Korloy TPGH080204L-CRT CN2000 (R0.4) Precision Cermet Finishing Insert (10pcs)
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The Original Korloy TPGH080204L-CRT CN2000 is an elite Cermet Turning Insert designed for Ultra-High Precision Finishing. By combining the chemical stability of the CN2000 Cermet Grade with the optimized CRT (Finishing/Wiper-effect) chipbreaker, this insert delivers exceptional surface brightness on carbon steel, alloy steel, and stainless steel. The 0.4mm (1/64") corner radius provides enhanced edge security compared to smaller radii, making it ideal for stable, high-speed production runs.
Superior Surface Integrity: Cermet (Ceramic + Metal) grades like CN2000 have a much higher resistance to built-up edge (BUE) than traditional carbide. This results in a cleaner cut, tighter tolerances, and a signature "mirror finish" that often eliminates the need for polishing or grinding.
Technical Specifications:
| ISO Designation | TPGH 080204L-CRT |
| Insert Shape | Triangular 11° Positive (T) |
| Inscribed Circle (IC) | 4.76 mm / (3/16") |
| Thickness (S) | 2.38 mm / (3/32") |
| Corner Radius (r) | 0.4 mm / (0.016") |
| Grade | CN2000 (Mirror Finish Cermet) |
Core Performance Benefits:
- Enhanced Edge Strength: The R0.4 radius is more robust than R0.2, allowing for slightly deeper passes and longer tool life.
- Exceptional Heat Resistance: Maintains hardness at high RPMs, perfect for high-speed finishing where carbide might fail.
- CRT Precision Geometry: Specifically engineered for light depths of cut (0.05mm - 0.50mm) while maintaining excellent chip control.
- Reduced Friction: Low affinity to steel workpieces prevents material welding, ensuring consistent Ra values.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (ap) |
|---|---|---|---|
| Low Carbon Steel | 180-380 m/min | 0.05-0.15 mm/rev | 0.10-0.6 mm |
| Alloy Steel (4140) | 150-300 m/min | 0.05-0.12 mm/rev | 0.10-0.5 mm |
Compatible Tool Holders:
Works with all standard TPGH/TPGB 08-size tooling systems:
- Swiss-Type Gang Tooling: STGCR 1010H08 / STGCR 1212H08
- Small Bore Bars: S08K-STUPR08 / S10K-STUPR08
Machinist Tip: The Cermet Advantage
Optimizing your precision finishing:
This grade is designed for continuous cutting only. Cermet does not like shock. If your part has keyways or cross-holes, stick to a PVD coated carbide grade like PC9030.
Choose the 0.4mm (this model) for higher feed rates and better durability. Only switch to the 0.2mm if you have extremely tight corners or very thin-walled parts that risk vibration.
Pro Advice: Cermet thrives on speed. If your surface finish looks dull or "torn," don't be afraid to increase the RPM. High speed generates the necessary heat to make the cermet cut efficiently.
Packaging: 10 pieces per box.
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