Coefficients of friction for different sliding contact surface combinations (guideline values)
| Sliding contact surface | Coefficient of friction | |
| combination | μ | |
| min | max | |
| Steel/steel | 0,08 | 0,20 |
| Steel/bronze | 0,10 | 0,25 |
| Steel/PTFE sintered bronze | 0,05 | 0,25 |
| Steel/PTFE fabric | 0,02 | 0,15 |
| Steel/PTFE FRP | 0,05 | 0,20 |
