Mitsubishi DCMT11T308 UC5115 Carbide Turning Insert for Cast Iron (10pcs)
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DCMT11T308 UC5115
Cast Iron Heavy-Duty | UC5115 Wear-Resistant CVD | 0.8mm Radius
Engineered for High-Abrasive Cast Environments
UC5115 Grade (The K-Class Champion): The UC5115 is Mitsubishi's premier CVD-coated grade for cast iron turning. Unlike steel grades, UC5115 uses a specialized substrate and a thick, smooth Al2O3 + TiCN coating. This combination resists the abrasive "sandpaper" effect of graphite flakes in gray iron and the mechanical shock found in ductile (nodular) iron.
DCMT Geometry (Stability & Flow): The 55-degree diamond shape provides the structural integrity needed for semi-roughing. This positive geometry reduces the tendency for workpieces to vibrate, which is critical when turning large cast iron housings or engine components.
0.8mm Radius (High Edge Integrity): The "08" (1/32") radius is chosen for its strength. It allows for significantly higher feed rates ($f_n$) and provides better heat dissipation than the 0.4mm version. This makes it the preferred radius for semi-roughing and finishing where the tool must endure long cut times.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | DCMT11T308 | 9.525 mm | 3.97 mm | 0.80 mm |
| Imperial | DCMT32.52 | 3/8" | 5/32" | 0.0315" (1/32") |
Recommended Cutting Parameters
*UC5115 thrives in stable, high-speed CNC environments. Dry cutting is often preferred for cast iron.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Gray Cast Iron (FC300) | 180 - 450 m/min | 0.15 - 0.35 mm/r | 0.50 - 3.00 mm |
| Ductile Iron (FCD600) | 120 - 320 m/min | 0.12 - 0.30 mm/r | 0.50 - 2.50 mm |
Compatible Tool Holders
Maximum rigidity for 11-series pockets using SDJCR/L or SDUCR/L holders:
Shop SDJCR 11 HoldersPro-Tip: UC5115 vs. Steel Grades
UC5115 (Iron Specialist): Optimized for heat and abrasion. If you use this on Steel, the lack of "toughness" against chemical welding will cause the insert to crater prematurely.
US735 / UE6110: If you are switching from Cast Iron to Stainless or Carbon Steel, you must switch to these grades. They have the toughness and coating chemistry required for steel chip adhesion.
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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.