ASTM D202

ASTM D202 focuses on untreated paper used in electrical insulation. It involves testing the static and kinetic frictional properties of such materials to ensure their suitability for applications requiring controlled movement or stability​.

ASTM D202 Test Process

The Inclined Plane Coefficient of Friction Tester evaluates static friction by gradually tilting a plane until the test material begins to slide. The angle at which motion starts is recorded. The test is conducted under controlled conditions, typically at 23°C and a humidity range of 20–70%, to maintain consistency​.

ASTM D202 Test Result Interpretation

The angle of inclination is used to calculate the coefficient of static friction, providing insights into the material’s surface properties. A higher coefficient indicates greater resistance to movement, while a lower value suggests smoother surface interactions​