ASTM E112

ASTM E112 is a standardized method used by engineers and scientists to measure the grain size of metals and ceramics. Grain size refers to the tiny crystalline regions within a material, which influence its strength and toughness. The procedure involves preparing a sample, examining it under a microscope, and comparing the observed grain pattern to established charts or mathematical formulas. This standardized approach ensures consistent, accurate measurements across different labs and projects, helping to predict how a material will perform and ensuring quality in manufacturing and research.