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 →