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Grade 20 Titanium vs. 5086 Aluminum

Grade 20 titanium belongs to the titanium alloys classification, while 5086 aluminum belongs to the aluminum alloys. There are 25 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is grade 20 titanium and the bottom bar is 5086 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
68
Elongation at Break, % 5.7 to 17
1.7 to 20
Fatigue Strength, MPa 550 to 630
88 to 180
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 47
26
Shear Strength, MPa 560 to 740
160 to 230
Tensile Strength: Ultimate (UTS), MPa 900 to 1270
270 to 390
Tensile Strength: Yield (Proof), MPa 850 to 1190
110 to 320

Thermal Properties

Latent Heat of Fusion, J/g 400
400
Maximum Temperature: Mechanical, °C 370
190
Melting Completion (Liquidus), °C 1660
640
Melting Onset (Solidus), °C 1600
590
Specific Heat Capacity, J/kg-K 520
900
Thermal Expansion, µm/m-K 9.6
24

Otherwise Unclassified Properties

Density, g/cm3 5.0
2.7
Embodied Carbon, kg CO2/kg material 52
8.8
Embodied Energy, MJ/kg 860
150
Embodied Water, L/kg 350
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 71 to 150
5.8 to 42
Resilience: Unit (Modulus of Resilience), kJ/m3 2940 to 5760
86 to 770
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 33
50
Strength to Weight: Axial, points 50 to 70
28 to 40
Strength to Weight: Bending, points 41 to 52
34 to 44
Thermal Shock Resistance, points 55 to 77
12 to 17

Alloy Composition

Aluminum (Al), % 3.0 to 4.0
93 to 96.3
Carbon (C), % 0 to 0.050
0
Chromium (Cr), % 5.5 to 6.5
0.050 to 0.25
Copper (Cu), % 0
0 to 0.1
Hydrogen (H), % 0 to 0.020
0
Iron (Fe), % 0 to 0.3
0 to 0.5
Magnesium (Mg), % 0
3.5 to 4.5
Manganese (Mn), % 0
0.2 to 0.7
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 0.4
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
Residuals, % 0
0 to 0.15

Comparable Variants