Sg Iron: The Ultimate Fusion Of Strength, Ductility, And Hardness For Industrial Applications

SG iron (spheroidal graphite iron) is a unique material that combines the strength and machinability of cast iron with the ductility and resilience of steel. Its distinctive microstructure features spherical graphite spheroids, unlike the flakes in gray iron, which reduce stress concentrations, resulting in significantly higher tensile strength. SG iron's ductile nature resists brittle fracture, making it well-suited for applications requiring durability and impact resistance. Its hardness arises from the dispersed hard phase and spheroidal graphite, and heat treatment can further enhance its mechanical properties. With its wear resistance and diverse applications, SG iron finds use in automotive components, machinery, and pipelines.