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

PC

Unfilled

2525 vs

PA 6/6

Unfilled

1237 0.64

PC

Unfilled

13661 vs

PA 6/6

30% Glass Fiber

574 0.39

PC

30% Glass Fiber

6326 vs

PC

30% Glass Fiber

1739 0.31

PC

30% Glass Fiber

258 vs

PA 6/6

30% Glass Fiber

15% PTFE

716 0.29

PC

30% Glass Fiber

15% PTFE

455 vs

PA 6/6

30% Glass Fiber

15% PTFE

393 0.19

PC

30% Glass Fiber

15% PTFE

1626 vs

PC

Unfilled

639 0.28

PC

30% Glass Fiber

15% PTFE

198 vs

PA 6/12

30% Glass Fiber

15% PTFE

348 0.18

PC

30% Glass Fiber

15% PTFE

8 vs

PC

30% Carbon Fiber

15% PTFE

58 0.11

PC

30% Glass Fiber

15% PTFE

831 vs

PBT

30% Glass Fiber

15% PTFE

1070 0.11

PC

30% Glass Fiber

15% PTFE

4 vs

PA 6/12

30% Carbon Fiber

15% PTFE

106 0.17

PC

30% Glass Fiber

15% PTFE

2350 vs

PPS

30% Glass Fiber

15% PTFE

573 0.28

PC

30% Glass Fiber

15% PTFE

661 vs

PA 6/6

30% Glass Fiber

494 0.23

PC

15% PTFE

167 vs

PC

15% PTFE

684 0.14

PC

10% Carbon Fiber

15% PTFE

5165 vs

PC

10% Glass Fiber

15% PTFE

260 0.25

PC

10% Carbon Fiber

15% PTFE

3145 vs

PC

10% Carbon Fiber

15% PTFE

203 0.32

PC

10% Carbon Fiber

15% PTFE

23 vs

PA 6/12

30% Carbon Fiber

15% PTFE

5 0.13

PC

10% Carbon Fiber

15% PTFE

28 vs

PA 6/6

30% Carbon Fiber

15% PTFE

31 0.15

PC

10% Carbon Fiber

15% PTFE

217 vs

PA 6/12

30% Glass Fiber

15% PTFE

78 0.16
  • Thrust washer testing conducted per ASTM D 3702
  • Wear Factor: (mm3/N m)10-8
  • PV: KPa m/sec
  • Load: N
  • Speed: m/sec

Plastic vs Steel

RTP Product