Mitsubishi CNMG120408-MA US735 Stainless Steel Turning Insert (10pcs)
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💰 Bulk savings 2-9 pcs · 6% OFF | 10+ pcs · 12% OFF
CNMG120408-MA US735
The Stainless Steel Specialist | US735 PVD Toughness | MA Medium Geometry
Superior Resistance to Work-Hardening
US735 Grade (Extreme PVD Toughness): The US735 is Mitsubishi’s premier PVD-coated grade specifically developed for Stainless Steel (M-Class) and Heat Resistant Super Alloys (S-Class). Unlike CVD coatings that can delaminate under high pressure, the US735 coating adheres aggressively to the substrate, providing exceptional resistance to thermal cracking and notch wear during interrupted cuts.
MA Chipbreaker (Universal Medium Cut): The MA geometry is engineered for a wide range of medium-duty applications. It features a specialized land design that balances low cutting force with edge stability, ensuring that chips are broken effectively even in gummy materials like 300-series stainless steel.
0.8mm (1/32") Balanced Radius: This industry-standard radius provides the highest versatility. It is robust enough to handle semi-roughing while achieving excellent surface finishes (Ra) during finishing passes, making it the one-size-fits-all solution for stainless steel production.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | CNMG120408-MA | 12.7 mm | 4.76 mm | 0.80 mm |
| Imperial | CNMG432-MA | 1/2" | 3/16" | 0.0315" (1/32") |
Recommended Cutting Parameters
*Stainless steel machining requires steady feed rates to stay below the work-hardened layer. Use flood coolant.
| Material Group | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Stainless Steel (304/316) | 70 - 160 m/min | 0.12 - 0.35 mm/r | 0.50 - 3.50 mm |
| High-Temp Alloys (Inconel/Titanium) | 25 - 55 m/min | 0.10 - 0.25 mm/r | 0.50 - 2.00 mm |
Compatible Tool Holders
Maximum performance for DCLNR/L 12 and MCLNR/L 12 series holders:
Shop DCLNR 12 HoldersPro-Tip: US735 vs. US7020
US735 (High-Impact Toughness): The definitive choice for interrupted cuts or low-rigidity setups where chipping is the primary failure mode.
US7020: Choose this grade for high-speed, continuous turning of stainless steel where you need higher wear resistance and can maintain a stable temperature at the cutting edge.
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This Mitsubishi insert is in stock. 24-hour quote response. ISO 9001 certified. Ships from Hangzhou in 3–7 days.
Technical FAQ & Buying Guide
When choosing CNC cutting tools, check the full model code, dimensions, grade and selected variant before ordering. Do not rely on the product image alone.
For carbide inserts, tool holders, drills and end mills, compare the mounting dimensions, connection type and manufacturer's specifications with your holder or machine. If you are unsure, share your existing part number and machining application with us before ordering.
Check the product listing for the selling unit, pack quantity and included components. If it is unclear whether the price is per piece or per pack, or whether a tool body and inserts are sold separately, contact us before purchasing.
Select cutting speed, feed rate and depth of cut using the relevant manufacturer's recommendations for your tool model, workpiece material, machine conditions and coolant method. The same settings are not suitable for every product or application.
Our automatic quantity discount is 6% off for 2–9 items and 12% off for 10 or more items, based on the total product quantity in the cart. Other offers may not combine with this discount; check the applicable offer conditions.
According to our shipping policy, orders are typically processed and shipped within 1–3 business days after confirmation. Delivery generally takes 5–20 business days, depending on your destination and shipping method. Customs clearance or unforeseen delays may affect delivery times. A tracking number is sent by email after shipment.