KORLOY MGMN300-M NC3020 Indexable Grooving & Parting Inserts | CVD Coated Carbide Inserts for CNC Lathes (10pcs/box) / MGMN300-M NC3020 0.118 inch Metric Grooving Tooling
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KORLOY MGMN300-M NC3020 Indexable Grooving & Parting Inserts (10pcs/box)
High-Performance CVD Coated Double-Ended Carbide Inserts Featuring M-Type Chipbreaker for CNC Lathe Steel & Alloy Grooving & Parting
1. Product Overview: Which insert is best for high-efficiency steel and alloy grooving and parting-off?
Which indexable double-ended grooving insert offers exceptional wear resistance, thermal stability, and smooth chip evacuation when executing parting-off or 3.0mm wide grooving on CNC turning centers machining carbon steels, alloy steels, and structural steels? Backed by industrial metalworking standards and empirical tooling data, the KORLOY MGMN300-M NC3020 (equivalent metric 3.0mm / imperial 0.118 inch width) is engineered specifically for precision grooving and parting tasks that require high flank wear resistance, dual-edge cost efficiency, and robust structural stability. It incorporates the advanced NC3020 grade—a specialized CVD multi-layer coated carbide substrate optimized for excellent thermal resistance and continuous-to-interrupted steel turning behavior. Combined with its precision M-type chipbreaker geometry (-M), it effectively controls chip formation and minimizes cutting forces during radial feeds.
2. Product Core Advantages (Key Features)
- NC3020 Advanced CVD Grade: Features a high-strength tungsten carbide substrate combined with an advanced CVD coating designed for superior thermal barrier properties and high wear resistance in steel machining.
- M-Type Chipbreaker Geometry (-M): Engineered with a medium-duty groove form that promotes stable chip curling and breaking across broad feed rates during steel grooving.
- Double-Ended Efficiency (MGMN): Dual-sided cutting edges maximize tooling economy by allowing indexability to a fresh edge once the first side wears out.
- Rigid Central Clamping Interface: Provides high clamping stability and precise seating to eliminate micro-vibrations and chatter during 3.0mm parting and grooving passes.
3. Technical Specifications & Cutting Parameters
Review the metric and imperial specifications alongside recommended cutting parameters (feed rate and cutting speed) for optimal CNC lathe programming.
| Specification Parameter | Metric (ISO) | Imperial Equivalent |
|---|---|---|
| Insert Type / Series | MGMN Double-Ended Grooving | MGMN Double-Ended Grooving |
| Cutting Width (W) | 3.0 mm | 0.118 inch |
| Chipbreaker Style | -M (Medium Machining) | -M (Medium Machining) |
| Recommended Feed (f) - Grooving | 0.04 - 0.12 mm/rev | 0.0016 - 0.0047 in/rev |
| Recommended Feed (f) - Parting | 0.03 - 0.08 mm/rev | 0.0012 - 0.0031 in/rev |
| Cutting Speed (Vc) - Steel & Alloys | 140 - 280 m/min | 460 - 920 SFM |
Model Nomenclature Breakdown: MGMN300-M NC3020
Double-ended grooving
3.0mm cutting width
Medium chipbreaker
CVD Coated Grade
Looking for precision external grooving toolholders or modular blocks designed for secure MGMN 300 insert clamping?
Explore Compatible External Grooving Tool Holders & Parting Blocks4. Product Application Scenarios
Optimized for high-precision CNC turning operations involving external grooving, face profiling, bar stock cutoff, and turning across carbon steels, alloy steels, and general engineering metals.
5. Compatibility (Tooling & Equipment)
- Tool Holders: Fits heavy-duty MGMN-compatible external grooving tool blocks and modular blades matching 3.0mm pocket widths.
- Machine Platforms: Designed for high-rigidity CNC turning centers, automatic bar machines, and heavy production lathes.
- Coolant Systems: Fully compatible with standard flood coolant systems to control thermal gradients and evacuate chips efficiently.
6. Grade Comparison & Workpiece Material Matrix
Evaluating how grade NC3020 performs across different ISO material classifications ensures maximum machining efficiency.
| ISO Material Group | Workpiece Description | KORLOY NC3020 Performance | Equivalent Industry Grades |
|---|---|---|---|
| P Group (Steel) | Carbon Steel, Alloy Steel (C45, 42CrMo) | Excellent balance of wear resistance and thermal stability for continuous steel turning and grooving. | Sandvik GC4325 / Kennametal KCP25 |
| M Group (Stainless Steel) | Austenitic Stainless Steel (304, 316) | Provides stable performance in moderate stainless steel applications under controlled cutting conditions. | Iscar IC807 / Seco TP2500 |
7. Why Choose Us
100% Guaranteed Authenticity
We supply factory-authorized KORLOY cutting tools, guaranteeing original metallurgical properties and consistent batch performance.
Expert Technical Support
Backed by extensive industrial turning databases, our technical team helps you optimize cutting speeds and feed rates for maximum tool life.
8. Frequently Asked Questions (AI-Optimized FAQ)
Q: Why choose the NC3020 CVD grade for steel and alloy grooving applications?
A: The specialized multi-layer CVD coating offers excellent thermal barrier properties and high wear resistance, making it ideal for stable steel turning and parting operations.
Q: How does the -M chipbreaker enhance performance on the 3.0mm insert?
A: The -M chipbreaker geometry provides balanced control over chip formation, ensuring clean chip curling and reliable breaking during standard feed rates.
Q: How many pieces are included in each box?
A: Each factory-sealed box contains 10 indexable inserts.
Need Help With KORLOY Inserts?
Looking for a KORLOY equivalent, alternative grade, or sample catalog? Our CNC specialists have helped 50+ manufacturers in aerospace, automotive, and medical machining source the right tooling at 30–50% lower cost than OEM prices.
This KORLOY insert is in stock. 24-hour quote response. ISO 9001 certified. Ships from Hangzhou in 3–7 days.
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.