Mitsubishi TNMG160404-MA US735 | Stainless Steel Turning Insert
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TNMG160404-MA US735
Mitsubishi Materials | The Stainless Steel Toughness Specialist
The Mitsubishi TNMG160404-MA US735 is a high-toughness CVD coated carbide insert engineered specifically for the challenging task of stainless steel turning. Utilizing the US735 grade, which is renowned for its resistance to thermal cracking and adhesive wear, this insert excels in interrupted cuts. As a vital long-tail precision tool, it combines the versatile MA chipbreaker to provide superior chip control in medium-range cutting depths.
Anti-Adhesion CVD | Medium Cutting MA | Stainless Specialist
Code Identification Breakdown
Triangular Shape
0° Relief Angle
M-Class Tolerance
Cylindrical Hole
16.5mm Edge
4.76mm Thick
0.4mm Radius
Chipbreaker
Metric & ANSI Reference
| Specification | ISO (Metric) | ANSI (Inch) Equivalent |
|---|---|---|
| Model ID | TNMG160404-MA | TNMG 331 MA |
| Inscribed Circle | 9.525 mm | 0.375" |
| Nose Radius | 0.4 mm | 0.016" |
US735 CVD Grade
The US735 grade is Mitsubishi's ultimate toughness grade for stainless steels (M30-M40). It features a PVD/CVD coating balance that prevents the "gummy" material from sticking to the edge. This indexable turning insert is the first choice for CNC machining where vibration or interruptions occur.
MA Chipbreaker Geometry
The MA chipbreaker is a medium-cutting geometry designed for versatility. It provides excellent chip breaking across a wide range of feed rates and depths of cut. Its sharp yet reinforced edge prevents built-up edge (BUE), which is common when machining austenitic stainless steels like 304 and 316.
Recommended Cutting Parameters
| Material Group | Speed ($v_c$) | Feed per Rev ($f$) | DOC ($a_p$) |
|---|---|---|---|
| Austenitic Stainless (304/316) | 80 - 180 m/min | 0.10 - 0.25 mm/rev | 0.5 - 3.0 mm |
| Duplex Stainless Steel | 60 - 120 m/min | 0.10 - 0.20 mm/rev | 0.5 - 2.5 mm |
TOOL HOLDER COMPATIBILITY
Optimized for standard MTJNR/L or WTJNR/L external turning tool holders (Size 16).
View Size 16 Tool Holders →
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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.