Korloy MRMN600-M NC3030 6mm Full Radius R3.0 Heavy Duty Steel Profiling Insert (10pcs)
Price shown is a starting point. Contact us for a precise quote based on your requirements.
The Original Korloy MRMN600-M NC3030 is a heavy-duty 6.0mm Full Radius (R3.0) Profiling Insert specifically engineered for high-load Steel (P) machining. Featuring the high-toughness NC3030 CVD coating, this insert is the industry's primary choice for interrupted cuts, heavy forgings, and machining large-diameter components on high-torque CNC lathes. The massive 6mm wide Full Radius geometry combined with the -M (Medium) chipbreaker ensures ultimate edge security and reliable chip control during deep profiling of carbon and alloy steels.
Built for the Toughest Conditions: NC3030 is the most resilient CVD grade in the Korloy steel-turning lineup. It is specially formulated to absorb mechanical shocks and resist thermal cracking, making it the perfect "safety grade" for 6mm wide profiling where tool pressure is at its peak.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | MRMN600-M |
| Insert Shape | Full Radius (Round Nose) |
| Width / Radius | 6.0 mm / R3.0 |
| Grade | NC3030 (High-Toughness Steel CVD) |
Core Performance Benefits:
- Extreme Metal Removal Rate: 6.0mm width handles massive radial depths of cut, reducing total machining cycles for large parts.
- Maximum Edge Security: NC3030's tough substrate prevents chipping during interrupted cuts or when hitting surface scale.
- R3.0 Full Radius Geometry: Ideal for creating large fillets, spherical seats, and smooth 3D contours on heavy machinery.
- Robust Chip Control: The -M chipbreaker is optimized for heavy feed rates, effectively managing chips in tough carbon steels.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (f) |
|---|---|---|
| Carbon Steel (S45C / 1045) | 100 - 180 m/min | 0.12 - 0.35 mm/rev |
| Alloy Steel (42CrMo / 4140) | 80 - 150 m/min | 0.10 - 0.30 mm/rev |
| Heavy Forgings / Interrupted | 60 - 110 m/min | 0.08 - 0.20 mm/rev |
Compatible Tool Holders:
Precision 6.0mm seat for heavy-duty holder systems:
- External Holders: MGEHR 3232-6 / 4040-6
- Internal Holders: MGIVR 4032-6 / 5040-6
Industrial Tip: Why MRMN600-M NC3030?
In the world of 6.0mm profiling, the force acting on the tool is immense. Choosing NC3030 is about reliability over raw speed:
The "Heavy Hitter." Its high-toughness substrate acts like a shock absorber. If your 6mm groove has a hole or keyway, this is the only grade that will survive the impact long-term.
The "High Speed" Version. Use NC3020 only if the cut is 100% continuous and the setup is extremely rigid. It will wear slower at high speeds but is much more brittle.
Machinist's Pro Tip: For MRMN600-M NC3030, ensure your CNC machine has the power to maintain constant surface speed (CSS). When profiling with an R3.0 radius, the contact area changes rapidly—consistent torque is essential for a clean finish.
Packaging: 10 pieces per box.
Korloy MRMN600-M price, 6mm full radius insert for heavy steel, R3.0 round nose insert for large shafts, NC3030 vs NC3020 for 6mm grooving, MRMN600-M cutting speed and feed rate
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.