KYOCERA CCMT060204HQ TN60 80° Rhombic Cermet Insert with TN60 Uncoated Grade and 6.35mm IC for Precision CNC Turning

CCMT060204 HQ TN60 Kyocera Cermet Insert 6.35mm IC for Precision CNC Boring

The KYOCERA CCMT060204HQ TN60 is a high-precision 80° rhombic (C-type) cermet turning insert with 7° positive relief angle, engineered for finishing to light-medium turning of carbon steels, alloy steels, and stainless steels. Featuring Kyocera’s advanced HQ 3D chipbreaker and TN60 uncoated cermet grade, it delivers exceptional wear resistance, sharp cutting edge, and superior surface finish in continuous or light interrupted cuts. Ideal for small parts, precision boring, and general engineering, it ensures long tool life and consistent dimensional accuracy in steel machining.

• 80° Rhombic (C-type) Geometry: 7° positive relief angle, sharp honed edge, minimizes cutting forces and workpiece deformation.
• HQ Chipbreaker (Finishing): 3D rake angle + double projection design; optimizes chip flow at light depths of cut (0.5–1.5mm), prevents built-up edge.
• TN60 Grade: Premium uncoated cermet (TiCN-based); high hardness, excellent wear resistance, and thermal stability for steel finishing.
• Precision Cutting Edge: Ground 0.4mm corner radius (R0.4) for high dimensional accuracy and mirror surface finish (Ra ≤ 0.4μm).
• Positive Rake Design: Reduces cutting forces by 15–20%, suitable for low-power CNC machines and thin-wall components.
• Compact Size: 6.35mm inscribed circle, ideal for small-diameter boring and tight-space profiling.

• Carbon steels (1045, S355, Q235)
• Alloy steels (4140, 4340, 42CrMo4)
• Stainless steels (304, 316, 420)
• Pre-hardened steels
• Low-carbon steels

• External finishing & light-medium turning
• Precision boring and internal finishing
• Facing, chamfering, and contouring
• Small automotive parts (pins, shafts)
• Hydraulic components and fittings
• General engineering precision parts

As Kyocera’s first-choice cermet for steel finishing, the TN60 grade with HQ chipbreaker outperforms conventional carbide inserts in surface finish, wear resistance, and thermal stability. The TiCN cermet substrate resists crater wear and plastic deformation at high cutting speeds, while the positive geometry ensures smooth chip evacuation. It reduces downtime for finishing operations and delivers consistent quality in high-volume production, making it the cost-effective solution for precision steel turning.