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Grade 27 Titanium vs. 6066 Aluminum

Grade 27 titanium belongs to the titanium alloys classification, while 6066 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is grade 27 titanium and the bottom bar is 6066 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
70
Elongation at Break, % 27
7.8 to 17
Fatigue Strength, MPa 170
94 to 130
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 41
26
Shear Strength, MPa 180
95 to 240
Tensile Strength: Ultimate (UTS), MPa 270
160 to 400
Tensile Strength: Yield (Proof), MPa 230
93 to 360

Thermal Properties

Latent Heat of Fusion, J/g 420
410
Maximum Temperature: Mechanical, °C 320
170
Melting Completion (Liquidus), °C 1660
650
Melting Onset (Solidus), °C 1610
560
Specific Heat Capacity, J/kg-K 540
890
Thermal Conductivity, W/m-K 21
150
Thermal Expansion, µm/m-K 8.7
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
40
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
130

Otherwise Unclassified Properties

Base Metal Price, % relative 37
9.5
Density, g/cm3 4.5
2.8
Embodied Carbon, kg CO2/kg material 33
8.3
Embodied Energy, MJ/kg 530
150
Embodied Water, L/kg 320
1160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 70
23 to 52
Resilience: Unit (Modulus of Resilience), kJ/m3 240
61 to 920
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
49
Strength to Weight: Axial, points 17
16 to 39
Strength to Weight: Bending, points 21
23 to 43
Thermal Diffusivity, mm2/s 8.8
61
Thermal Shock Resistance, points 21
6.9 to 17

Alloy Composition

Aluminum (Al), % 0
93 to 97
Carbon (C), % 0 to 0.080
0
Chromium (Cr), % 0
0 to 0.4
Copper (Cu), % 0
0.7 to 1.2
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
0 to 0.5
Magnesium (Mg), % 0
0.8 to 1.4
Manganese (Mn), % 0
0.6 to 1.1
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.18
0
Ruthenium (Ru), % 0.080 to 0.14
0
Silicon (Si), % 0
0.9 to 1.8
Titanium (Ti), % 99 to 99.92
0 to 0.2
Zinc (Zn), % 0
0 to 0.25
Residuals, % 0
0 to 0.15