ASTM D4751 (Standard Test Method for Low-Temperature Flow Properties of Lubricating Greases)

ASTM D4751 is a standardized test that measures how well lubricating grease flows at low temperatures. It determines the lowest temperature at which a grease remains pourable and workable, ensuring it can perform properly in cold conditions. The test involves cooling a sample of grease and observing its flow behavior, which helps manufacturers and users predict how the grease will behave in real-world low-temperature environments, such as in machinery or equipment operating in cold climates. This ensures reliable lubrication and performance regardless of temperature extremes.