A743 CG3M

CF20 is an austenitic stainless steel casting alloy specified by ASTM A743/A743M, used in general-purpose corrosion-resistant applications. It is compositionally similar to CF8 but typically contains a slightly higher carbon content, offering good mechanical strength along with moderate corrosion resistance. CF20 is suitable for service in environments involving mild acids, water, and atmospheric exposure. It is commonly used for cast components such as pump and valve housings, flanges, and fittings in industries such as water treatment, chemical processing, and food handling. Its balance of formability, strength, and corrosion resistance makes it a practical choice for a wide range of industrial castings.