Grey Cast Iron

Grey cast iron has the graphite in typical flake form, and the main characteristics are: low impact strength (brittle behavior); good thermal conductivity, low heat in cutting process. Grey cast iron has low impact strength, generates low cutting forces and the machinability is very good. Wear is created in the cutting process only by abrasion; there is no chemical wear. Grades to use are 3210 or 3225. The preferred geometries are -KF, -KM, -KR and -KRR. When finishing, consider wiper geometry -WMX.