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Grade 20 Titanium vs. 6065 Aluminum

Grade 20 titanium belongs to the titanium alloys classification, while 6065 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 6065 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
68
Elongation at Break, % 5.7 to 17
4.5 to 11
Fatigue Strength, MPa 550 to 630
96 to 110
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 47
26
Shear Strength, MPa 560 to 740
190 to 230
Tensile Strength: Ultimate (UTS), MPa 900 to 1270
310 to 400
Tensile Strength: Yield (Proof), MPa 850 to 1190
270 to 380

Thermal Properties

Latent Heat of Fusion, J/g 400
400
Maximum Temperature: Mechanical, °C 370
180
Melting Completion (Liquidus), °C 1660
640
Melting Onset (Solidus), °C 1600
590
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
8.4
Embodied Energy, MJ/kg 860
150
Embodied Water, L/kg 350
1200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 71 to 150
17 to 34
Resilience: Unit (Modulus of Resilience), kJ/m3 2940 to 5760
540 to 1040
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 33
49
Strength to Weight: Axial, points 50 to 70
31 to 40
Strength to Weight: Bending, points 41 to 52
36 to 43
Thermal Shock Resistance, points 55 to 77
14 to 18

Alloy Composition

Aluminum (Al), % 3.0 to 4.0
94.4 to 98.2
Bismuth (Bi), % 0
0.5 to 1.5
Carbon (C), % 0 to 0.050
0
Chromium (Cr), % 5.5 to 6.5
0 to 0.15
Copper (Cu), % 0
0.15 to 0.4
Hydrogen (H), % 0 to 0.020
0
Iron (Fe), % 0 to 0.3
0 to 0.7
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 0
0.8 to 1.2
Manganese (Mn), % 0
0 to 0.15
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
0.4 to 0.8
Titanium (Ti), % 71 to 77
0 to 0.1
Vanadium (V), % 7.5 to 8.5
0
Zinc (Zn), % 0
0 to 0.25
Zirconium (Zr), % 3.5 to 4.5
0 to 0.15
Residuals, % 0
0 to 0.15

Comparable Variants