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6081 Aluminum vs. C63800 Bronze

6081 aluminum belongs to the aluminum alloys classification, while C63800 bronze belongs to the copper alloys. There are 26 material properties with values for both materials. Properties with values for just one material (6, 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 6081 aluminum and the bottom bar is C63800 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
110
Elongation at Break, % 9.0
7.9 to 41
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 26
43
Shear Strength, MPa 180
320 to 500
Tensile Strength: Ultimate (UTS), MPa 310
460 to 1010

Thermal Properties

Latent Heat of Fusion, J/g 410
240
Maximum Temperature: Mechanical, °C 160
200
Melting Completion (Liquidus), °C 640
1030
Melting Onset (Solidus), °C 610
1000
Specific Heat Capacity, J/kg-K 900
410
Thermal Conductivity, W/m-K 180
40
Thermal Expansion, µm/m-K 23
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 47
10
Electrical Conductivity: Equal Weight (Specific), % IACS 160
10

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
30
Density, g/cm3 2.7
8.6
Embodied Carbon, kg CO2/kg material 8.3
2.8
Embodied Energy, MJ/kg 150
45
Embodied Water, L/kg 1180
330

Common Calculations

Stiffness to Weight: Axial, points 14
7.4
Stiffness to Weight: Bending, points 50
19
Strength to Weight: Axial, points 32
15 to 33
Strength to Weight: Bending, points 37
15 to 26
Thermal Diffusivity, mm2/s 74
11
Thermal Shock Resistance, points 14
17 to 36

Alloy Composition

Aluminum (Al), % 96.3 to 98.6
2.5 to 3.1
Chromium (Cr), % 0 to 0.1
0
Cobalt (Co), % 0
0.25 to 0.55
Copper (Cu), % 0 to 0.1
92.4 to 95.8
Iron (Fe), % 0 to 0.5
0 to 0.2
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 0.6 to 1.0
0
Manganese (Mn), % 0.1 to 0.45
0 to 0.1
Nickel (Ni), % 0
0 to 0.2
Silicon (Si), % 0.7 to 1.1
1.5 to 2.1
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.2
0 to 0.8
Residuals, % 0
0 to 0.5