Ceramic Cutting Materials for Heat-Resistant Superalloys
SPK SiAlON ceramics have been specifically developed for high-performance machining of heat-resistant superalloys, as used in aerospace, turbine manufacturing and the process industry. They combine high hot hardness with sufficient toughness, enabling high cutting parameters in roughing and semi-roughing operations - even when machining scale. This makes them particularly suitable for turning and milling Inconel materials.
A broad range of indexable insert geometries, combined with application-specific chamfer designs, provides process-secure solutions for turning operations. For milling applications such as face milling, contour milling, ramping and helical interpolation, high-performance milling systems are available. With solid ceramic end mills, screw-on milling cutters and shell mills, SPK offers suitable solutions for high metal removal rates in HRSA machining.
For special requirements, the SPK Engineering Team provides support - from special insert geometries through to the design of complete machining plans.
LST 320 – Process Stability in HRSA Rough Turning
LST 320 is a tough, thermally stable SiAlON ceramic designed for productive rough turning of heat-resistant superalloys. The grade is engineered for high cutting speeds and provides strong resistance to notch wear and flank wear — even under varying engagement conditions.
High toughness and excellent wear resistance make the SiAlON ceramic grade LSM 800 a powerful solution for rough milling HRSA materials.
Its stable wear behavior enables high machining speeds and high metal removal rates while maintaining a high level of process security.
When milling HRSA materials, cutting speeds of up to 1,000 m/min are achievable. This allows machining times to be significantly reduced and milling processes to be designed for high economic efficiency.
