ASTM D2240 (Standard Test Method for Rubber Property—Shore Hardness)

ASTM D2240 is a standardized method used to measure the hardness of rubber and similar materials through the Shore hardness test. It involves pressing a specific type of indenter into the material's surface with a set force and measuring how deeply the indenter penetrates. The resulting hardness value, expressed on the Shore scale (like Shore A or D), reflects the material's resistance to indentation, providing a consistent way to compare softness or hardness levels across different rubber products. This helps in quality control, material selection, and ensuring products meet required specifications.