Mitsubishi TNMG160408L-ES US735 | Left-Hand Stainless Steel Insert
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TNMG160408L-ES US735
Mitsubishi Materials | The Left-Hand Specialist for Stainless Semi-Finishing
The Mitsubishi TNMG160408L-ES US735 is a high-toughness Left-Hand (L) variant of the industry-standard TNMG series. Specifically engineered for stainless steel turning, the US735 grade utilizes a specialized CVD coating that excels in interrupted cuts. The ES chipbreaker is the master of semi-finishing, providing superior chip control and heat dissipation in gummy materials like SUS304 and SUS316.
Left-Hand Orientation | Semi-Finishing Range | High Thermal Shock Resistance
Model Code Identification
Triangular
0° Relief
Tolerance
Hole/Chip
16.5mm Edge
4.76mm Thick
0.8mm Rad
Left-Hand
Finish-Semi Breaker
ISO (Metric) vs ANSI (Inch) Standards
| Tech Spec | ISO Model (Metric) | ANSI Model (Inch) |
|---|---|---|
| Model ID | TNMG160408L-ES | TNMG 332L ES |
| Inscribed Circle | 9.525 mm | 0.375" (3/8") |
| Nose Radius | 0.8 mm | 0.031" (1/32") |
US735 Grade Technology
The US735 grade is a specialized CVD carbide designed for P-M-K applications, specifically targeting M30-M40 stainless steel. It provides extreme resistance to built-up edge (BUE) and mechanical shocking, making it an elite long-tail precision tool for high-mix production.
ES Chipbreaker Design
The ES chipbreaker is Mitsubishi’s answer to precision machining in gummy alloys. Its high-rake edge reduces cutting force, while the specialized chip-pocket prevents bird-nesting in CNC machining environments, even at lower feed rates.
Recommended Cutting Parameters
| Material Group | Speed ($v_c$) | Feed per Rev ($f$) | DOC ($a_p$) |
|---|---|---|---|
| Austenitic Stainless (304/316) | 70 - 160 m/min | 0.08 - 0.25 mm/rev | 0.5 - 3.0 mm |
| Duplex Stainless Steel | 40 - 90 m/min | 0.10 - 0.22 mm/rev | 0.5 - 2.5 mm |
REQUIRED TOOL HOLDERS
This is a Left-Hand (L) insert. It requires Left-Hand tool holders such as MTJNL 1616 or WTJNL 1616.
Browse Left-Hand 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.