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Grade 20 Titanium vs. 2030 Aluminum

Grade 20 titanium belongs to the titanium alloys classification, while 2030 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 2030 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
70
Elongation at Break, % 5.7 to 17
5.6 to 8.0
Fatigue Strength, MPa 550 to 630
91 to 110
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 47
26
Shear Strength, MPa 560 to 740
220 to 250
Tensile Strength: Ultimate (UTS), MPa 900 to 1270
370 to 420
Tensile Strength: Yield (Proof), MPa 850 to 1190
240 to 270

Thermal Properties

Latent Heat of Fusion, J/g 400
390
Maximum Temperature: Mechanical, °C 370
190
Melting Completion (Liquidus), °C 1660
640
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
3.1
Embodied Carbon, kg CO2/kg material 52
8.0
Embodied Energy, MJ/kg 860
150
Embodied Water, L/kg 350
1140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 71 to 150
21 to 26
Resilience: Unit (Modulus of Resilience), kJ/m3 2940 to 5760
390 to 530
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 33
45
Strength to Weight: Axial, points 50 to 70
33 to 38
Strength to Weight: Bending, points 41 to 52
37 to 40
Thermal Shock Resistance, points 55 to 77
16 to 19

Alloy Composition

Aluminum (Al), % 3.0 to 4.0
88.9 to 95.2
Bismuth (Bi), % 0
0 to 0.2
Carbon (C), % 0 to 0.050
0
Chromium (Cr), % 5.5 to 6.5
0 to 0.1
Copper (Cu), % 0
3.3 to 4.5
Hydrogen (H), % 0 to 0.020
0
Iron (Fe), % 0 to 0.3
0 to 0.7
Lead (Pb), % 0
0.8 to 1.5
Magnesium (Mg), % 0
0.5 to 1.3
Manganese (Mn), % 0
0.2 to 1.0
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 0.8
Titanium (Ti), % 71 to 77
0 to 0.2
Vanadium (V), % 7.5 to 8.5
0
Zinc (Zn), % 0
0 to 0.5
Zirconium (Zr), % 3.5 to 4.5
0
Residuals, % 0
0 to 0.3

Comparable Variants