Chlorine

Definition

Chlorine compounds are used as EP additives to prevent sliding metal surfaces from seizing under extreme pressure. These compounds react chemically with the metal to form an inorganic film to prevent the welding of opposing asperities (microscopic projections on metal surfaces that result from normal surface-finishing processes) and the consequent scoring (distress marks or long, distinct scratches on sliding metallic surfaces in the direction of motion) that is destructive to these metal surfaces under high loads.

Standard Test Method Used

ASTM D5384

Reporting Measurement

ppm (parts per million)

Amount of Sample Needed

20 mL