Mitsubishi DCMT070204 UE6020 Carbide Turning Insert for Steel (10pcs)
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DCMT070204 UE6020
Universal Steel Specialist | UE6020 Balanced CVD | 55° Diamond Geometry
Balanced Performance for Steel Alloys
UE6020 Grade (The Industry Standard): The UE6020 is Mitsubishi’s most popular CVD grade for steel turning. It features a specialized TiCN + Al2O3 + TiN multi-layer coating. This design protects the cutting edge from the high temperatures of high-speed turning while the internal substrate provides enough toughness to prevent chipping during light interrupted cuts.
DCMT Geometry (Positive Rake): The 55-degree diamond shape with a 7-degree relief angle is the universal choice for profiling. The positive rake reduces cutting forces, ensuring that heat is carried away by the chip, which protects the part from thermal distortion and improves surface quality.
0.4mm Precision Radius: The "04" (1/64") radius is engineered for precision. It minimizes radial cutting pressure—preventing vibration in small components—while remaining robust enough for semi-finishing passes in carbon steels like 1018 or 1045.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | DCMT070204 | 6.35 mm | 2.38 mm | 0.40 mm |
| Imperial | DCMT21.51 | 1/4" | 3/32" | 0.0157" (1/64") |
Recommended Machining Parameters
*UE6020 is highly stable. For best surface finish, maintain cutting speeds above 150 m/min.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Mild Steel (Low Carbon) | 180 - 320 m/min | 0.05 - 0.20 mm/r | 0.20 - 1.50 mm |
| Alloy Steel (4140/SCM440) | 150 - 280 m/min | 0.05 - 0.15 mm/r | 0.20 - 1.20 mm |
Compatible Tool Holders
Maximum performance when paired with SDJCR or SDUCR 07 holders:
Shop 07 Series HoldersPro-Tip: UE6020 vs. US735
UE6020 (Steel Specialist): Best for high-volume carbon and alloy steel production. It has superior wear resistance for longer continuous runs.
US735 (Stainless Specialist): If you switch to 304 or 316 Stainless Steel, or if your cut is heavily interrupted, use US735. It has higher impact toughness than UE6020.
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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.