These grades are classified as either ductile or alloy cast iron. The ductile grades have spheroidal graphite and have reasonable strengths and ductility. The cast grades have flake graphite which results in a very brittle alloy but can offer good dampening and hardness properties.
|Representative Alloys||Ductile and Gray|
|Applications||Gray Iron is low cost material with good wear, galling, and dampening properties. Ductile Iron is alow cost material with properties simliar to steels|
|Limitations||Both: Non-weldable, Gray is a brittle material|
|Typical Uses||Gray: cylinder liners, bearings Ductle: piping, automotive components|