Korloy MGMN400-M PC215K 4mm Double-Ended Cast Iron Grooving Insert (10pcs)
Price shown is a starting point. Contact us for a precise quote based on your requirements.
The Original Korloy MGMN400-M PC215K is a high-performance 4.0mm Double-Ended Grooving Insert specifically engineered for Precision Cast Iron Machining. Featuring the advanced PC215K PVD grade, this insert excels in processing Gray Cast Iron (GG) and Ductile Iron (GGG). It combines a micro-grain carbide substrate with a heat-resistant PVD coating to provide exceptional edge toughness, making it the most reliable 4.0mm solution for workshops dealing with interrupted cuts or abrasive casting skins.
Stability for Heavy Castings: At 4.0mm wide, the MGMN400-M provides the necessary rigidity for deep radial plunging in large iron components. The PC215K grade ensures that the cutting edge remains intact even when encountering sand holes or inclusions common in cast materials.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | MGMN400-M |
| Insert Width (w) | 4.0 mm (+/- 0.03) |
| Grade | PC215K (Precision Cast Iron Specialist - PVD) |
| Application | Gray Iron, Ductile Iron, Malleable Iron |
Core Performance Benefits:
- Superior Impact Resistance: Optimized PVD coating prevents micro-chipping during interrupted cuts in iron castings.
- 4.0mm High Rigidity: Effectively handles the high cutting torque required for wide-groove applications.
- Excellent Wear Resistance: Specifically formulated to resist the abrasive nature of carbon-rich iron materials.
- Optimized Chip Evacuation: The -M chipbreaker rolls wide chips tightly for easy removal from deep grooves.
Recommended Cutting Parameters:
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (f) |
|---|---|---|
| Gray Cast Iron (HT250/GG25) | 110 - 230 m/min | 0.10 - 0.22 mm/rev |
| Ductile Iron (QT600/GGG60) | 90 - 180 m/min | 0.08 - 0.18 mm/rev |
| Cast Iron with Scale | 70 - 130 m/min | 0.07 - 0.15 mm/rev |
Compatible Tool Holders:
To support the high cutting forces of 4.0mm inserts, pair with heavy-duty holders:
- External Holders: MGEHR 2020-4 / 2525-4 / 3232-4
Cast Iron Grade Insight: PC215K vs. NC6210
Korloy offers two specialized paths for K-Group (Cast Iron) machining:
The Precision Toughness King. A PVD grade that is sharper and more impact-resistant. Best for 2.0mm-4.0mm widths where edge stability and avoiding chipping are the main priorities.
The High-Speed Wear Giant. A CVD grade with thick alumina coatings. Best for 5.0mm+ widths and continuous high-speed roughing where pure heat and abrasion resistance are needed.
Machinist's Pro Tip: For MGMN400-M PC215K, if you encounter heavy "chilled" spots (extra hard surfaces) on your castings, reduce the cutting speed slightly but maintain the feed rate. This allows the tough PC215K substrate to "bite" through the hardness without over-heating the PVD coating.
Packaging: 10 pieces per box.
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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.