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 (in3), K is wear factor (in3 min/ft lb hr)10-10, F is force (lb), V is velocity (ft/min), and T is elapsed time (hr).
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 metric units | Return to wear data resin system list ]
Plastic vs Plastic
| Test Conditions
PV 1000 Load 4 Speed 50 |
|||||
|---|---|---|---|---|---|
| Rotating Sample | vs | Stationary Sample | µ Dynamic |
||
| RTP Product | Wear
Factor |
RTP Product | Wear
Factor |
||
|
POM Unfilled |
13 | vs |
PA 6/6 Unfilled |
132 | 0.24 |
|
POM Unfilled |
61 | vs |
PA 6/6 30% Glass Fiber |
228 | 0.22 |
|
POM Unfilled |
61 | vs |
PA 6/6 30% Glass Fiber 15% PTFE |
106 | 0.25 |
|
POM Unfilled |
13 | vs |
PC Unfilled |
41 | 0.47 |
|
POM 20% PTFE |
4 | vs |
PA 6/6 Unfilled |
11 | 0.10 |
|
POM 20% PTFE |
40 | vs |
PA 6/6 30% Glass Fiber |
149 | 0.24 |
|
POM 20% PTFE |
68 | vs |
PA 6/6 30% Glass Fiber 15% PTFE |
118 | 0.20 |
|
POM 20% PTFE |
6 | vs |
PA 6/6 30% Carbon Fiber 15% PTFE |
13 | 0.23 |
|
POM 20% PTFE |
48 | vs |
PC Unfilled |
99 | 0.42 |
|
POM 20% PTFE |
26 | vs |
PA 6/6 30% Glass Fiber 15% PTFE |
63 | 0.27 |
|
POM 20% PTFE |
44 | vs | 88 | 0.42 | |
|
POM 20% PTFE |
8 | vs |
| ||