Korloy DNMG110404-HM CN2000 Cermet Turning Insert for Mirror Finish (10pcs)
Price shown is a starting point. Contact us for a precise quote based on your requirements.
The Original Korloy DNMG110404-HM CN2000 (ANSI Standard: DNMG 331) is a premium Cermet turning insert designed specifically for the high-speed finishing of Steel (P) and Carbon Steel. Unlike traditional carbide, the CN2000 Cermet grade offers exceptional chemical stability and heat resistance, preventing built-up edge and ensuring a mirror-like surface finish. Combined with the HM chipbreaker, this insert provides excellent chip control and dimensional accuracy for precision-engineered components.
The Finishing Specialist: CN2000 Cermet is the professional's choice for final passes. It maintains a sharp cutting edge much longer than coated carbide when running at high surface speeds, resulting in consistent tolerances across large production batches.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | DNMG110404-HM |
| ANSI Code | DNMG 331 |
| Grade | CN2000 (High-Speed Cermet) |
| Nose Radius | 0.4 mm (Precision Finishing) |
Core Performance Benefits:
- Mirror Finish Surface: The ceramic-metal composite resists "welding" of the workpiece material, producing a bright, smooth finish.
- Extreme Heat Resistance: Maintains hardness at high RPMs where standard carbide would soften.
- HM Chipbreaker: Specifically designed for semi-finishing to finishing, providing stable chip breaking at shallow depths of cut.
- Double-Sided Value: The DNMG geometry provides 4 usable cutting edges, offering excellent cost-per-edge for finishing operations.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (f) | Depth of Cut (ap) |
|---|---|---|---|
| Low Carbon Steel / Mild Steel | 250 - 500 m/min | 0.05 - 0.20 mm/rev | 0.2 - 1.5 mm |
| Alloy Steel (4140/4340) | 200 - 400 m/min | 0.05 - 0.15 mm/rev | 0.2 - 1.2 mm |
| Free-Cutting Steel | 300 - 600 m/min | 0.10 - 0.25 mm/rev | 0.3 - 2.0 mm |
Compatible Tool Holders:
Fits all standard 55-degree negative holders (DNMG 1104 / 33 size):
- External Turning: DDJNR/L 2020K11 / 2525M11
- Boring Bars: S25S-DDUNR11 / S32T-DDUNR11
Cermet Tip: CN2000 vs. Coated Carbide (NC3020)
When to choose Cermet for your project:
Best for High-Speed Finishing. Use Cermet when surface quality is the top priority. It performs best in dry machining or with minimal coolant on continuous cuts.
Best for General Semi-Roughing to Finishing. Carbide is tougher than Cermet and can handle interrupted cuts or heavier loads that might cause Cermet to crack.
Machinist's Pro Tip: Cermet (CN2000) thrives on speed. If you run it too slow, it may chip. Increase your RPM to get that famous Korloy mirror finish!
Packaging: 10 pieces per box.
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.