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 →