Japan Datong Steel Corporation patented steel -NAK55 is pre-hardened steel,
Without any heat treatment, suitable for mirror-polishing a pre-hardened steel.
NAK55 mainly used for mirror polishing molds, TV filter plate, cosmetics boxes, such as mold,
Precision mold processing wrinkles, office automation equipment, automotive parts, such as mold EDM.

Features:
Without heat treatment, polishing of optical excellent machinability, good corrosion resistance flower