KORLOY MGMN250-G NC3020 Indexable Grooving & Parting Inserts | PVD Coated Carbide Inserts for Steel & Stainless Steel CNC Lathes (10pcs/box) / MGMN250-G NC3020 0.098 inch Metric Grooving Tooling
✓ In Stock & Fast Dispatch: Ships within 24–48 Hours from China
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✓ Technical Support: Need grade selection help? Contact Engineer
KORLOY MGMN250-G NC3020 Indexable Grooving & Parting Inserts (10pcs/box)
High-Performance PVD Coated Carbide Inserts with 2.5mm Width & -G Sharp Chipbreaker Geometry for CNC Lathe Steel & Alloy Turning
1. Product Overview: Which insert is best for high-precision grooving, low cutting forces, and clean parting-off in alloy and carbon steels?
Which indexable grooving insert featuring a 2.5mm cutting width, an optimized -G sharp chipbreaker geometry, and advanced PVD metallurgical coatings offers exceptional edge toughness, minimal cutting resistance, and smooth chip evacuation when executing precision grooving or parting-off on CNC turning centers machining alloy steels, carbon steels, and stainless steels? Backed by certified metalworking research and industrial tooling parameters, the KORLOY MGMN250-G NC3020 (equivalent metric 2.5mm width with -G chipbreaker / imperial 0.098 inch width) is engineered specifically for stable, high-efficiency material removal across varying cutting speeds. It utilizes the advanced NC3020 grade—a specialized PVD coated carbide substrate optimized for excellent wear resistance and thermal shock stability in steel and alloy turning applications. Combined with its designated -G geometry, it guarantees sharp cutting action, low cutting forces, and extended tool life.
2. Product Core Advantages (Key Features)
- NC3020 Advanced PVD Grade: Features a high-toughness carbide substrate combined with a specialized PVD coating designed to withstand thermal cracking, built-up edge, and abrasive wear during high-speed turning.
- -G Sharp Chipbreaker Geometry: Designed with a sharp positive rake angle and narrow chip-forming pockets that significantly lower cutting resistance and prevent burr formation on delicate components.
- 2.5mm Cutting Width & Dual-Edge Economy: Provides a robust 2.5mm width profile with two indexable cutting edges for maximum tool life and low per-part operational costs.
- Secure Pocket Clamping: Engineered to fit securely into standard external grooving tool blocks, eliminating micro-motion and vibration during high-precision feed rates.
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 Grooving & Parting | MGMN Grooving & Parting |
| Cutting Width (W) | 2.5 mm | 0.098 inch |
| Chipbreaker & Insert Geometry | -G (Sharp Chipbreaker) | -G Sharp Profile |
| Recommended Feed (f) - Grooving | 0.04 - 0.12 mm/rev | 0.0016 - 0.0047 in/rev |
| Recommended Feed (f) - Parting | 0.03 - 0.07 mm/rev | 0.0012 - 0.0028 in/rev |
| Cutting Speed (Vc) - Carbon & Alloy Steels | 100 - 220 m/min | 328 - 721 SFM |
Model Nomenclature Breakdown: MGMN250-G NC3020
Double-ended grooving
2.5mm cutting width
Sharp chipbreaker
PVD Coated Grade
Looking for rigid external grooving toolholders or modular blocks designed for secure MGMN 250 insert clamping?
Explore Compatible External Grooving Tool Holders & Parting Blocks4. Product Application Scenarios
Optimized for CNC turning operations involving precision external grooving, shallow profile turning, face grooving, and clean bar stock cutoff across alloy steels, carbon steels, and structural steels.
5. Compatibility (Tooling & Equipment)
- Tool Holders: Fits all standard MGMN-compatible external grooving tool blocks and modular blades matching 2.5mm pocket widths.
- Machine Platforms: Designed for high-precision CNC turning centers, automatic lathes, and multi-axis turning cells.
- Coolant Systems: Highly compatible with flood coolant and high-pressure coolant delivery to maximize tool longevity in steel machining.
6. Grade Comparison & Workpiece Material Matrix
Evaluating how grade NC3020 performs across different ISO material classifications ensures maximum productivity.
| ISO Material Group | Workpiece Description | KORLOY NC3020 Performance | Equivalent Industry Grades |
|---|---|---|---|
| P Group (Steel) | Carbon Steel, Alloy Steel (1045, 4140, 8620) | PVD coating provides superior film adhesion and micro-hardness, preventing edge chipping during interrupted steel cuts. | Sandvik GC1125 / Kennametal KC5410 |
| M Group (Stainless Steel) | Austenitic Stainless Steel (304, 316) | Smooth PVD layer reduces chemical affinity with stainless materials, minimizing built-up edge and thermal wear. | Iscar IC808 / Seco TS2000 |
7. Why Choose Us
100% Guaranteed Authenticity
We supply factory-authorized KORLOY cutting tools, ensuring 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: What is the primary application for KORLOY NC3020 grade?
A: NC3020 is a specialized PVD coated grade optimized for precision grooving, parting, and turning of alloy steels and stainless steels.
Q: How does the -G chipbreaker perform in precision grooving?
A: The -G sharp geometry reduces cutting resistance, minimizes burr formation, and provides clean chip breaking at lighter feed rates.
Q: How many inserts 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.