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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