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Grade 20 Titanium vs. Grade 9 Titanium

Both grade 20 titanium and grade 9 titanium are titanium alloys. They have 80% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is grade 20 titanium and the bottom bar is grade 9 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
110
Elongation at Break, % 5.7 to 17
11 to 17
Fatigue Strength, MPa 550 to 630
330 to 480
Poisson's Ratio 0.32
0.32
Reduction in Area, % 23
28
Shear Modulus, GPa 47
40
Shear Strength, MPa 560 to 740
430 to 580
Tensile Strength: Ultimate (UTS), MPa 900 to 1270
700 to 960
Tensile Strength: Yield (Proof), MPa 850 to 1190
540 to 830

Thermal Properties

Latent Heat of Fusion, J/g 400
410
Maximum Temperature: Mechanical, °C 370
330
Melting Completion (Liquidus), °C 1660
1640
Melting Onset (Solidus), °C 1600
1590
Specific Heat Capacity, J/kg-K 520
550
Thermal Expansion, µm/m-K 9.6
9.1

Otherwise Unclassified Properties

Density, g/cm3 5.0
4.5
Embodied Carbon, kg CO2/kg material 52
36
Embodied Energy, MJ/kg 860
580
Embodied Water, L/kg 350
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 71 to 150
89 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 2940 to 5760
1380 to 3220
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 33
35
Strength to Weight: Axial, points 50 to 70
43 to 60
Strength to Weight: Bending, points 41 to 52
39 to 48
Thermal Shock Resistance, points 55 to 77
52 to 71

Alloy Composition


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Aluminum (Al), % 3.0 to 4.0
2.5 to 3.5
Carbon (C), % 0 to 0.050
0 to 0.080
Chromium (Cr), % 5.5 to 6.5
0
Hydrogen (H), % 0 to 0.020
0 to 0.015
Iron (Fe), % 0 to 0.3
0 to 0.25
Molybdenum (Mo), % 3.5 to 4.5
0
Nitrogen (N), % 0 to 0.030
0 to 0.030
Oxygen (O), % 0 to 0.12
0 to 0.15
Palladium (Pd), % 0.040 to 0.080
0
Titanium (Ti), % 71 to 77
92.6 to 95.5
Vanadium (V), % 7.5 to 8.5
2.0 to 3.0
Zirconium (Zr), % 3.5 to 4.5
0
Residuals, % 0 to 0.4
0 to 0.4

Comparable Variants