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Grade 20 Titanium vs. 7020 Aluminum

Grade 20 titanium belongs to the titanium alloys classification, while 7020 aluminum belongs to the aluminum alloys. There are 25 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is grade 20 titanium and the bottom bar is 7020 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
70
Elongation at Break, % 5.7 to 17
8.4 to 14
Fatigue Strength, MPa 550 to 630
110 to 130
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 47
26
Shear Strength, MPa 560 to 740
110 to 230
Tensile Strength: Ultimate (UTS), MPa 900 to 1270
190 to 390
Tensile Strength: Yield (Proof), MPa 850 to 1190
120 to 310

Thermal Properties

Latent Heat of Fusion, J/g 400
380
Maximum Temperature: Mechanical, °C 370
210
Melting Completion (Liquidus), °C 1660
650
Melting Onset (Solidus), °C 1600
610
Specific Heat Capacity, J/kg-K 520
880
Thermal Expansion, µm/m-K 9.6
23

Otherwise Unclassified Properties

Density, g/cm3 5.0
2.9
Embodied Carbon, kg CO2/kg material 52
8.3
Embodied Energy, MJ/kg 860
150
Embodied Water, L/kg 350
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 71 to 150
23 to 46
Resilience: Unit (Modulus of Resilience), kJ/m3 2940 to 5760
110 to 690
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 33
47
Strength to Weight: Axial, points 50 to 70
18 to 37
Strength to Weight: Bending, points 41 to 52
25 to 41
Thermal Shock Resistance, points 55 to 77
8.3 to 17

Alloy Composition

Aluminum (Al), % 3.0 to 4.0
91.2 to 94.8
Carbon (C), % 0 to 0.050
0
Chromium (Cr), % 5.5 to 6.5
0.1 to 0.35
Copper (Cu), % 0
0 to 0.2
Hydrogen (H), % 0 to 0.020
0
Iron (Fe), % 0 to 0.3
0 to 0.4
Magnesium (Mg), % 0
1.0 to 1.4
Manganese (Mn), % 0
0.050 to 0.5
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 0.35
Titanium (Ti), % 71 to 77
0 to 0.25
Vanadium (V), % 7.5 to 8.5
0
Zinc (Zn), % 0
4.0 to 5.0
Zirconium (Zr), % 3.5 to 4.5
0.080 to 0.25
Residuals, % 0
0 to 0.15

Comparable Variants