Mitsubishi TNMA160404 UC5115 | CVD Carbide Cast Iron Insert
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TNMA160404 UC5115
Mitsubishi Materials | The Cast Iron Machining Powerhouse
The Mitsubishi TNMA160404 UC5115 is a heavy-duty CVD coated carbide insert engineered specifically for the high-speed turning of cast iron. Featuring a flat-top (No Chipbreaker) design, it provides maximum edge strength for continuous and heavy-duty cuts. The UC5115 grade is the industry benchmark for stability when machining Gray Cast Iron (FC) and Ductile Cast Iron (FCD), making it an essential long-tail industrial tool for engine blocks, brake discs, and industrial pumps.
CVD Coated | K-Class Specialist | Flat Top Edge Strength
Code Identification Breakdown
Triangular Shape
0° Relief Angle
M-Class Tolerance
Flat Top (No Hole)
16.5mm Edge
4.76mm Thick
0.4mm Radius
Global Standard Reference
| Attribute | ISO (Metric) Model | ANSI (Inch) Equivalent |
|---|---|---|
| Model ID | TNMA160404 | TNMA 331 |
| Inscribed Circle (IC) | 9.525 mm | 0.375" |
| Nose Radius (RE) | 0.4 mm | 0.016" |
UC5115 CVD Grade
The UC5115 grade features a thick alumina ($Al_2O_3$) coating layer that provides extreme heat insulation. This CVD coated carbide is designed to withstand the abrasive nature of cast iron machining. It maintains high hardness even at elevated temperatures, ensuring long tool life in high-speed, continuous cutting environments.
TNMA Geometry (Flat Top)
Unlike chipbreaker types, the TNMA flat-top insert offers a robust cutting edge that resists chipping. While it does not facilitate chip breaking in ductile materials, it is the preferred indexable turning insert for cast iron, which naturally produces short, brittle chips. The flat top ensures maximum stability under high cutting forces.
Recommended Cutting Parameters
| Material Group | Speed ($v_c$) | Feed ($f$) | DOC ($a_p$) |
|---|---|---|---|
| Gray Cast Iron (FC250/300) | 200 - 450 m/min | 0.15 - 0.45 mm/rev | 0.5 - 4.0 mm |
| Ductile Iron (FCD450+) | 150 - 300 m/min | 0.15 - 0.40 mm/rev | 0.5 - 3.5 mm |
TOOL HOLDER COMPATIBILITY
Designed for high-performance MTJNR/L or WTJNR/L top-clamp tool holders (Size 16).
View Compatible Holders →
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.