Cermet
Ceramic-metal composite based on TiCN bonded by nickel/cobalt. Ideal for fine finishing in steels (ISO P group).
Cermet is the bridge between ceramic and carbide: higher hardness than WC-Co, lower chemical affinity with steel, generating near-mirror Ra in steel reaming.
When to specify cermet in Hanna HR®
- Low to medium alloy P steels (0–35 HRC)
- Target Ra finish ≤ 0.4 µm
- Cutting speeds Vc 150–250 m/min
Hanna HR® insert suffix for cermet: _H.