Overview
ASTM A193 is a material specification covering alloy steel and stainless steel bolting used in pressure vessels, flanges, valves, and high temperature industrial applications. It defines mechanical properties, heat treatment requirements, chemical composition, and grade classifications to support fastening reliability and performance. The standard is commonly referenced together with dimensional, coating, thread, and inspection standards depending on the application requirements. ASTM A193 is frequently applied to threaded studs, double-end studs, fully threaded rods, and other critical fastening components used in energy, processing, and industrial systems. When sourcing products to ASTM A193, additional specifications may include grade designation, coating system, thread requirements, testing requirements, and certification requirements.