ASTM D792 (Standard Test Methods for Density and Specific Gravity of Plastics by Displacement)

ASTM D792 is a standardized method used to measure the density and specific gravity of plastics by displacement. This involves submerging a sample in a liquid (usually water) and measuring how much liquid is displaced to determine its density. The specific gravity compares the plastic's density to that of water, helping identify material properties and quality. This test is essential for manufacturers and engineers to ensure plastics meet specifications, predict behavior, and select appropriate materials for different applications, providing consistent and reliable measurements across the industry.