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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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.