Mitsubishi SNMG120412-MA US735 Turning Insert | Stainless Steel Roughing
✓ In Stock & Fast Dispatch: Order processing: typically 1–3 business days after confirmation.
✓ Global Shipping: Delivery: generally 5–20 business days, depending on destination and shipping method.
✓ Guaranteed Quality: Check model, dimensions and compatibility before ordering. | Direct Factory Outlet
✓ Technical Support: Need grade selection help? Contact Engineer
💰 Bulk savings 2-9 pcs · 6% OFF | 10+ pcs · 12% OFF
SNMG120412-MA US735
Mitsubishi Materials | Heavy-Duty Strength for Stainless Steel & Interrupted Cuts
The Mitsubishi SNMG120412-MA US735 is a heavy-duty indexable carbide insert engineered for the most demanding stainless steel turning applications. Featuring a reinforced 1.2mm corner radius and the high-toughness US735 CVD coating, this insert is the industry's answer to interrupted cutting and roughing of difficult-to-machine alloys. It is specifically optimized for ISO M-class materials where edge security and thermal shock resistance are paramount.
Condition: 100% Original Mitsubishi | Box of 10 Inserts
ISO Designation Decoded
Square 90°
0° Relief
M-Class Tol.
Double Sided
12.7mm Size
4.76mm Thick
1.2mm Radius
Medium-Rough
Technical Specifications
| Dimension | Metric (ISO) | Inch (ANSI) Equivalent |
|---|---|---|
| Model Name | SNMG120412-MA | SNMG 433-MA |
| Inscribed Circle ($IC$) | 12.7 mm | 0.500" (1/2") |
| Thickness ($S$) | 4.76 mm | 0.187" (3/16") |
| Corner Radius ($RE$) | 1.2 mm | 0.047" (3/64") |
US735 Toughness Optimized Grade
The US735 grade is Mitsubishi's benchmark for machining stainless steel under heavy load. This CVD coated carbide substrate is specially formulated to resist thermal cracking and plastic deformation. Its superior coating lubricity prevents "sticky" chip adhesion, a common cause of edge chipping in austenitic stainless steels like 304 and 316.
MA Medium-Rough Chipbreaker
The MA chipbreaker is designed for medium-roughing applications. With its larger 1.2mm radius, this geometry supports high feed rates and significant depth of cut ($a_p$). It provides exceptional chip control by breaking tough, stringy stainless chips quickly, reducing heat buildup and ensuring stable CNC lathe operation.
Recommended Cutting Parameters
Optimized for Heavy Stainless Machining (US735)
| Material Group | Cutting Speed ($v_c$) | Feed Rate ($f$) | Depth of Cut ($a_p$) |
|---|---|---|---|
| 304/316 Stainless Steel | 80 - 180 m/min | 0.20 - 0.50 mm/rev | 1.5 - 4.5 mm |
| Duplex Stainless Steel | 60 - 130 m/min | 0.18 - 0.45 mm/rev | 1.5 - 4.0 mm |
HOLDER COMPATIBILITY
Matches with heavy-duty PSSNR/L, DSBNR/L, or MSKNR/L turning tool holders.
Shop Turning Holders →
Need Help With Mitsubishi Inserts?
Looking for a Mitsubishi equivalent, alternative grade, or sample catalog? Our CNC specialists have helped 50+ manufacturers in aerospace, automotive, and medical machining source the right tooling at 30–50% lower cost than OEM prices.
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.