, while CR005A copper belongs to the copper 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 7108 aluminum and the bottom bar is CR005A copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
120
Elongation at Break, % 11
15
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 26
43
Tensile Strength: Ultimate (UTS), MPa 350
230
Tensile Strength: Yield (Proof), MPa 290
140

Thermal Properties

Latent Heat of Fusion, J/g 380
210
Maximum Temperature: Mechanical, °C 210
200
Melting Completion (Liquidus), °C 630
1090
Melting Onset (Solidus), °C 530
1040
Specific Heat Capacity, J/kg-K 880
390
Thermal Conductivity, W/m-K 150
380
Thermal Expansion, µm/m-K 24
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 39
100
Electrical Conductivity: Equal Weight (Specific), % IACS 120
100

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
31
Density, g/cm3 2.9
9.0
Embodied Carbon, kg CO2/kg material 8.3
2.6
Embodied Energy, MJ/kg 150
41
Embodied Water, L/kg 1150
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 38
31
Resilience: Unit (Modulus of Resilience), kJ/m3 620
83
Stiffness to Weight: Axial, points 13
7.2
Stiffness to Weight: Bending, points 47
18
Strength to Weight: Axial, points 34
7.1
Strength to Weight: Bending, points 38
9.3
Thermal Diffusivity, mm2/s 59
110
Thermal Shock Resistance, points 16
8.1

Alloy Composition

Aluminum (Al), % 92.4 to 94.7
0
Copper (Cu), % 0 to 0.050
99.9 to 100
Iron (Fe), % 0 to 0.1
0
Magnesium (Mg), % 0.7 to 1.4
0
Manganese (Mn), % 0 to 0.050
0
Oxygen (O), % 0
0 to 0.040
Silicon (Si), % 0 to 0.1
0
Silver (Ag), % 0
0 to 0.015
Titanium (Ti), % 0 to 0.050
0
Zinc (Zn), % 4.5 to 5.5
0
Zirconium (Zr), % 0.12 to 0.25
0
Residuals, % 0 to 0.15
0