Korloy DNMG110404-HM NC3220 High-Efficiency Steel Turning Insert (10pcs)
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The Original Korloy DNMG110404-HM NC3220 (ANSI Standard: DNMG 331) represents the next generation of high-efficiency steel turning technology. Building upon the success of the NC3120, the NC3220 grade features an enhanced CVD coating with improved layer adhesion and thermal stability. This makes it exceptionally reliable for high-speed finishing (R0.4 precision) where consistent surface quality and extended tool life are critical for automated production.
Next-Gen Performance: NC3220 is engineered for modern CNC shops. It offers a wider application window than previous generations, performing brilliantly in both high-speed continuous cutting and stable semi-finishing of various carbon and alloy steels.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | DNMG110404-HM |
| ANSI Code | DNMG 331 |
| Grade | NC3220 (New Generation Universal) |
| Nose Radius | 0.4 mm (Precision Finishing) |
Core Performance Benefits:
- Advanced CVD Technology: New coating chemistry provides a harder, smoother surface that resists crater wear at higher RPMs.
- Consistent Tool Life: Formulated to reduce the "unpredictable" wear patterns often seen in mixed steel batches.
- HM Precision Geometry: Optimized for fine chip control, ensuring your machine stays free of long, tangled chips during finishing passes.
- Thermal Barrier: The NC3220 substrate handles heat buildup more effectively, maintaining edge sharpness for longer durations.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (f) | Depth of Cut (ap) |
|---|---|---|---|
| Mild Steel (1018/S20C) | 180 - 350 m/min | 0.08 - 0.25 mm/rev | 0.3 - 2.0 mm |
| Carbon Steel (1045/S45C) | 160 - 320 m/min | 0.10 - 0.22 mm/rev | 0.4 - 2.2 mm |
| Alloy Steel (4140/SCM440) | 140 - 280 m/min | 0.08 - 0.20 mm/rev | 0.4 - 1.8 mm |
Compatible Tool Holders:
Fits all standard 55-degree negative holders (11-size pocket):
- External Holders: DDJNR/L 1616H11 / 2020K11 / 2525M11
- Internal Boring Bars: S20R-DDUNR11 / S25S-DDUNR11 / S32T-DDUNR11
Why Upgrade to NC3220?
Korloy NC3220 vs. NC3120 (The Evolution):
Features Enhanced Wear Resistance. It is designed to run cooler and last longer in modern, fast CNC machines. If you want to increase your Vc (cutting speed) without sacrificing tool life, this is the grade.
A reliable legacy grade. While still excellent for general use, NC3120 lacks the latest heat-shielding technology found in the 3220 series.
Machinist's Pro Tip: If you find that your NC3120 inserts are wearing out prematurely on the flank during long finishing cuts, the NC3220 will likely provide the extra 20-30% life you're looking for.
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.