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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Technical FAQ & Buying Guide
Absolutely. Our CNC carbide inserts (including CNMG, WNMG, DNMG, and APMT series) are manufactured strictly adhering to international ISO/ANSI specifications. A CNMG 120408 from OYYU BEYOND will flawlessly fit any standard turning tool holder or indexable tool from major global brands like Sandvik Coromant, Kennametal, Iscar, Walter, or SECO, providing a highly cost-effective premium alternative without sacrificing tolerance or tool life.
We offer optimized CVD and PVD multi-layer coatings for different ISO material groups:
- For Carbon/Alloy Steel (ISO P): Choose our thick multi-layer CVD coated grades (e.g., Al2O3 + TiN). They provide exceptional crater wear resistance and thermal barriers during high-speed dry or wet roughing.
- For Stainless Steel (ISO M): Choose our nano-structured PVD coated grades with sharp, positive chipbreakers (like -TM or -MA). This combination prevents work hardening and effectively controls sticky chips.
The optimal cutting parameters vary depending on the workpiece hardness and operation type:
- For General Steel Turnings: Recommended cutting speed ($V_c$) ranges from 150 to 280 m/min, with a feed rate ($f$) of 0.15 to 0.45 mm/rev.
- For Stainless Steel Finishing: Recommended cutting speed ($V_c$) is 120 to 200 m/min, with a feed rate ($f$) of 0.10 to 0.25 mm/rev.Always adjust parameters based on early wear patterns: increase $V_c$ if built-up edge occurs, or reduce $V_c$ if severe flank wear is observed.
Yes, we support machine shops, distributors, and global buyers with tiered wholesale pricing and competitive volume discounts. We also provide OEM custom manufacturing solutions for tool holders and carbide inserts based on your technical drawings. Contact our team to request a quick B2B quotation.
We provide secure worldwide express shipping (via DHL, FedEx, and UPS) with specialized, vibration-proof industrial packaging to ensure tools arrive in perfect condition. In-stock items are dispatched within 24-48 hours, while custom or bulk orders typically have a stable lead time of 15-25 days.
All our cutting tools and tool holders are manufactured strictly in accordance with ISO 9001 and international industrial standards. Every batch undergoes 100% rigorous quality control testing using high-precision optical measuring equipment to ensure reliable tool life and stable performance in continuous mass production.