Mitsubishi DCMT11T304 US735 Carbide Turning Insert for Stainless Steel (10pcs)
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DCMT11T304 US735
High-Toughness CVD | Stainless Steel Workhorse | 55° Diamond
Maximum Fracture Toughness for Stainless
US735 Grade (The Stainless Specialist): Mitsubishi’s US735 is a CVD-coated carbide grade engineered for high-impact resistance. It utilizes a specialized substrate that resists the thermal shock common in stainless steel machining. This grade is the premier choice for interrupted cuts, parts with heavy scale, or applications where tool chipping is a constant issue.
DCMT Geometry (Positive Chipbreaker): The 55-degree diamond shape with a positive rake angle effectively "slices" through gummy materials like 304 or 316 stainless. This reduces heat buildup at the cutting edge and prevents Built-up Edge (BUE), which is the leading cause of poor surface finish in stainless alloys.
0.4mm Versatile Radius: The 04 radius provides the ideal balance between tool life and surface finish (Ra). It is robust enough to handle fluctuating depths of cut while maintaining high-precision dimensional tolerances.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | DCMT11T304 | 9.525 mm | 3.97 mm | 0.40 mm |
| Imperial | DCMT32.51 | 3/8" | 5/32" | 0.0157" (1/64") |
Recommended Machining Parameters
*US735 thrives in medium speed ranges with stable feed rates to avoid work-hardening the material.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| 300 Series Stainless | 80 - 170 m/min | 0.08 - 0.20 mm/r | 0.30 - 2.00 mm |
| 400 Series Stainless | 100 - 200 m/min | 0.10 - 0.25 mm/r | 0.50 - 2.50 mm |
Compatible Tooling
Maximum performance when paired with SDJCR/L or SDUCR/L 11-series holders:
Shop SDJCR 11 HoldersPro-Tip: US735 vs. VP15TF Carbide
US735 (CVD): The impact champion. Use this grade for general stainless turning, interrupted cuts (hexagons/flats), and high-vibration setups. It is much more durable than PVD grades in unstable conditions.
VP15TF (PVD): The precision finisher. Use this for very small parts, light finishing passes, or when you need a razor-sharp edge for thin-walled tubes.
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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.