Mitsubishi DNMG150408-GK MC5015 Carbide Insert | MMC Japan
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DNMG150408-GK MC5015
Mitsubishi Materials | Next-Gen Cast Iron Machining Grade
The Mitsubishi DNMG150408-GK MC5015 is a high-tech 55° rhombic negative turning insert engineered for the high-speed machining of Cast Iron (K-category). Utilizing the advanced MC5015 Nano-Texture CVD coating, this insert offers extreme wear resistance and thermal stability. The GK chipbreaker is specifically designed for stable cast iron turning, providing excellent edge strength and effective chip control in gray and nodular iron applications.
Technical Specifications
| ISO Model (Metric) | DNMG150408-GK |
|---|---|
| ANSI Model (Inch) | DNMG 432-GK |
| Material Grade | MC5015 (Nano-Texture CVD) |
| Corner Radius | 0.8 mm (1/32") |
| Thickness | 4.76 mm (3/16") |
MC5015 Grade Technology
The MC5015 grade features Mitsubishi's Nano-Texture Technology. The crystal grains of the Al2O3 (Alumina) coating are oriented in the same direction, which significantly increases hardness and crater wear resistance. This makes it ideal for high-speed dry cutting where heat management is critical.
GK Chipbreaker Logic
The GK chipbreaker is specialized for cast iron. It features a robust land area that provides the cutting edge strength necessary to handle the abrasive nature of GCI (Gray Cast Iron) and NCI (Nodular Cast Iron), effectively preventing sudden edge chipping.
Recommended Cutting Parameters
| Material Group | Cutting Speed ($v_c$) | Feed Rate ($f$) |
|---|---|---|
| Gray Cast Iron (GCI) | 200 - 450 m/min | 0.15 - 0.45 mm/rev |
| Ductile Iron (FCD) | 150 - 300 m/min | 0.15 - 0.40 mm/rev |
INDUSTRIAL COMPATIBILITY
This insert fits all standard 15-size (IC 1/2") tool holders: DDJNR/L, DDNNN, or DDUNR/L.
VIEW COMPATIBLE HOLDERS →Metric vs. Inch Cross-Reference
| Feature | ISO (Metric): DNMG150408 | ANSI (Inch): DNMG 432 |
|---|---|---|
| Inscribed Circle (IC) | 12.7 mm | 1/2" |
| Thickness (S) | 4.76 mm | 3/16" |
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.