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6081 Aluminum vs. Grade 11 Titanium

6081 aluminum belongs to the aluminum alloys classification, while grade 11 titanium belongs to the titanium alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is 6081 aluminum and the bottom bar is grade 11 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
110
Elongation at Break, % 9.0
29
Fatigue Strength, MPa 110
170
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 26
38
Shear Strength, MPa 180
200
Tensile Strength: Ultimate (UTS), MPa 310
310
Tensile Strength: Yield (Proof), MPa 270
230

Thermal Properties

Latent Heat of Fusion, J/g 410
420
Maximum Temperature: Mechanical, °C 160
320
Melting Completion (Liquidus), °C 640
1660
Melting Onset (Solidus), °C 610
1610
Specific Heat Capacity, J/kg-K 900
540
Thermal Conductivity, W/m-K 180
22
Thermal Expansion, µm/m-K 23
9.2

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 47
3.7
Electrical Conductivity: Equal Weight (Specific), % IACS 160
7.3

Otherwise Unclassified Properties

Density, g/cm3 2.7
4.5
Embodied Carbon, kg CO2/kg material 8.3
47
Embodied Energy, MJ/kg 150
800
Embodied Water, L/kg 1180
470

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 27
81
Resilience: Unit (Modulus of Resilience), kJ/m3 540
240
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
35
Strength to Weight: Axial, points 32
19
Strength to Weight: Bending, points 37
22
Thermal Diffusivity, mm2/s 74
8.9
Thermal Shock Resistance, points 14
22

Alloy Composition

Aluminum (Al), % 96.3 to 98.6
0
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 0 to 0.1
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 0.5
0 to 0.2
Magnesium (Mg), % 0.6 to 1.0
0
Manganese (Mn), % 0.1 to 0.45
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.18
Palladium (Pd), % 0
0.12 to 0.25
Silicon (Si), % 0.7 to 1.1
0
Titanium (Ti), % 0 to 0.15
98.8 to 99.88
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0
0 to 0.4