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6081 Aluminum vs. C61900 Bronze

6081 aluminum belongs to the aluminum alloys classification, while C61900 bronze 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 6081 aluminum and the bottom bar is C61900 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
110
Elongation at Break, % 9.0
21 to 32
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 26
43
Shear Strength, MPa 180
370 to 410
Tensile Strength: Ultimate (UTS), MPa 310
570 to 650
Tensile Strength: Yield (Proof), MPa 270
230 to 310

Thermal Properties

Latent Heat of Fusion, J/g 410
230
Maximum Temperature: Mechanical, °C 160
220
Melting Completion (Liquidus), °C 640
1050
Melting Onset (Solidus), °C 610
1040
Specific Heat Capacity, J/kg-K 900
440
Thermal Conductivity, W/m-K 180
79
Thermal Expansion, µm/m-K 23
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 47
11
Electrical Conductivity: Equal Weight (Specific), % IACS 160
11

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
28
Density, g/cm3 2.7
8.3
Embodied Carbon, kg CO2/kg material 8.3
3.1
Embodied Energy, MJ/kg 150
51
Embodied Water, L/kg 1180
380

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 27
110 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 540
230 to 430
Stiffness to Weight: Axial, points 14
7.6
Stiffness to Weight: Bending, points 50
19
Strength to Weight: Axial, points 32
19 to 22
Strength to Weight: Bending, points 37
18 to 20
Thermal Diffusivity, mm2/s 74
22
Thermal Shock Resistance, points 14
20 to 23

Alloy Composition

Aluminum (Al), % 96.3 to 98.6
8.5 to 10
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 0 to 0.1
83.6 to 88.5
Iron (Fe), % 0 to 0.5
3.0 to 4.5
Lead (Pb), % 0
0 to 0.020
Magnesium (Mg), % 0.6 to 1.0
0
Manganese (Mn), % 0.1 to 0.45
0
Silicon (Si), % 0.7 to 1.1
0
Tin (Sn), % 0
0 to 0.6
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.2
0 to 0.8
Residuals, % 0
0 to 0.5