ASTM D Series

The ASTM D Series refers to a collection of standardized tests developed by ASTM International that evaluate the physical and chemical properties of materials, primarily in the petroleum and lubricant industries. These standards help ensure quality and reliability by providing consistent methods for testing things like viscosity, flash point, and pour point of oils and fuels. By using these established benchmarks, manufacturers and consumers can ensure that products meet safety and performance requirements, leading to better-engineered and more trustworthy materials.