Thrust washer test ASTM

A plastic block is weight-loaded against the rim of the disk (line contact) and the wear test is usually between 20 and 30 hours. The plastic samples have dimensions that allow them to be made from plastic flex test bars that are commonly molded out of new plastics to measure their flexural properties. This test is intended to replace the thrust washer test. The ASTM test procedure does not require measurement of counterface wear, but it is always advisable to make this measurement. The disk weighs more than 3 kg, making it difficult to weigh it to measure mass change that occiured in a test Profilometry could be used. 

ASTM D 3702, Test Method for Wear Rate of Materials in Unlubricated Rubbing Contact Using a Thrust Washer Testing Machine, ASTM, West Conshohocken, PA, 1993... 

Table 5.19 Wear Resistance Data of RTP 800 Series Acetal (POM) Compounds Against 1018 C Steel, Determined by Thrust Washer Test Per ASTM D3702 [11]...

Table 6.1 Wear Resistance Data Determined by Thrust Washer Test Per ASTM D3702 for RTP 300 Series Polycarbonate (PC) Compounds Against Various Plastics [5] (cont.)... 

Thrust washer testing conducted per ASTM D 3702. Wear factor [mmy(N m)] x 10. ... 

Figure 12.12 Coefficient of friction versus PVfactor (per ASTM D3702 thrust washer testing at 1 m/s test speed) of Victrex WG PAEK resins [12].

Figure 4. Schematic of ASTM D 3702 Thrust washer plastic wear test.

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