Wear Resistance Data

RTP 300 Series Polycarbonate (PC) Compounds — Metric Units

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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 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
RTP 300
PC
Unfilled
2525 vs RTP 200
PA 6/6
Unfilled
1237 0.64
RTP 300
PC
Unfilled
13661 vs RTP 205
PA 6/6
30% Glass Fiber
574 0.39
RTP 305
PC
30% Glass Fiber
6326 vs RTP 305
PC
30% Glass Fiber
1739 0.31
RTP 305
PC
30% Glass Fiber
258 vs RTP 205 TFE 15
PA 6/6
30% Glass Fiber
15% PTFE
716 0.29
RTP 305 TFE 15
PC
30% Glass Fiber
15% PTFE
455 vs RTP 205 TFE 15
PA 6/6
30% Glass Fiber
15% PTFE
393 0.19
RTP 305 TFE 15
PC
30% Glass Fiber
15% PTFE
1626 vs RTP 300
PC
Unfilled
639 0.28
RTP 305 TFE 15
PC
30% Glass Fiber
15% PTFE
198 vs RTP 205 D TFE 15
PA 6/12
30% Glass Fiber
15% PTFE
348 0.18
RTP 305 TFE 15
PC
30% Glass Fiber
15% PTFE
8 vs RTP 285 TFE 15
PC
30% Carbon Fiber
15% PTFE
58 0.11
RTP 305 TFE 15
PC
30% Glass Fiber
15% PTFE
831 vs RTP 1005 TFE 15
PBT
30% Glass Fiber
15% PTFE
1070 0.11
RTP 305 TFE 15
PC
30% Glass Fiber
15% PTFE
4 vs RTP 285 D TFE 15
PA 6/12
30% Carbon Fiber
15% PTFE
106 0.17
RTP 305 TFE 15
PC
30% Glass Fiber
15% PTFE
2350 vs RTP 1305 TFE 15
PPS
30% Glass Fiber
15% PTFE
573 0.28
RTP 305 TFE 15
PC
30% Glass Fiber
15% PTFE
661 vs RTP 205
PA 6/6
30% Glass Fiber
494 0.23
RTP 300 TFE 15
PC
15% PTFE
167 vs RTP 300 TFE 15
PC
15% PTFE
684 0.14
RTP 381 TFE 15
PC
10% Carbon Fiber
15% PTFE
5165 vs RTP 301 TFE 15
PC
10% Glass Fiber
15% PTFE
260 0.25
RTP 381 TFE 15
PC
10% Carbon Fiber
15% PTFE
3145 vs RTP 381 TFE 15
PC
10% Carbon Fiber
15% PTFE
203 0.32
RTP 381 TFE 15
PC
10% Carbon Fiber
15% PTFE
23 vs RTP 285 D TFE 15
PA 6/12
30% Carbon Fiber
15% PTFE
5 0.13
RTP 381 TFE 15
PC
10% Carbon Fiber
15% PTFE
28 vs RTP 285 TFE 15
PA 6/6
30% Carbon Fiber
15% PTFE
31 0.15
RTP 381 TFE 15
PC
10% Carbon Fiber
15% PTFE
217 vs RTP 205 D TFE 15
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 Tested vs. Steel (1018 C)
PV 70
Load 1.80
Speed 0.25
PV 175
Load 2.25
Speed 0.50
PV 350
Load 9.00
Speed 0.25
Wear
Factor
µ
Dynamic
Wear
Factor
µ
Dynamic
Wear
Factor
µ
Dynamic
RTP 300
Unfilled PC
1118 0.60        
RTP 300 TFE 10
10% PTFE
655 0.24 830 0.22 253 0.13
RTP 300 TFE 15
15% PTFE
263 0.33 191 0.27 68 0.21
RTP 300 TFE 20
20% PTFE
354 0.31 253 0.24 117 0.18
RTP 300 TFE 10 SI2
10% PTFE
2% Silicone
995 0.35 326 0.26 117 0.18
RTP 305 TFE 15
30% Glass Fiber
15% PTFE
177 0.35 93 0.53 1007 0.27
RTP 385 TFE 15
30% Carbon Fiber
15% PTFE
285 0.30 205 0.39 72 0.36
RTP 300 AR 10 TFE 10
10% Aramid Fiber
10% PTFE
985 0.38 12100 0.29 14733 0.31
  • Thrust washer testing conducted per ASTM D 3702
  • Wear Factor: (mm3/N m)10-8
  • PV: KPa m/sec
  • Load: N
  • Speed: m/sec

Comparing competitive data note

  • RTP Company reports Wear Factors per unit Force (KF) with units of (mm3/N m)10-8. This is the industry standard way to calculate and report Wear Factor. Some suppliers report Wear Factors per unit Pressure (KP) with units of (mm3/Pa m)10-11. This value is arrived at by dividing the KF by the contact surface of the test specimen 0.00023 or 2.3-4 m2. As result of this reporting discrepency, RTP Company's Wear Factor values appear to be significantly higher. For example a KP of 3 (mm3/Pa m)10-11 would be equal to KF of 3/0.00023 = 13 (mm3/N m)10-8.

No information supplied by RTP Company constitutes a warranty regarding product performance or use. Any information regarding performance or use is only offered as suggestion for investigation for use, based upon RTP Company or other customer experience. RTP Company makes no warranties, expressed or implied, concerning the suitability or fitness of any of its products for any particular purpose. It is the responsibility of the customer to determine that the product is safe, lawful and technically suitable for the intended use. The disclosure of information herein is not a license to operate under, or a recommendation to infringe any patents.