ASTM G65 Standard Test Method for Measuring Wear

The ASTM G65 test simulates slip wear conditions under moderate pressure using dry sand measured between a rubber tire and a coupon of a block of material under consideration. The test allows a comparison of wear-resistant materials with volume losses in cubic millimeters, with materials with higher wear resistance showing lower volume loss.

Surfaces subject to low-stress wear show that the material has been lifted by hard, sharp particles or other hard, sharp surfaces that drive the material in grooves.

Surface grinding can be a controlled form of low-stress wear. The low tension qualifier means that the abrasive is applied to the surface with relatively low normal forces.

Working forces must be low enough to prevent crushing of the abrasive. Low stress wear rates are directly proportional to the sliding distance and the load on the particles or protrusions. The wear rate is significantly reduced by the hard microcomponents (eg embedded carbides) in the surface microstructure.

This standard does not purport to address all, if any, safety concerns associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and to determine the applicability of regulatory restrictions prior to use.

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