Is castability grey iron or ductile iron?

Castability refers to how easily a material can be shaped into a desired form using casting processes. Both grey iron and ductile iron have good castability, but grey iron is often favored for its Excellent fluidity and ability to fill intricate molds. Ductile iron, while also castable, offers superior tensile strength and ductility, making it suitable for applications requiring enhanced mechanical properties. Ultimately, the choice between the two depends on the specific requirements of the casting application.