Stanyl® has outstanding tribological properties compared to other high performance plastics

Stanyl has an excellent abrasion resistance (or wear resistance) and outperforms most other engineering/high performance plastics under most conditions but especially at higher temperatures or high torque/loads. Although the coefficients of friction of standard grades of these materials are quite similar, Stanyl outperforms its competitors. The main reason is its higher PV rating, which permits higher pressures or velocities to be used.

Where other materials fail when using demanding application conditions (high temperature, high loads, high velocities, harsh chemical environment, vibrations) due to melting (POM, PA6), brittle behavior (PPS, PPAs), low stiffness at high temperatures (POM, PPS, PA6, PA66, PPAs) or high abrasiveness (PPS), Stanyl will deliver smooth and reliable performance (see graphs below).

Modified Stanyl grades with even better wear properties are available in unreinforced as well as glass fiber reinforced form. Its smooth and tough surface, combined with its stiffness at elevated temperatures, high melting point, high fatigue and vibration resistance, high resistance against crack propagation and resistance against oil and greases, make Stanyl an ideal material for sliding parts like valve lifter guides, chain tensioners(see graphs below), gears, bushings and thrust washers.

Comparison between Stanyl, PA66 and POM  with respect to the Taber Abrasion Test (ASTM D1044).

Stanyl performs better than POM at high PV combinations.

Stanyl performs better than PPA at high PV combinations.

Stanyl performs better than PA6 and PA66 at both low and high PV combinations.

Stanyl performs better than PPS at high PV combinations.

Chain tensioner wear testing: Stanyl UF outperforms PA66 UF.