Abstract
Soft magnetic material is composite material of plastic series iron system materials and materials, but gives influence to wear rate of a tool when this ingredient ratio is different. In particular the influence becomes big in a high–speed machining condition. In this report, I investigated work piece material and relation of tool wear speed when high speed processed soft magnetic material using a binder–less PcBN tool. As a result it was assumed that it was clear with a plastic component rate in, work piece influencing tool wear mechanism greatly.