Grade 20 Titanium vs. ASTM B540 Palladium
Grade 20 titanium belongs to the titanium alloys classification, while ASTM B540 palladium belongs to the otherwise unclassified metals. There are 21 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.
For each property being compared, the top bar is grade 20 titanium and the bottom bar is ASTM B540 palladium.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 120 | |
| 110 |
| Elongation at Break, % | 5.7 to 17 | |
| 1.1 to 14 |
| Fatigue Strength, MPa | 550 to 630 | |
| 350 |
| Poisson's Ratio | 0.32 | |
| 0.38 |
| Shear Modulus, GPa | 47 | |
| 39 |
| Shear Strength, MPa | 560 to 740 | |
| 500 to 700 |
| Tensile Strength: Ultimate (UTS), MPa | 900 to 1270 | |
| 830 to 1240 |
| Tensile Strength: Yield (Proof), MPa | 850 to 1190 | |
| 620 to 1000 |
Thermal Properties
| Latent Heat of Fusion, J/g | 400 | |
| 140 |
| Melting Completion (Liquidus), °C | 1660 | |
| 1220 |
| Melting Onset (Solidus), °C | 1600 | |
| 1020 |
| Specific Heat Capacity, J/kg-K | 520 | |
| 240 |
| Thermal Expansion, µm/m-K | 9.6 | |
| 14 |
Otherwise Unclassified Properties
| Density, g/cm3 | 5.0 | |
| 13 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 71 to 150 | |
| 13 to 100 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 2940 to 5760 | |
| 1790 to 4660 |
| Stiffness to Weight: Axial, points | 14 | |
| 4.7 |
| Stiffness to Weight: Bending, points | 33 | |
| 12 |
| Strength to Weight: Axial, points | 50 to 70 | |
| 18 to 27 |
| Strength to Weight: Bending, points | 41 to 52 | |
| 15 to 20 |
| Thermal Shock Resistance, points | 55 to 77 | |
| 41 to 61 |
Alloy Composition
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| Aluminum (Al), % | 3.0 to 4.0 | |
| 0 |
| Carbon (C), % | 0 to 0.050 | |
| 0 |
| Chromium (Cr), % | 5.5 to 6.5 | |
| 0 |
| Copper (Cu), % | 0 | |
| 13.5 to 14.5 |
| Gold (Au), % | 0 | |
| 9.5 to 10.5 |
| Hydrogen (H), % | 0 to 0.020 | |
| 0 |
| Iron (Fe), % | 0 to 0.3 | |
| 0 |
| 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 | |
| 34 to 36 |
| Platinum (Pt), % | 0 | |
| 9.5 to 10.5 |
| Silver (Ag), % | 0 | |
| 29 to 31 |
| Titanium (Ti), % | 71 to 77 | |
| 0 |
| Vanadium (V), % | 7.5 to 8.5 | |
| 0 |
| Zinc (Zn), % | 0 | |
| 0.8 to 1.2 |
| Zirconium (Zr), % | 3.5 to 4.5 | |
| 0 |
| Residuals, % | 0 to 0.4 | |
| 0 to 0.3 |