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Grade 20 Titanium vs. 2014 Aluminum

Grade 20 titanium belongs to the titanium alloys classification, while 2014 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 2014 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
72
Elongation at Break, % 5.7 to 17
1.5 to 16
Fatigue Strength, MPa 550 to 630
90 to 160
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 47
27
Shear Strength, MPa 560 to 740
130 to 290
Tensile Strength: Ultimate (UTS), MPa 900 to 1270
190 to 500
Tensile Strength: Yield (Proof), MPa 850 to 1190
100 to 440

Thermal Properties

Latent Heat of Fusion, J/g 400
400
Maximum Temperature: Mechanical, °C 370
210
Melting Completion (Liquidus), °C 1660
630
Melting Onset (Solidus), °C 1600
510
Specific Heat Capacity, J/kg-K 520
870
Thermal Expansion, µm/m-K 9.6
23

Otherwise Unclassified Properties

Density, g/cm3 5.0
3.0
Embodied Carbon, kg CO2/kg material 52
8.1
Embodied Energy, MJ/kg 860
150
Embodied Water, L/kg 350
1130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 71 to 150
6.6 to 56
Resilience: Unit (Modulus of Resilience), kJ/m3 2940 to 5760
76 to 1330
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 33
46
Strength to Weight: Axial, points 50 to 70
18 to 46
Strength to Weight: Bending, points 41 to 52
25 to 46
Thermal Shock Resistance, points 55 to 77
8.4 to 22

Alloy Composition

Aluminum (Al), % 3.0 to 4.0
90.4 to 95
Carbon (C), % 0 to 0.050
0
Chromium (Cr), % 5.5 to 6.5
0 to 0.1
Copper (Cu), % 0
3.9 to 5.0
Hydrogen (H), % 0 to 0.020
0
Iron (Fe), % 0 to 0.3
0 to 0.7
Magnesium (Mg), % 0
0.2 to 0.8
Manganese (Mn), % 0
0.4 to 1.2
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
0.5 to 1.2
Titanium (Ti), % 71 to 77
0 to 0.15
Vanadium (V), % 7.5 to 8.5
0
Zinc (Zn), % 0
0 to 0.25
Zirconium (Zr), % 3.5 to 4.5
0 to 0.2
Residuals, % 0
0 to 0.15

Comparable Variants