Mitsubishi TNMG160408-MS US735 | Tough Stainless Steel Turning Insert
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TNMG160408-MS US735
Mitsubishi Materials | The Tough-Machining Benchmark for Stainless
The Mitsubishi TNMG160408-MS US735 is a high-performance CVD coated carbide insert engineered for the toughest stainless steel turning challenges. Utilizing the US735 grade, this tool is the primary choice for interrupted cuts where other inserts chip or fail. This long-tail precision tool features the MS chipbreaker, specifically designed to handle the gummy nature of stainless steel while maintaining stable CNC machining performance.
M-Class Application | High Impact Resistance | MS Light-Medium Breaker
Technical Code Breakdown
Triangular Shape
0° Relief Angle
M-Class Tolerance
Hole/Chip Feature
16.5mm Edge
4.76mm Thick
0.8mm Radius
Light-Med Breaker
ISO vs ANSI Standards
| Spec Detail | ISO (Metric) | ANSI (Inch) Equivalent |
|---|---|---|
| Model Identification | TNMG160408-MS | TNMG 332 MS |
| Inscribed Circle (IC) | 9.525 mm | 0.375" |
| Nose Radius | 0.8 mm | 0.031" |
US735 Material Grade
The US735 grade is Mitsubishi's ultimate toughness grade for indexable turning inserts. It utilizes a high-toughness substrate combined with a CVD coating that resists thermal cracking. It is the definitive solution for machining 300-series stainless steels, especially when the cut is unstable or involves heavy interruptions.
MS Chipbreaker Geometry
The MS chipbreaker is a specialized medium-light cutting geometry. Its sharp rake angle significantly reduces cutting forces and prevents built-up edge (BUE). This allows for superior chip control even at lower feed rates, preventing damage to the workpiece surface in gummy materials.
Recommended Cutting Parameters
| Material Group | Speed ($v_c$) | Feed per Rev ($f$) | DOC ($a_p$) |
|---|---|---|---|
| Austenitic Stainless (304/316) | 60 - 140 m/min | 0.12 - 0.35 mm/rev | 1.0 - 4.0 mm |
| High-Temp Alloys (Inconel) | 25 - 55 m/min | 0.10 - 0.30 mm/rev | 0.8 - 3.0 mm |
MATCHING TOOL HOLDERS
Designed for MTJNR/L or WTJNR/L external turning holders (Size 16).
Browse Size 16 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.