Insert Grades

Coated high-performance grades, covering ISO material groups P, M, K, N, and S.

GTCP425 (HC-P25 | HC-K30 | HC-M20)

Co 7.0%; mixed carbides 8.1%; WC balance. Grain size 1–2 μm. Hardness HV30 1450. Coating: CVD Ti(CN)₂O₃Al multi-layer. Wear-resistant solution for steel and cast iron under stable conditions with high cutting speed.

GTPP430 (HC-P30 | HC-M25 | HC-S25 | HC-K30 | HC-N25)

Co 9.0%; others 0.75%; WC balance. Grain size 0.85 μm. Hardness HV30 1590. Coating: PVD TiAlN. Universal high-performance grade for steel, austenitic steel, and heat-resistant alloys.

GTCP435 (HC-P35 | HC-K40 | HC-M30)

Co 9.6%; mixed carbides 7.8%; others 0.4%; WC balance. Grain size 1–2 μm. Hardness HV30 1400. Coating: CVD Ti(C,N) + Al₂O₃ multi-layer. Reliable choice for machining steel and cast iron under unstable conditions.

GTWN715 (HW-K15)

Co 6.0%; WC balance; other 0.20%. Grain size 0.8–1.3 μm. Hardness HV30 1650. Uncoated carbide grade for machining aluminium and other non-ferrous metals.