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Grade 20 Titanium vs. AWS ERTi-2

Both grade 20 titanium and AWS ERTi-2 are titanium alloys. They have 74% of their average alloy composition in common. There are 24 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 AWS ERTi-2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
110
Elongation at Break, % 5.7 to 17
20
Fatigue Strength, MPa 550 to 630
190
Poisson's Ratio 0.32
0.32
Shear Modulus, GPa 47
40
Tensile Strength: Ultimate (UTS), MPa 900 to 1270
340
Tensile Strength: Yield (Proof), MPa 850 to 1190
280

Thermal Properties

Latent Heat of Fusion, J/g 400
420
Maximum Temperature: Mechanical, °C 370
320
Melting Completion (Liquidus), °C 1660
1670
Melting Onset (Solidus), °C 1600
1620
Specific Heat Capacity, J/kg-K 520
540
Thermal Expansion, µm/m-K 9.6
8.7

Otherwise Unclassified Properties

Density, g/cm3 5.0
4.5
Embodied Carbon, kg CO2/kg material 52
31
Embodied Energy, MJ/kg 860
510
Embodied Water, L/kg 350
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 71 to 150
64
Resilience: Unit (Modulus of Resilience), kJ/m3 2940 to 5760
360
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 33
35
Strength to Weight: Axial, points 50 to 70
21
Strength to Weight: Bending, points 41 to 52
24
Thermal Shock Resistance, points 55 to 77
27

Alloy Composition


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Aluminum (Al), % 3.0 to 4.0
0
Carbon (C), % 0 to 0.050
0 to 0.030
Chromium (Cr), % 5.5 to 6.5
0
Hydrogen (H), % 0 to 0.020
0 to 0.0080
Iron (Fe), % 0 to 0.3
0 to 0.12
Molybdenum (Mo), % 3.5 to 4.5
0
Nitrogen (N), % 0 to 0.030
0 to 0.015
Oxygen (O), % 0 to 0.12
0.080 to 0.16
Palladium (Pd), % 0.040 to 0.080
0
Titanium (Ti), % 71 to 77
99.667 to 99.92
Vanadium (V), % 7.5 to 8.5
0
Zirconium (Zr), % 3.5 to 4.5
0
Residuals, % 0 to 0.4
0