KORLOY MGMN250-M PC9030 Indexable Grooving & Parting Inserts | PVD Coated Carbide Inserts for Stainless Steel & Alloy Steel CNC Lathes (10pcs/box) / MGMN250-M PC9030 0.098 inch Metric Grooving Tooling
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✓ Technical Support: Need grade selection help? Contact Engineer
KORLOY MGMN250-M PC9030 Indexable Grooving & Parting Inserts (10pcs/box)
High-Performance PVD Coated Carbide Inserts with 2.5mm Width & -M Medium Chipbreaker Geometry for CNC Lathe Stainless Steel & Alloy Steel Turning
1. Product Overview: Which insert is best for medium grooving, profile turning, and parting-off in stainless steel and alloy steels?
Which indexable grooving insert featuring a 2.5mm cutting width, an optimized -M medium chipbreaker geometry, and advanced metallurgical coatings offers superior edge toughness, thermal cracking resistance, and smooth chip curling when executing general grooving or parting-off on CNC turning centers machining austenitic stainless steels, heat-resistant alloys, and carbon steels? Supported by certified metalworking research and industrial tooling parameters, the KORLOY MGMN250-M PC9030 (equivalent metric 2.5mm width with -M chipbreaker / imperial 0.098 inch width) is engineered specifically for stable, versatile performance across varying feed rates. It utilizes the advanced PC9030 grade—a multi-layer PVD coated fine-grained carbide substrate optimized for interrupted cuts and sticky materials. Combined with its designated -M geometry, it guarantees excellent chip evacuation and low cutting resistance.
2. Product Core Advantages (Key Features)
- PC9030 Advanced PVD Grade: Features a tough micro-grain carbide substrate paired with a high-adhesion PVD TiAlN coating that minimizes friction, reduces built-up edge (BUE), and excels in stainless steel turning.
- -M Medium Chipbreaker Geometry: Designed with a versatile positive rake angle and specialized chip-forming pockets that deliver uniform chip control across diverse feed rates.
- 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 costs.
- Secure Pocket Clamping: Engineered to fit securely into standard external grooving blocks, eliminating micro-motion and chatter during heavy turning 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 Grooving & Parting | MGMN Grooving & Parting |
| Cutting Width (W) | 2.5 mm | 0.098 inch |
| Chipbreaker & Insert Geometry | -M (Medium Chipbreaker) | -M Medium Profile |
| Recommended Feed (f) - Grooving | 0.06 - 0.16 mm/rev | 0.0024 - 0.0063 in/rev |
| Recommended Feed (f) - Parting | 0.04 - 0.10 mm/rev | 0.0016 - 0.0039 in/rev |
| Cutting Speed (Vc) - Stainless & Alloy Steels | 90 - 180 m/min | 295 - 590 SFM |
Model Nomenclature Breakdown: MGMN250-M PC9030
Double-ended grooving
2.5mm cutting width
Medium 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 medium-width external grooving, contour profiling, face grooving, and clean bar stock cutoff across austenitic stainless steels, alloy 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, Swiss-type automatic lathes, and multi-axis turning cells.
- Coolant Systems: Highly compatible with high-pressure coolant delivery to suppress thermal deformation in stainless steel machining.
6. Grade Comparison & Workpiece Material Matrix
Evaluating how grade PC9030 performs across different ISO material classifications ensures maximum tool durability.
| ISO Material Group | Workpiece Description | KORLOY PC9030 Performance | Equivalent Industry Grades |
|---|---|---|---|
| M Group (Stainless Steel) | Austenitic & Martensitic Stainless (304, 316L) | PVD TiAlN coating prevents edge chipping and built-in-edge formation during sticky stainless steel turning. | Sandvik GC2135 / Kennametal KCU25 |
| P Group (Steel) | Low Carbon Steel, Alloy Steel (1045, 4140) | Tough substrate handles intermittent cutting forces and general steel profiling with consistent wear patterns. | Iscar IC908 / Seco MP900 |
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 advantage of the -M medium chipbreaker geometry?
A: The -M chipbreaker offers a versatile balance of sharp cutting action and robust edge strength, ensuring effective chip curling across a wide range of feed rates in stainless steel.
Q: Why is PC9030 ideal for alloy and stainless steel grooving?
A: PC9030 combines a fracture-resistant micro-substrate with a slick PVD coating that prevents material adhesion and thermal cracking common in gummy alloy turning.
Q: How many inserts are supplied in a single 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.