Grade 5 Titanium vs. PFA
Grade 5 titanium and PFA belong to fundamentally different material chemistries. Grade 5 titanium is a metal, while PFA is a polymeric material. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 11 material properties with values for both materials. Properties with values for just one material (31, in this case) are not shown.
For each property being compared, the top bar is grade 5 titanium and the bottom bar is PFA.
Metric UnitsUS Customary Units
Mechanical Properties
| Elongation at Break, % | 8.6 to 11 | |
| 300 |
| Tensile Strength: Ultimate (UTS), MPa | 1000 to 1190 | |
| 30 |
Thermal Properties
| Maximum Temperature: Mechanical, °C | 330 | |
| 260 |
| Melting Onset (Solidus), °C | 1650 | |
| 300 |
| Specific Heat Capacity, J/kg-K | 560 | |
| 1000 |
| Thermal Conductivity, W/m-K | 6.8 | |
| 0.25 |
| Thermal Expansion, µm/m-K | 8.9 | |
| 120 |
Otherwise Unclassified Properties
| Density, g/cm3 | 4.4 | |
| 2.2 |
Common Calculations
| Strength to Weight: Axial, points | 62 to 75 | |
| 3.9 |
| Strength to Weight: Bending, points | 50 to 56 | |
| 10 |
| Thermal Diffusivity, mm2/s | 2.7 | |
| 0.12 |