Mitsubishi CNMG120408-MS US735 Stainless Steel Turning Insert (10pcs)
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💰 Bulk savings 2-9 pcs · 6% OFF | 10+ pcs · 12% OFF
CNMG120408-MS US735
The Stainless Powerhouse | US735 Tough PVD | MS Chip Control Geometry
Optimized for Tough, Gummy Materials
US735 Grade (Impact & Thermal Specialist): The US735 is a premium PVD-coated grade designed to solve the most common problems in M-Class (Stainless Steel) machining. Its substrate is engineered for high impact strength, making it the top choice for interrupted cuts or applications where thermal cracking typically occurs. The thin, tough PVD coating allows the edge to remain sharp while resisting the chemical wear inherent in stainless alloys.
MS Chipbreaker (Stainless Logic): The MS geometry is specifically designed to handle the high ductility of stainless steel. It features a large rake angle and a unique chip-pocket design that forces chips to break even at lower feeds, preventing the dreaded "long stringers" that can damage workpieces and tool holders.
0.8mm (1/32") Balanced Radius: The 08 radius is the perfect "middle-ground" for any machine shop. It is strong enough for light-to-medium roughing and sharp enough to provide an excellent industrial surface finish on a wide variety of alloyed steels.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | CNMG120408-MS | 12.7 mm | 4.76 mm | 0.80 mm |
| Imperial | CNMG432-MS | 1/2" | 3/16" | 0.0315" (1/32") |
High-Toughness Cutting Parameters
*The US735 grade is optimized for reliability. Use flood coolant to prevent edge welding in stainless steel applications.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Austenitic Stainless (304/316) | 70 - 160 m/min | 0.10 - 0.30 mm/r | 0.50 - 3.50 mm |
| Alloy Steels (High Strength) | 100 - 180 m/min | 0.12 - 0.35 mm/r | 0.80 - 4.00 mm |
Compatible Tool Holders
Maximum rigidity is recommended for stainless steel. Fits DCLNR/L 12 and MCLNR/L 12 series holders:
Shop DCLNR 12 HoldersPro-Tip: US735 vs. VP15TF
US735 (The Tough Specialist): This is your primary choice for interrupted cuts and unstable machine conditions in stainless steel. It prioritizes toughness over pure speed.
VP15TF (The Speed Specialist): Switch to VP15TF for continuous, high-speed turning in stable conditions. VP15TF offers slightly higher wear resistance but is more prone to chipping in heavy interruptions.
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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.