Advanced workpiece materials

Group M

Group M materials include stainless and heat resistant steels.

When machining this type of material shear type chips are generated and the cutting edge is subject to severe impact and vibration.


Machinability of workpiece materials

The features of stainless steel include adhesiveness, high work hardening properties and low thermal conductivity.


Stainless steel has relatively poor machinability because of its high cutting resistance and the heat generated during machining, which causes obvious tool damage such as chipping and crater wear. Stainless steel also has high affinity to tool materials, lead to problems such as welding and crater wear. In addition, oxidation damage and notch wear are also typical types of tool damage seen when machining stainless steel. Notch wear can also cause burrs on the machined surface.