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Grade 20 Titanium vs. 6066 Aluminum

Grade 20 titanium belongs to the titanium alloys classification, while 6066 aluminum belongs to the aluminum alloys. There are 25 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is grade 20 titanium and the bottom bar is 6066 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
70
Elongation at Break, % 5.7 to 17
7.8 to 17
Fatigue Strength, MPa 550 to 630
94 to 130
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 47
26
Shear Strength, MPa 560 to 740
95 to 240
Tensile Strength: Ultimate (UTS), MPa 900 to 1270
160 to 400
Tensile Strength: Yield (Proof), MPa 850 to 1190
93 to 360

Thermal Properties

Latent Heat of Fusion, J/g 400
410
Maximum Temperature: Mechanical, °C 370
170
Melting Completion (Liquidus), °C 1660
650
Melting Onset (Solidus), °C 1600
560
Specific Heat Capacity, J/kg-K 520
890
Thermal Expansion, µm/m-K 9.6
23

Otherwise Unclassified Properties

Density, g/cm3 5.0
2.8
Embodied Carbon, kg CO2/kg material 52
8.3
Embodied Energy, MJ/kg 860
150
Embodied Water, L/kg 350
1160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 71 to 150
23 to 52
Resilience: Unit (Modulus of Resilience), kJ/m3 2940 to 5760
61 to 920
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 33
49
Strength to Weight: Axial, points 50 to 70
16 to 39
Strength to Weight: Bending, points 41 to 52
23 to 43
Thermal Shock Resistance, points 55 to 77
6.9 to 17

Alloy Composition

Aluminum (Al), % 3.0 to 4.0
93 to 97
Carbon (C), % 0 to 0.050
0
Chromium (Cr), % 5.5 to 6.5
0 to 0.4
Copper (Cu), % 0
0.7 to 1.2
Hydrogen (H), % 0 to 0.020
0
Iron (Fe), % 0 to 0.3
0 to 0.5
Magnesium (Mg), % 0
0.8 to 1.4
Manganese (Mn), % 0
0.6 to 1.1
Molybdenum (Mo), % 3.5 to 4.5
0
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.12
0
Palladium (Pd), % 0.040 to 0.080
0
Silicon (Si), % 0
0.9 to 1.8
Titanium (Ti), % 71 to 77
0 to 0.2
Vanadium (V), % 7.5 to 8.5
0
Zinc (Zn), % 0
0 to 0.25
Zirconium (Zr), % 3.5 to 4.5
0
Residuals, % 0
0 to 0.15

Comparable Variants