Mitsubishi VNMG160404-GK MC5015 Carbide Insert | VNMG 331
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Mitsubishi VNMG160404-GK MC5015
High-Speed CVD Grade for Gray & Ductile Cast Iron Turning
The Mitsubishi VNMG160404-GK MC5015 is a high-performance 35° rhombic negative-type carbide turning insert. Engineered specifically for the high-speed machining of cast iron, the MC5015 grade features an advanced CVD coating that offers extreme wear resistance. This VNMG 331-GK ANSI equivalent is the professional choice for CNC lathe finishing and medium cutting where dimensional stability and long tool life are mandatory.
Technical Nomenclature Explained
Understanding the precision behind the VNMG160404-GK identification code:
| Code | Detailed Specification |
|---|---|
| V | Shape: 35° Rhombic (Diamond) |
| N | Clearance Angle: 0° (Negative) |
| M | Tolerance Class: Medium Precision Ground |
| G | Feature: Double-Sided with Hole |
| 16 | Size: ~16mm Cutting Edge Length |
| 04 | Thickness: 4.76mm |
| 04 | Nose Radius: 0.4mm (Fine Finishing) |
| GK | Chipbreaker: Cast Iron Specific (High Edge Strength) |
Global Interchangeability: ISO vs. ANSI
This VNMG insert is standardized for global CNC machining centers:
- ISO (Metric): VNMG160404-GK
- ANSI (Imperial): VNMG 331-GK
MC5015 Grade & GK Breaker Details
MC5015 CVD Grade: The MC5015 is a specialized CVD coated carbide designed for the high-speed turning of cast iron. It features a thick Al2O3 (Alumina) coating that provides exceptional thermal protection and prevents flank wear even at elevated cutting temperatures typical of gray cast iron production.
GK Chipbreaker Geometry: The GK breaker is specifically optimized for K-class (Cast Iron) materials. It features a robust cutting edge that resists the abrasive nature of cast iron chips, ensuring stable chip control and preventing edge chipping during medium-range cutting operations.
Cutting Parameters (Recommended)
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (f) | Depth of Cut (ap) |
|---|---|---|---|
| Gray Cast Iron (FC) | 200 - 600 m/min | 0.10 - 0.35 mm/rev | 0.5 - 3.0 mm |
| Ductile Cast Iron (FCD) | 150 - 400 m/min | 0.10 - 0.30 mm/rev | 0.5 - 2.5 mm |
System Integration
For maximum rigidity and precision, use this VNMG insert with high-quality tool holders.
Shop Compatible DVJNR/L Tool HoldersPro-Tip: Grade Comparison
MC5015 is the ultimate choice for high-speed finishing of cast iron. If your application involves heavy interrupted cutting, consider MC5005 for even higher wear resistance. If you are machining steel instead of cast iron, we recommend the UE6110 or UE6020 grades for optimal performance.
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.