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Grade 20 Titanium vs. Grade 6 Titanium

Both grade 20 titanium and grade 6 titanium are titanium alloys. They have 78% 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 6 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
100
Elongation at Break, % 5.7 to 17
11
Fatigue Strength, MPa 550 to 630
290
Poisson's Ratio 0.32
0.32
Reduction in Area, % 23
27
Shear Modulus, GPa 47
39
Shear Strength, MPa 560 to 740
530
Tensile Strength: Ultimate (UTS), MPa 900 to 1270
890
Tensile Strength: Yield (Proof), MPa 850 to 1190
840

Thermal Properties

Latent Heat of Fusion, J/g 400
410
Maximum Temperature: Mechanical, °C 370
310
Melting Completion (Liquidus), °C 1660
1580
Melting Onset (Solidus), °C 1600
1530
Specific Heat Capacity, J/kg-K 520
550
Thermal Expansion, µm/m-K 9.6
9.4

Otherwise Unclassified Properties

Density, g/cm3 5.0
4.5
Embodied Carbon, kg CO2/kg material 52
30
Embodied Energy, MJ/kg 860
480
Embodied Water, L/kg 350
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 71 to 150
92
Resilience: Unit (Modulus of Resilience), kJ/m3 2940 to 5760
3390
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 33
35
Strength to Weight: Axial, points 50 to 70
55
Strength to Weight: Bending, points 41 to 52
46
Thermal Shock Resistance, points 55 to 77
65

Alloy Composition


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Aluminum (Al), % 3.0 to 4.0
4.0 to 6.0
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 0.5
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 0.2
Palladium (Pd), % 0.040 to 0.080
0
Tin (Sn), % 0
2.0 to 3.0
Titanium (Ti), % 71 to 77
89.8 to 94
Vanadium (V), % 7.5 to 8.5
0
Zirconium (Zr), % 3.5 to 4.5
0
Residuals, % 0 to 0.4
0 to 0.4