KORLOY MRMN200-M PC9030 Indexable Grooving & Parting Inserts | MRMN Series PVD Coated Carbide Inserts for CNC Lathes (10pcs/box) / MRMN200-M PC9030 0.079 inch Metric Grooving Tooling
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✓ Technical Support: Need grade selection help? Contact Engineer
KORLOY MRMN200-M PC9030 Indexable Grooving & Parting Inserts (10pcs/box)
High-Performance PVD Coated Carbide Inserts for CNC Lathe Stainless Steel Grooving, Parting-Off, and Precision Turning Applications
1. Product Overview: Which insert is best for stainless steel parting and 2.0mm grooving applications?
Which indexable grooving insert ensures maximum wear resistance, thermal shock resistance, and smooth chip evacuation when executing parting-off or 2.0mm grooving on CNC turning centers working with stainless steel and alloy steels? Verified by industrial metalworking standards, the KORLOY MRMN200-M PC9030 is engineered specifically for challenging stainless steel, heat-resistant alloy, and carbon steel machining tasks. It features the advanced PC9030 grade—a specialized PVD-coated carbide substrate optimized for high fracture toughness and resistance to built-up edge (BUE) under continuous or variable feed conditions. Combined with its precision M-type chipbreaker geometry, it controls chip formation and ensures reliable chip flow during deep grooving passes.
2. Product Core Advantages (Key Features)
- PC9030 Advanced PVD Grade: Combines a high-toughness carbide substrate with a smooth PVD nano-coating designed to reduce friction and prevent chemical wear in stainless steel turning.
- M-Type Chipbreaker Geometry: Designed to form tight, manageable chips that evacuate smoothly from 2.0mm wide grooves without crowding the cutting zone.
- Rigid Locating Interface: Provides exceptional clamping security and precise repeatability under heavy radial and axial cutting loads.
- Superior Built-Up Edge Resistance: Resists adhesive wear and micro-chipping during difficult parting operations on gummy materials.
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 | MRMN Grooving & Parting | MRMN Grooving & Parting |
| Cutting Width ($W$) | 2.0 mm | 0.079 inch (~5/64") |
| Recommended Feed ($f$) - Grooving | 0.02 - 0.06 mm/rev | 0.0008 - 0.0024 in/rev |
| Recommended Feed ($f$) - Parting | 0.02 - 0.05 mm/rev | 0.0008 - 0.0020 in/rev |
| Cutting Speed ($Vc$) - Stainless Steel | 90 - 180 m/min | 300 - 590 SFM |
Model Nomenclature Breakdown: MRMN200-M PC9030
Grooving/Part geometry
2.0mm cutting width
Medium chipbreaker
PVD Coated Tough Grade
Looking for precision external grooving toolholders or parting blades designed for secure MRMN 200 insert clamping?
Explore Compatible External Grooving Tool Holders & Parting Blades4. Product Application Scenarios
Designed for high-reliability CNC lathe operations including external OD grooving, face grooving, bar stock parting-off, and profiling across austenitic stainless steels, precipitation hardening steels, and alloy steels under demanding coolant or production conditions.
5. Compatibility (Tooling & Equipment)
- Tool Holders: Fits standard MRMN-type external grooving tool blocks and parting blades matching 2.0mm pocket size specifications.
- Machine Platforms: Compatible with heavy-duty CNC turning centers, Swiss-type lathes, and automatic bar machines.
- Coolant Systems: Highly compatible with high-pressure flood coolant injection to control thermal build-up during stainless steel cutting.
6. Grade Comparison & Workpiece Material Matrix
Evaluating how grade PC9030 performs across different ISO material classifications ensures maximum machining reliability.
| ISO Material Group | Workpiece Description | KORLOY PC9030 Performance | Equivalent Industry Grades |
|---|---|---|---|
| M Group (Stainless Steel) | Austenitic & Duplex Stainless Steel (304, 316, 2205) | Specialized PVD grade optimized for excellent thermal crack resistance and prevention of built-up edge in stainless turning. | Sandvik GC2015 / Iscar IC908 |
| S Group (Superalloys) | Titanium Alloys, Inconel, Heat-Resistant Steels | Provides high wear resistance and edge strength under high thermal loads typical of aerospace alloy machining. | Kennametal KCU25 / Kyocera PR930 |
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 is grade PC9030 recommended over CVD grades for stainless steel grooving?
A: PC9030 uses an advanced PVD coating that provides a smoother rake face and superior resistance to chemical wear and built-up edge, which are common failure modes in stainless steel machining.
Q: How should feed rate be handled when breaking through the center during part-off with a 2.0mm insert?
A: It is recommended to reduce the feed rate by 40% when the insert reaches the last 0.5mm of the center axis to eliminate burrs and protect the insert tip from impact shock.
Q: How many inserts are packaged per 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.