H Series High Speed & High Hardness End Mill — H4E08020

A 0.2 µm ultra-fine grain carbide substrate provides extremely high hardness. Reinforced tool structure with whole-process precision control delivers outstanding cutting performance. The RH coating, a new-generation upgrade of conventional TiSiN, offers ultra-high surface hardness and high-temperature oxidation resistance, making it ideal for high-speed and hard-material machining. Verified test (this exact size): D8×20×4T×60L on CR12MOV mold steel HRC58–60, cutting speed 100.48 m/min, 4,000 rpm, feed 1,200 mm/min, 0.07 mm/tooth, AE 0.1 mm / AP 13 mm, air cooling, limited edge wear after 100 minutes of machining. Series range Ø1–20 mm.