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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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.