Thermal Expansion of Common Titanium Alloys
The following table provides a curated list of linear thermal expansion coefficients for various titanium alloys, taken at room temperature (approximately 20°C or 68°F) and 1 atmospheric (atm) pressure. (1 atm = 101,325 Pa)
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| UNS number | Composition | ||
|---|---|---|---|
| Grade 1 | R50250 | 8.6 | |
| Grade 2 | R50400 | 8.6 | |
| Grade 3 | R50550 | 8.6 | |
| Grade 4 | R50700 | 8.6 | |
| Grade 5 | R56400 | Ti-6Al-4V | 8.6 |
| Grade 6 | R54520 | Ti-5Al-2.5Sn | 9.4 |
| Grade 7 | R52400 | Ti-0.2Pd | 8.6 |
| Grade 9 | R56320 | Ti-3Al-2.5V | 9.61 |
| Grade 10 | R58030 | Ti-11.5Mo-6Zr-4.5Sn | 7.6 |
| Grade 11 | R52250 | Ti-0.2Pd | 8.6 |
| Grade 12 | R53400 | Ti-0.3Mo-0.8Ni | 8.6 |
| Grade 16 | R52402 | Ti-0.06Pd | 8.6 |
| Grade 17 | R52252 | Ti-0.06Pd | 8.6 |
| Grade 19 | R58153 | Ti-8V-6Cr-4Mo-4Zr-3Al | 8.3 |
| Grade 21 | R58210 | Ti-15Mo-3Al-2.7Nb-0.25Si | 7.07 |
| Grade 23 | R56401 | Ti-6Al-4V (ELI) | 8.6 |
| Grade 30 | R53530 | 8.7 | |
| Grade 31 | R53532 | 8.7 | |
| Grade 32 | R55111 | Ti-5Al-1Sn-1Zr-1V-0.8Mo | 8.2 |
| Grade 33 | R53442 | 8.7 | |
| Grade 35 | R56340 | 9.3 | |
| Grade 36 | R58450 | Ti-45Nb | 9.03 |
| Grade 37 | R52815 | 8.9 | |
| Grade 38 | R54250 | 9.3 | |
| Timetal® 10-2-3 | R56410 | Ti-10V-2Fe-3Al | 9.7 |
| Timetal® 21S | R58210 | Ti-15Mo-3Nb-3Al-0.2Si | 7.07 |
| Timetal® 6-2-4-2 | R54620 | Ti-6Al-2Sn-4Z r-2Mo | 9.9 |
| Timetal® 6-6-2 | R56620 | Ti-6Al-6V-2Sn | 9 |
| Timetal® 230 | Ti-2.5Cu | 9 |
The thermal expansion values in this table are approximate and can vary depending on the specific composition and processing of each alloy.
Related Tables
References: 1) Cardarelli, François. Materials Handbook: A Concise Desktop Reference. Switzerland: Springer International Publishing, 2018.