Korloy CCMT09T304-HMP NC3220 Tough Steel Turning Insert (10pcs)
Price shown is a starting point. Contact us for a precise quote based on your requirements.
The Original Korloy CCMT09T304-HMP NC3220 is a high-performance turning insert engineered for enhanced process security when machining steel. While the NC3120 is an all-rounder, the NC3220 grade is specifically optimized with increased toughness to handle interrupted cuts, unstable workpieces, or older machines with slight vibrations. Combined with the R0.4 nose radius, it provides a perfect balance of precision and durability.
Size Selection Guide: Is CCMT09 the right size for your job? Check our expert blog: CCMT06 vs 09 vs 12: How to Choose Based on Workpiece Diameter.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | CCMT09T304-HMP |
| Grade | NC3220 (High-Toughness CVD) |
| Nose Radius | 0.4 mm (Standard Precision) |
| Primary Application | General Turning / Interrupted Cuts |
Core Performance Benefits:
- Superior Edge Security: The NC3220 substrate is toughened to resist chipping, making it the most reliable choice for non-continuous cutting.
- Advanced CVD Coating: A specialized thermal and wear-resistant layer ensures long tool life even when machining at medium-to-high speeds.
- HMP Chipbreaker: Provides excellent chip control across a wide range of feed rates, preventing long, stringy chips that can damage the workpiece.
- Versatile 0.4mm Radius: Ideal for both semi-finishing and finishing, providing great surface quality while maintaining edge strength.
Recommended Cutting Parameters:
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (f) | Depth of Cut (ap) |
|---|---|---|---|
| Mild Steel / Carbon Steel | 140 - 300 m/min | 0.10 - 0.25 mm/rev | 0.5 - 3.0 mm |
| Alloy Steel / Mold Steel | 100 - 220 m/min | 0.08 - 0.22 mm/rev | 0.5 - 2.5 mm |
Compatible Tool Holders:
This CCMT 09 size insert pairs perfectly with standard SCLCR/L type holders. For best results, use a holder that matches your machine's shank size:
- External Turning: SCLCR1212H09 / SCLCR1616H09 / SCLCR2020K09
- Boring Bars (Internal): S12M-SCLCR09 / S16Q-SCLCR09 / S20R-SCLCR09
Steel Grade Pro-Tip: NC3120 vs. NC3220
Which grade should you choose for your steel job?
Best for stable, continuous cutting at higher speeds. Your go-to all-rounder.
Best for interrupted cuts, shaky setups, or harder steel alloys where tool breakage is a risk.
Shop Tip: If your NC3120 insert is chipping or breaking prematurely, switch to NC3220 for much-needed edge security.
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.