Korloy TPGH110304L-CRT CN2000 (R0.4) Mirror Finish Cermet Turning Insert (10pcs)
30-Day Free Returns
Free Worldwide Shipping
The Original Korloy TPGH110304L-CRT CN2000 is a premium Cermet Turning Insert engineered for Stable Precision Finishing. By utilizing the robust 11-size triangular substrate and the elite CN2000 Grade, this insert provides the ultimate surface integrity on carbon steel, alloy steel, and stainless steel. The 0.4mm (1/64") corner radius offers excellent edge strength for medium-length production runs, ensuring that your parts achieve a mirror-like finish without the risk of premature chipping.
Superior Chemical Stability: The CN2000 Cermet (Ceramic + Metal) grade possesses a very low affinity for iron-based materials. This prevents Built-Up Edge (BUE), allowing the insert to maintain a sharp, clean cutting action even at the high speeds required for ultra-fine surface finishes.
Technical Specifications:
| ISO Designation | TPGH 110304L-CRT |
| Insert Shape | Triangular 11° Positive (T) |
| Inscribed Circle (IC) | 6.35 mm / (1/4") |
| Thickness (S) | 3.18 mm / (1/8") |
| Corner Radius (r) | 0.4 mm / (0.016") |
| Grade | CN2000 (Elite Finishing Cermet) |
Core Performance Benefits:
- Enhanced Structural Rigidity: The 11-size thickness (3.18mm) significantly reduces vibrations compared to smaller TPGH sizes.
- Perfect Ra Values: CRT chipbreaker geometry is optimized to create a "wiper effect" that smoothens the surface as it cuts.
- Anti-Oxidation Performance: Cermet’s high thermal resistance allows for higher RPMs, resulting in better productivity and heat management.
- Durable 0.4mm Radius: Specifically chosen for those who need a balance between a fine finish and the ability to handle slight inconsistencies in the finishing pass.
Recommended Cutting Parameters:
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (ap) |
|---|---|---|---|
| Carbon Steel (1045) | 200-450 m/min | 0.05-0.15 mm/rev | 0.10-0.7 mm |
| Alloy Steel (4140) | 150-350 m/min | 0.05-0.12 mm/rev | 0.10-0.6 mm |
Compatible Tool Holders:
Optimized for 11-size triangular positive tool systems:
- External Turning Tool: STGCR 1212H11 / STGCR 1616H11 / STGCR 2020K11
- Precision Boring Bars: S12M-STUPR11 / S16Q-STUPR11 / S20R-STUPR11
Machinist Tip: Cermet Finishing Strategies
How to optimize the life of your TPGH110304L CN2000:
Cermet performs best at high speeds. If your finish looks "torn" or gray, **increase the spindle speed**. Cermet needs high interface temperatures to cut cleanly.
The 11-size is stronger, but cermet remains brittle. Ensure your workpiece is clamped rigidly and avoid any interrupted cuts (like cross-holes or splines).
Pro Advice: For internal boring, the 11-size TPGH is superior to smaller sizes as the increased insert thickness helps dampen harmonic vibrations, leading to better Ra values deep inside the bore.
Packaging: 10 pieces per box.
TPGH 110304L cermet for precision lathe, Korloy CN2000 mirror finish performance, best cermet insert for 4140 steel finishing, internal boring cermet inserts TPGH 11, CRT geometry for chip control