Mitsubishi DNMA150412 UC5115 Cast Iron Turning Insert | Flat Top
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DNMA150412 UC5115
Cast Iron Powerhouse | UC5115 CVD Coating | Robust Flat Top Design
Optimized for High-Speed Cast Iron Production
UC5115 Grade (CVD Coating): The UC5115 is a specialized CVD-coated carbide designed for the unique challenges of cast iron. It utilizes a thick $Al_2O_3$ (Aluminum Oxide) layer that acts as a thermal barrier, allowing the insert to maintain hardness even when the tool tip is glowing red. It provides world-class resistance to abrasion and crater wear in Gray Cast Iron (FC) and Ductile Iron (FCD).
DNMA Flat Top (High Edge Security): The "A" in DNMA designates a Flat Top geometry without a chipbreaker. Because cast iron produces short, crumbly chips, a chipbreaker is unnecessary and can actually weaken the cutting edge. The DNMA design provides a solid, reinforced edge that withstands the "sand-blasting" effect of abrasive iron skins.
1.2mm Radius (Maximum Strength): The "12" (3/64") nose radius is built for durability. It allows for high feed rates and provides excellent resistance to the heavy impact forces found when machining large industrial castings or interrupted surfaces.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | DNMA150412 | 12.7 mm | 4.76 mm | 1.20 mm |
| Imperial | DNMA433 | 1/2" | 3/16" | 0.0472" (3/64") |
Recommended Machining Parameters
*UC5115 is highly recommended for dry cutting to prevent thermal shock in cast iron.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Gray Cast Iron (FC) | 250 - 500 m/min | 0.20 - 0.50 mm/r | 1.00 - 4.50 mm |
| Ductile Iron (FCD) | 150 - 350 m/min | 0.15 - 0.40 mm/r | 1.00 - 3.50 mm |
Compatible Tool Holders
Maximum rigidity with 15-series DDJNR/L or DDUNR/L holders:
Shop DDJNR 15 HoldersPro-Tip: UC5115 vs. MC5015
UC5115 (The Classic Iron Master): Offers superior toughness. Choose this for large castings with heavy scale, interrupted cuts, or when the machine setup is not perfectly rigid.
MC5015 (The Speed Demon): Higher wear resistance but more brittle. Use MC5015 only for high-speed, stable continuous finishing of clean iron parts. For general workshop flexibility, UC5115 is the safer choice.
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