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

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