Mitsubishi CNMG120404-MS UE6020 Steel Finishing Insert (10pcs)
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CNMG120404-MS UE6020
Steel Finishing Specialist | UE6020 Tough CVD | MS Precision Geometry
Precision Performance for Steel Applications
UE6020 Grade (The Versatile Toughness): The UE6020 is a specialized CVD-coated grade optimized for P-Class (Steel). It provides an excellent balance of wear resistance and fracture toughness. This grade is particularly effective in general turning where the machine setup may not be perfectly rigid, or when encountering light interruptions in the cut.
MS Chipbreaker (The Sharp Edge): The MS geometry is a high-sharpness chipbreaker designed specifically for finishing. It features a positive rake angle that reduces cutting forces and minimizes heat generation at the tip. This is critical for maintaining dimensional accuracy and achieving a superior surface finish on soft and medium-carbon steels.
0.4mm (1/64") Precision Radius: The small corner radius is the secret to high-precision work. It reduces radial cutting pressure, which prevents vibration (chatter) on slender workpieces or thin-walled tubes, allowing for exceptionally clean finishes.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | CNMG120404-MS | 12.7 mm | 4.76 mm | 0.40 mm |
| Imperial | CNMG431-MS | 1/2" | 3/16" | 0.0157" (1/64") |
Recommended Cutting Parameters
*Optimized for finishing. Use coolant to maximize surface quality and prolong PVD/CVD life.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Carbon Steel (1045) | 180 - 320 m/min | 0.05 - 0.20 mm/r | 0.20 - 1.50 mm |
| Alloy Steel (4140) | 150 - 280 m/min | 0.08 - 0.18 mm/r | 0.20 - 1.20 mm |
Recommended Tool Holders
Ensure high precision with DCLNR/L 12 series external holders:
Shop DCLNR 12 HoldersPro-Tip: UE6020 vs. MC6015
UE6020 (The Tough One): Use this grade for general-purpose steel machining. It is more forgiving than MC6015 and better for older machines or less stable setups.
MS vs. MA Chipbreaker: Always choose MS for final finishing where depth of cut is shallow. If you need to do light roughing or medium cutting, the MA chipbreaker is a better fit.
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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.