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Grade 20 Titanium vs. 3303 Aluminum

Grade 20 titanium belongs to the titanium alloys classification, while 3303 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 3303 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
70
Elongation at Break, % 5.7 to 17
23
Fatigue Strength, MPa 550 to 630
43
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 47
26
Shear Strength, MPa 560 to 740
69
Tensile Strength: Ultimate (UTS), MPa 900 to 1270
110
Tensile Strength: Yield (Proof), MPa 850 to 1190
39

Thermal Properties

Latent Heat of Fusion, J/g 400
400
Maximum Temperature: Mechanical, °C 370
180
Melting Completion (Liquidus), °C 1660
650
Melting Onset (Solidus), °C 1600
620
Specific Heat Capacity, J/kg-K 520
900
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
8.1
Embodied Energy, MJ/kg 860
150
Embodied Water, L/kg 350
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 71 to 150
20
Resilience: Unit (Modulus of Resilience), kJ/m3 2940 to 5760
11
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 33
49
Strength to Weight: Axial, points 50 to 70
11
Strength to Weight: Bending, points 41 to 52
18
Thermal Shock Resistance, points 55 to 77
4.8

Alloy Composition

Aluminum (Al), % 3.0 to 4.0
96.6 to 99
Carbon (C), % 0 to 0.050
0
Chromium (Cr), % 5.5 to 6.5
0
Copper (Cu), % 0
0.050 to 0.2
Hydrogen (H), % 0 to 0.020
0
Iron (Fe), % 0 to 0.3
0 to 0.7
Manganese (Mn), % 0
1.0 to 1.5
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 to 0.6
Titanium (Ti), % 71 to 77
0
Vanadium (V), % 7.5 to 8.5
0
Zinc (Zn), % 0
0 to 0.3
Zirconium (Zr), % 3.5 to 4.5
0
Residuals, % 0
0 to 0.15