Mitsubishi CCMT120404 UE6020 CVD Coated Carbide Turning Insert (10pcs)
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CCMT120404 UE6020
High-Stability Steel Turning | CVD Coated Carbide | 0.4mm Radius
Material Science & Geometry
UE6020 Grade (CVD Coated Carbide): The UE6020 is a high-performance **CVD (Chemical Vapor Deposition)** coated carbide specifically optimized for Steel Machining (ISO P20-P35). It features a multi-layer coating system: TiCN + Al2O3 + TiN. The thick Aluminum Oxide (Al2O3) layer acts as a thermal shield, protecting the carbide substrate from extreme heat during heavy-duty turning, ensuring maximum tool life in carbon and alloy steels.
CCMT 12 Size (Structural Mass): The 12mm size class is designed for larger SCLCR 12 tool holders and heavy boring bars. The larger surface area of the insert allows for better heat dissipation and greater resistance to the cutting forces encountered in deeper finishing and semi-finishing passes. The 0.4mm radius ensures a sharp, clean cut with low radial pressure.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | CCMT120404 | 12.70 mm | 4.76 mm | 0.40 mm |
| Imperial | CCMT431 | 0.500" (1/2") | 0.187" (3/16") | 0.0157" (1/64") |
Recommended Cutting Parameters
*The 1204 thickness allows for more aggressive depths of cut compared to the 09T3 series. Use coolant for optimal chip control.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Carbon Steel (1045) | 160 - 320 m/min | 0.08 - 0.25 mm/r | 0.40 - 2.50 mm |
| Alloy Steel (4140) | 140 - 280 m/min | 0.05 - 0.20 mm/r | 0.30 - 2.00 mm |
Required Tool Holder
Maximum stability for SCLCR/L 12 external tools and large-diameter boring bars:
Shop SCLCR 12 HoldersGrade Comparison: UE6020 vs NX2525
UE6020 (CVD Carbide): The best choice for Productivity & Durability in steel. Use this for general turning where you need a tool that can "survive" different steel grades and higher depths of cut.
NX2525 (Cermet): Choose cermet only for High-Gloss Finishing. It is more brittle than UE6020 but provides a "mirror" finish that carbide cannot match. Not recommended for heavy semi-roughing.
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This Mitsubishi insert is in stock. 24-hour quote response. ISO 9001 certified. Ships from Hangzhou in 3–7 days.
Technical FAQ & Buying Guide
When choosing CNC cutting tools, check the full model code, dimensions, grade and selected variant before ordering. Do not rely on the product image alone.
For carbide inserts, tool holders, drills and end mills, compare the mounting dimensions, connection type and manufacturer's specifications with your holder or machine. If you are unsure, share your existing part number and machining application with us before ordering.
Check the product listing for the selling unit, pack quantity and included components. If it is unclear whether the price is per piece or per pack, or whether a tool body and inserts are sold separately, contact us before purchasing.
Select cutting speed, feed rate and depth of cut using the relevant manufacturer's recommendations for your tool model, workpiece material, machine conditions and coolant method. The same settings are not suitable for every product or application.
Our automatic quantity discount is 6% off for 2–9 items and 12% off for 10 or more items, based on the total product quantity in the cart. Other offers may not combine with this discount; check the applicable offer conditions.
According to our shipping policy, orders are typically processed and shipped within 1–3 business days after confirmation. Delivery generally takes 5–20 business days, depending on your destination and shipping method. Customs clearance or unforeseen delays may affect delivery times. A tracking number is sent by email after shipment.