Oct 30, 2026
grey iron,ductile iron,compacted graphite iron
grey iron,ductile iron,compacted graphite iron
Grey Iron, Vermicular Graphite Iron & Ductile Iron
Grey iron, CGI (vermicular graphite iron) and ductile iron are graphite cast irons, differing mainly in graphite morphology.
- Grey iron: Flake graphite. Excellent damping, thermal conductivity and machinability, low strength. Used for machine beds, pump housings.
- CGI: Vermicular graphite. Balanced thermal conductivity and strength, widely applied in engine cylinder heads.
- Ductile iron (nodular iron): Spherical graphite. High strength and toughness, lower damping and heat conductivity. Suitable for load‑bearing parts such as hubs and steering knuckles.
