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 |
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Rotating Sample | vs | Stationary Sample | µ Dynamic |
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RTP Product | Wear
Factor |
RTP Product | Wear
Factor |
||
PC Unfilled |
1256 | vs |
PA 6/6 Unfilled |
616 | 0.64 |
PC Unfilled |
6797 | vs |
PA 6/6 30% Glass Fiber |
285 | 0.39 |
PC 30% Glass Fiber |
3147 | vs |
PC 30% Glass Fiber |
865 | 0.31 |
PC 30% Glass Fiber |
129 | vs |
PA 6/6 30% Glass Fiber 15% PTFE |
356 | 0.29 |
PC 30% Glass Fiber 15% PTFE |
226 | vs |
PA 6/6 30% Glass Fiber 15% PTFE |
195 | 0.19 |
PC 30% Glass Fiber 15% PTFE |
809 | vs |
PC Unfilled |
318 | 0.28 |
PC 30% Glass Fiber 15% PTFE |
98 | vs |
PA 6/12 30% Glass Fiber 15% PTFE |
173 | 0.18 |
PC 30% Glass Fiber 15% PTFE |