Stainless steel is a challenging material for CNC mills because of its unique properties. One of the most resilient, ductile, and malleable materials is stainless steel. Producing parts with exact tolerances can be difficult due to their tendency to deform easily. Some of the specific challenges of CNC milling stainless steel include:


  • Galling: Galling is the process that occurs when two surfaces come into contact under pressure and transfer material. Galling can be a problem when machining stainless steel because it can damage the workpiece and the cutting tool.


  • Work hardening: Work hardening is a process that stainless steel goes through during machining that strengthens and hardens the material. This could lead to tool wear and complicate the machining of the material.


  • Thermal deformation: Another frequent occurrence with stainless steel is thermal deformation, which is the result of heat changing the material's shape. The end product might therefore have dimensional errors.


  • Chip welding: When tiny fragments of the workpiece material adhere to the cutting instrument, a technique known as chip welding is employed. Chip welding can cause harm to the cutting tool and make it more difficult to smooth the workpiece's surface.


Machine operators can avoid work hardening, thermal deformation, galling, and chip welding by being aware of the challenges associated with CNC milling stainless steel. This can reduce waste and improve the caliber of the finished product.