Korloy CCMT060204-C25 CN2000 Cermet Finishing Insert (10pcs)
Price shown is a starting point. Contact us for a precise quote based on your requirements.
The Original Korloy CCMT060204-C25 CN2000 (ANSI: CCMT 21.1) is a premium Cermet (Ceramic-Metal) insert engineered for high-speed finishing of carbon and alloy steels. Unlike standard carbide, the CN2000 cermet grade provides exceptional chemical stability and wear resistance at high temperatures, effectively preventing the workpiece material from welding to the edge. This makes it the ultimate choice for achieving mirror-like surface finishes and maintaining tight dimensional tolerances over long production runs.
Precision Tip: Cermet inserts perform best at high speeds and light depths of cut. For high-speed precision boring, this C25 chipbreaker provides superior chip control.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | CCMT060204-C25 |
| Grade | CN2000 (Cermet for Steel Finishing) |
| Nose Radius | 0.4 mm (1/64") |
| Chipbreaker | C25 (Optimized for Finishing) |
Core Performance Benefits:
- Superior Surface Finish: Achieve Ra values comparable to grinding. The low affinity for steel ensures a clean, shiny surface without tearing.
- Excellent Wear Resistance: The CN2000 grade maintains a sharp edge significantly longer than carbide when running at high surface speeds (Vc).
- High Dimensional Accuracy: Because cermet resists crater wear and flank wear so effectively, your part dimensions stay consistent from the first piece to the last.
- Optimized for Steel: Ideal for carbon steel, alloy steel, and pre-hardened steels up to 45 HRC.
Recommended Cutting Parameters:
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (f) | Depth of Cut (ap) |
|---|---|---|---|
| Low Carbon Steel | 200 - 450 m/min | 0.05 - 0.15 mm/rev | 0.1 - 1.0 mm |
| Alloy Steel (4140/8620) | 150 - 350 m/min | 0.04 - 0.12 mm/rev | 0.1 - 0.8 mm |
Compatible Tool Holders:
For high-speed finishing, a rigid setup is essential. Use these precision SCLCR/L holders:
- Boring Bars (Internal): S08K-SCLCR06 / S10K-SCLCR06 / S12M-SCLCR06
- External Turning: SCLCR1010H06 / SCLCR1212H06
Tech Guide: Cermet (CN2000) vs. Carbide (PC5300)
When to switch to Cermet:
Best for high-speed finishing where surface brightness and tight tolerances are the top priority. Avoid interrupted cuts.
Best for roughing, semi-finishing, and interrupted cuts. Offers much higher toughness but lower surface brightness than cermet.
Machinist's Tip: Cermet is more brittle than carbide. Never use it for heavy interrupted cuts or on manual lathes with significant backlash.
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.