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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