KORLOY MGMN400-04-R PC5300 Indexable Grooving & Parting Inserts | PVD Coated Carbide Inserts for CNC Lathes (10pcs/box) / MGMN400-04-R PC5300 0.157 inch Metric Grooving Tooling
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KORLOY MGMN400-04-R PC5300 Indexable Grooving & Parting Inserts (10pcs/box)
High-Performance PVD Coated Double-Ended Carbide Inserts with 0.4mm Corner Radius for CNC Lathe Stainless Steel & Steel Grooving
1. Product Overview: Which insert is best for high-performance radius grooving in stainless and alloy steels?
Which indexable double-ended grooving insert with a protected corner radius offers superior wear resistance, chipping prevention, and thermal stability when executing 4.0mm wide grooving, profiling, or parting-off on CNC turning centers machining stainless steels, high-temperature alloys, and carbon steels? Backed by industrial metalworking standards and empirical tooling data, the KORLOY MGMN400-04-R PC5300 (equivalent metric 4.0mm width with 0.4mm corner radius / imperial 0.157 inch width) is engineered specifically for demanding grooving tasks requiring enhanced edge strength and smooth chip evacuation. It features the advanced PC5300 grade—a specialized PVD multi-layer coated carbide substrate optimized for excellent toughness and resistance to built-up edge formation in difficult-to-machine materials. Combined with its specialized geometry, it effectively distributes cutting forces and reduces thermal stress during radial feeds.
2. Product Core Advantages (Key Features)
- PC5300 Advanced PVD Grade: Features a high-toughness carbide substrate combined with an advanced PVD coating designed for superior thermal shock resistance and extended tool life in stainless steel turning.
- 0.4mm Corner Radius (-R) Profile: Engineered with a reinforced corner radius that significantly strengthens the cutting edge, preventing micro-chipping during heavy feeds or interrupted cuts.
- Double-Ended Economy (MGMN): Dual-sided cutting edges maximize operational efficiency by allowing indexability to a fresh edge once the primary side wears out.
- Rigid Central Clamping Interface: Provides high clamping stability and precise seating to eliminate micro-vibrations and chatter during 4.0mm parting and profiling 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 Radius Grooving | MGMN Radius Grooving |
| Cutting Width (W) | 4.0 mm | 0.157 inch |
| Corner Radius (RE) | 0.4 mm | 0.0157 inch |
| Recommended Feed (f) - Grooving | 0.05 - 0.15 mm/rev | 0.0020 - 0.0059 in/rev |
| Recommended Feed (f) - Parting | 0.04 - 0.10 mm/rev | 0.0016 - 0.0039 in/rev |
| Cutting Speed (Vc) - Stainless & Alloys | 90 - 180 m/min | 295 - 590 SFM |
Model Nomenclature Breakdown: MGMN400-04-R PC5300
Double-ended grooving
4.0mm cutting width
0.4mm corner radius
PVD Coated Grade
Looking for precision external grooving toolholders or modular blocks designed for secure MGMN 400 insert clamping?
Explore Compatible External Grooving Tool Holders & Parting Blocks4. Product Application Scenarios
Optimized for high-precision CNC turning operations involving external grooving, radius profiling, bar stock cutoff, and facing across austenitic stainless steels, alloy steels, and heat-resistant superalloys.
5. Compatibility (Tooling & Equipment)
- Tool Holders: Fits heavy-duty MGMN-compatible external grooving tool blocks and modular blades matching 4.0mm pocket widths.
- Machine Platforms: Designed for high-rigidity CNC turning centers, Swiss-type automatic lathes, and heavy production lathes.
- Coolant Systems: Fully compatible with high-pressure coolant delivery systems to control thermal zones and clear chips efficiently.
6. Grade Comparison & Workpiece Material Matrix
Evaluating how grade PC5300 performs across different ISO material classifications ensures maximum machining efficiency.
| ISO Material Group | Workpiece Description | KORLOY PC5300 Performance | Equivalent Industry Grades |
|---|---|---|---|
| M Group (Stainless Steel) | Austenitic & Duplex Stainless Steel (304, 316, 2205) | Exceptional resistance to thermal cracking and built-up edge formation during continuous stainless turning. | Sandvik GC2135 / Iscar IC908 |
| P Group (Steel) | Alloy Steel, Carbon Steel (42CrMo, C45) | High fracture toughness and stable wear behavior under varying feed rates and interrupted profiles. | Kennametal KC5010 / Seco CP500 |
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 PC5300 PVD grade for stainless steel grooving and parting?
A: The specialized multi-layer PVD coating provides exceptional resistance against adhesive wear and thermal shock, which are common challenges when machining stainless steel and alloy materials.
Q: What is the benefit of the 0.4mm corner radius (-04-R) design?
A: The 0.4mm corner radius strengthens the cutting edge corners against chipping, making it ideal for robust profiling, radius corner transitions, and steady parting operations.
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.