Mitsubishi CCMT120412 UE6020 Carbide Turning Insert 1.2mm Radius (10pcs)
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CCMT120412 UE6020
Heavy-Duty Turning | CVD Coated Carbide | 1.2mm Radius
Material Science & Edge Geometry
UE6020 Grade (CVD Coated Carbide): The UE6020 is a premier **CVD (Chemical Vapor Deposition)** grade designed for **Steel Machining (ISO P20-P35)**. It features a thick, multi-layer **TiCN + Al2O3 + TiN** coating. The Aluminum Oxide layer provides an industry-leading thermal barrier, allowing the insert to withstand the intense heat generated by high-feed rates on carbon and alloy steels.
1.2mm Radius (The Heavy-Duty Specialist): This is the largest standard radius for the CCMT 12 size. A **1.2mm (3/64") radius** distributes cutting forces over a wider area, drastically increasing edge life and allowing for much higher **feed per revolution (fn)**. It is ideal for workpieces with surface scale or when machining large diameters where tool pressure is less of a concern than edge wear.
Metric vs. Imperial Specifications
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | CCMT120412 | 12.70 mm | 4.76 mm | 1.20 mm |
| Imperial | CCMT433 | 0.500" (1/2") | 0.187" (3/16") | 0.0472" (3/64") |
Heavy-Duty Cutting Parameters
*The 1.2mm radius generates higher radial force. Ensure your machine and tool holder (SCLCR 12) have maximum rigidity.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Carbon Steel (1045) | 140 - 320 m/min | 0.15 - 0.45 mm/r | 0.60 - 3.00 mm |
| Alloy Steel (4140) | 120 - 260 m/min | 0.12 - 0.35 mm/r | 0.60 - 2.50 mm |
Recommended Tool Holder
Maximum stability for SCLCR/L 12 external tools and large-diameter S-SCLCR boring bars:
Shop SCLCR 12 HoldersPro-Tip: When to use CCMT120412
UE6020 (CVD Carbide): This is your Production Beast. While a 0.4mm radius (120404) provides a finer finish at low feeds, the 1.2mm radius (120412) is designed for Bulk Material Removal and heavy semi-finishing where the goal is maximum "Uptime."
Surface Finish Tip: To achieve a good finish with a 1.2mm radius, you must increase your feed rate. If the feed is too low, the insert will rub rather than cut, leading to vibration and premature wear.
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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.