Mitsubishi DCMT11T304-MV US735 Carbide Turning Insert for Stainless Steel
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DCMT11T304-MV US735
Stainless Steel Master | Tough CVD Coating | MV Versatile Geometry
Engineered for Impact and Thermal Stability
US735 Grade (CVD Toughness): The US735 is Mitsubishi's premier CVD-coated carbide for M-Class (Stainless Steel). It is specifically engineered to combat "Notch Wear" and "Thermal Cracking"—the two biggest killers of inserts in stainless steel. This grade is the first choice for interrupted cuts (cross-holes, keyways) where high toughness is non-negotiable.
MV Chipbreaker (Medium-V): The MV geometry is a versatile chipbreaker that excels in semi-finishing applications. It features a specialized rake angle that reduces cutting forces to prevent work-hardening of the stainless surface, while effectively breaking long, stringy chips into manageable "6-shapes."
0.4mm Radius (The Universal Standard): The "04" (1/64") nose radius offers the perfect balance. It provides enough edge strength to handle semi-roughing while remaining sharp enough to achieve high-quality surface finishes on final passes.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | DCMT11T304-MV | 9.525 mm | 3.97 mm | 0.40 mm |
| Imperial | DCMT32.51-MV | 3/8" | 5/32" | 0.0157" (1/64") |
Recommended Machining Parameters
*US735 requires flood coolant for maximum tool life. Optimized for interrupted cutting stability.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Austenitic (304/316) | 90 - 160 m/min | 0.08 - 0.20 mm/r | 0.30 - 1.50 mm |
| Martensitic (440C/420) | 110 - 180 m/min | 0.10 - 0.25 mm/r | 0.40 - 2.00 mm |
Compatible Tool Holders
Maximum stability for 11-series SDJCR/L or SDUCR/L holders:
Shop SDJCR 11 HoldersPro-Tip: US735 vs. NX2525
US735 (CVD Carbide): Your "Insurance Policy." Use this for stainless steel and any job with interrupted cuts or vibrating setups. It won't chip as easily as harder grades.
NX2525 (Cermet): Use this only for carbon steel finishing where you need a mirror-shine. Never use Cermet on stainless steel, as the material will "weld" to the tool edge instantly.
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