... applicative to CNC milling machine processing general metal. Machine rotate speed can achieve 8000rpm. Heat resistance is 700°c~800°c ... AlTiN-S coating, golden coating, applicative to high speed machine. Machine rotate speed is 8000rpm~20,000rpm, heat resistance is 1000°c ... HRC65~68, AlTiN-S coating, Sandvik material, for high speed cutting.8.Other products: carbide end mills, carbide inserts, collet ...