What is the diffrenrence between GGG40 and GG25?
GGG40 and GG25 refer to different grades of cast iron, with GGG40 being a type of ductile iron (also known as spheroidal graphite iron) and GG25 being a grade of gray cast iron. GGG40 has a higher tensile strength and ductility due to its microstructure, which allows for better performance under stress. In contrast, GG25 is more brittle and has lower tensile strength, making it suitable for applications where high wear resistance is required. Overall, GGG40 is typically used in applications requiring toughness and impact resistance, while GG25 is often used for components that need good machinability and wear properties.