Mitsubishi CNMG120412 UC5115 CVD Carbide Insert for Heavy Cast Iron Roughing
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CNMG120412 UC5115
Roughing Powerhouse | UC5115 CVD Grade | 1.2mm Heavy-Duty Radius
Engineered for Maximum MRR
UC5115 Grade (CVD Coating): The UC5115 is a high-performance CVD-coated grade optimized for K-Class (Cast Iron) materials. It features a specialized thick Alumina layer that provides extreme heat resistance. This allows the insert to withstand the high temperatures generated when machining abrasive Gray Iron and high-strength Ductile Iron without losing edge hardness.
CNMG Geometry & Roughing Chipbreaker: This insert features a robust chipbreaker designed for medium-to-heavy roughing. The 80-degree diamond shape provides four usable cutting edges with high structural integrity, ensuring stable chip control even at deep depths of cut.
1.2mm (3/64") Heavy-Duty Radius: The larger 1.2mm radius is the key to this insert's success in roughing. It strengthens the corner against thermal cracking and chipping, enabling the operator to push higher Feed Rates (fn) while maintaining a stable cutting edge through surface scale and interruptions.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | CNMG120412 | 12.7 mm | 4.76 mm | 1.20 mm |
| Imperial | CNMG433 | 1/2" | 3/16" | 0.0472" (3/64") |
Recommended Roughing Parameters
*The 1.2mm radius generates significant radial forces. Ensure your setup is rigid and the machine has sufficient torque.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Gray Iron (GG25/Class 35) | 150 - 450 m/min | 0.25 - 0.60 mm/r | 1.20 - 5.50 mm |
| Ductile Iron (GGG60/80-55-06) | 120 - 320 m/min | 0.20 - 0.50 mm/r | 1.20 - 4.50 mm |
Compatible Tool Holders
Maximum performance with DCLNR/L 12 and MCLNR/L 12 series holders:
Shop DCLNR 12 HoldersPro-Tip: UC5115 vs. MC5015
UC5115: Use this for general-purpose roughing where toughness is required. It is highly reliable for interrupted cuts and ductile iron.
MC5015: Choose this for pure high-speed stable turning of gray iron where wear resistance (crater wear) is the primary concern and production volume is high.
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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.