Wear factor (K) is an indication of a materials resistance to wear as a function of the volume of material lost, force (load) and velocity at the wear interface and time. It is often determined using a “thrust washer” wear testing apparatus per ASTM D3702 in which a molded plastic specimen is rotated against a substrate thrust washer under set pressure and velocity conditions.
A wear factor is calculated with the equation W=K*F*V*T. In this equation W is wear volume (mm3), K is wear factor (mm3/N m)10-8, F is force (N), V is velocity (m/sec), and T is elapsed time (sec).
A material with a lower wear factor (K) has greater resistance to wear and these values are useful for material comparison purposes.
[ View wear data in english units | Return to wear data resin system list ]
Plastic vs Plastic
| Test Conditions
PV 35 Load 0.90 Speed 0.25 |
|||||
|---|---|---|---|---|---|
| Rotating Sample | vs | Stationary Sample | µ Dynamic |
||
| RTP Product | Wear
Factor |
RTP Product | Wear
Factor |
||
|
POM Unfilled |
26 | vs |
PA 6/6 Unfilled |
265 | 0.24 |
|
POM Unfilled |
122 | vs |
PA 6/6 30% Glass Fiber |
459 | 0.22 |
|
POM Unfilled |
122 | vs |
PA 6/6 30% Glass Fiber 15% PTFE |
213 | 0.25 |
|
POM Unfilled |
26 | vs |
PC Unfilled |
82 | 0.47 |
|
POM 20% PTFE |
8 | vs |
PA 6/6 Unfilled |
22 | 0.10 |
|
POM 20% PTFE |
81 | vs |
PA 6/6 30% Glass Fiber |
300 | 0.24 |
|
POM 20% PTFE |
137 | vs |
PA 6/6 30% Glass Fiber 15% PTFE |
237 | 0.20 |
|
POM 20% PTFE |
12 | vs |
PA 6/6 30% Carbon Fiber 15% PTFE |
27 | 0.23 |
|
POM 20% PTFE |
97 | vs |
PC Unfilled |
199 | 0.42 |
|
POM 20% PTFE |
52 | vs |
PA 6/6 30% Glass Fiber 15% PTFE |
127 | 0.27 |
|
POM 20% PTFE |
89 | vs | 177 | 0.42 | |
|
POM 20% PTFE |
16 | vs |
| ||