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 →
Technical FAQ & Buying Guide
Absolutely. Our CNC carbide inserts (including CNMG, WNMG, DNMG, and APMT series) are manufactured strictly adhering to international ISO/ANSI specifications. A CNMG 120408 from OYYU BEYOND will flawlessly fit any standard turning tool holder or indexable tool from major global brands like Sandvik Coromant, Kennametal, Iscar, Walter, or SECO, providing a highly cost-effective premium alternative without sacrificing tolerance or tool life.
We offer optimized CVD and PVD multi-layer coatings for different ISO material groups:
- For Carbon/Alloy Steel (ISO P): Choose our thick multi-layer CVD coated grades (e.g., Al2O3 + TiN). They provide exceptional crater wear resistance and thermal barriers during high-speed dry or wet roughing.
- For Stainless Steel (ISO M): Choose our nano-structured PVD coated grades with sharp, positive chipbreakers (like -TM or -MA). This combination prevents work hardening and effectively controls sticky chips.
The optimal cutting parameters vary depending on the workpiece hardness and operation type:
- For General Steel Turnings: Recommended cutting speed ($V_c$) ranges from 150 to 280 m/min, with a feed rate ($f$) of 0.15 to 0.45 mm/rev.
- For Stainless Steel Finishing: Recommended cutting speed ($V_c$) is 120 to 200 m/min, with a feed rate ($f$) of 0.10 to 0.25 mm/rev.Always adjust parameters based on early wear patterns: increase $V_c$ if built-up edge occurs, or reduce $V_c$ if severe flank wear is observed.
Yes, we support machine shops, distributors, and global buyers with tiered wholesale pricing and competitive volume discounts. We also provide OEM custom manufacturing solutions for tool holders and carbide inserts based on your technical drawings. Contact our team to request a quick B2B quotation.
We provide secure worldwide express shipping (via DHL, FedEx, and UPS) with specialized, vibration-proof industrial packaging to ensure tools arrive in perfect condition. In-stock items are dispatched within 24-48 hours, while custom or bulk orders typically have a stable lead time of 15-25 days.
All our cutting tools and tool holders are manufactured strictly in accordance with ISO 9001 and international industrial standards. Every batch undergoes 100% rigorous quality control testing using high-precision optical measuring equipment to ensure reliable tool life and stable performance in continuous mass production.