Mitsubishi DCMT070204 US735 Stainless Steel Turning Insert (10pcs)
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DCMT070204 US735
Stainless Specialist | Tough CVD Grade | 55° Diamond Geometry
The "Stainless Steel Workhorse"
US735 Grade (Impact-Resistant CVD): The US735 is Mitsubishi’s premier grade for austenitic and martensitic stainless steels. It features a thick, thermally stable TiCN+Al2O3 CVD coating. Unlike brittle finishing grades, US735 is optimized for shock resistance, making it the top choice for interrupted cuts or parts with pre-existing holes/keyways.
Positive DCMT Geometry: The 55-degree diamond shape with a 7° relief angle creates a sharp, positive cutting action. This "slices" through gummy materials like 304 and 316 stainless steel, preventing the built-up edge (BUE) that often leads to poor surface finish and sudden tool failure.
0.4mm Versatile Radius: The "04" (1/64") radius is the industry standard for general finishing. It provides a robust cutting edge that resists thermal cracking while being sharp enough to achieve high-precision Ra surface values.
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") |
Expert Machining Parameters
*US735 is designed for toughness. Use these ranges for stable machining of tough alloys.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Stainless Steel (304/316) | 70 - 150 m/min | 0.05 - 0.20 mm/r | 0.20 - 1.50 mm |
| Duplex Stainless Steel | 50 - 100 m/min | 0.05 - 0.15 mm/r | 0.20 - 1.20 mm |
Compatible Tool Holders
Maximum rigidity for stainless work with SDJCR or SDUCR 07 holders:
Shop 07 Series HoldersPro-Tip: US735 vs. VP15TF
US735 (CVD): Optimized for heat resistance and high toughness. Choose this for general stainless turning and interrupted cuts where the tool takes a beating.
VP15TF (PVD): A sharper edge. Choose this for very light finishing passes, small components, or when machining exotic heat-resistant alloys (Inconel/Titanium) at lower speeds.
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