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6066 Aluminum vs. Grade 20 Titanium

6066 aluminum belongs to the aluminum alloys classification, while grade 20 titanium belongs to the titanium 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 6066 aluminum and the bottom bar is grade 20 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition

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

Comparable Variants