Mitsubishi DCMT070204-MV US735 Insert for Stainless Steel Turning
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DCMT070202-MV US735
Stainless Steel Specialist | Tough CVD Coating | 0.2mm Precision Radius
Engineered for Difficult-to-Cut Materials
US735 Grade (Tough CVD): The US735 is Mitsubishi's premier grade for Stainless Steel. It features a specialized CVD coating designed to prevent thermal cracking and notch wear. This grade is highly recommended for "unstable" conditions, such as interrupted cuts or when the workpiece material is particularly gummy (e.g., 304, 316, or Duplex Stainless).
MV Chipbreaker (Medium-V Finishing): The MV geometry is a versatile finishing-to-medium chipbreaker. It provides excellent chip control across a range of depths ($Ap$), effectively breaking long stringy chips that are common when machining stainless steel, thereby protecting your workpiece and the tool holder.
0.2mm Nose Radius: The "02" radius is designed for ultra-precision. It generates minimal radial cutting pressure, making it the perfect choice for thin-walled parts, small diameters, or boring applications where vibration must be strictly controlled.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | DCMT070202-MV | 6.35 mm | 2.38 mm | 0.20 mm |
| Imperial | DCMT21.50.5-MV | 1/4" | 3/32" | 0.0078" (1/128") |
Recommended Machining Parameters
*US735 is optimized for toughness. Use lower speeds compared to PVD grades in dry conditions, or flood coolant for max life.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| 304/316 Stainless Steel | 80 - 150 m/min | 0.04 - 0.12 mm/r | 0.15 - 1.20 mm |
| Duplex / Tough Alloys | 60 - 120 m/min | 0.03 - 0.10 mm/r | 0.15 - 1.00 mm |
Compatible Tool Holders
Maximum performance with 07-series SDJCR/L or SDUCR/L holders:
Shop 07 Series HoldersPro-Tip: US735 vs. VP15TF
US735 (CVD): Choose this for stability. If your machine isn't perfectly rigid or if you have interrupted cuts (like keyways), the US735 is much more resistant to chipping.
VP15TF (PVD): Switch to VP15TF for continuous finishing at higher speeds on small parts where a razor-sharp edge is more critical than raw toughness.
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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.