Mitsubishi TCMT16T304 US735 | PVD Carbide Insert for Stainless Steel
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TCMT16T304 US735
Mitsubishi Materials | The Specialist for Stainless Steel & Interrupted Cutting
The Mitsubishi TCMT16T304 US735 is a high-toughness PVD coated carbide insert specifically engineered for stainless steel turning. Utilizing the legendary US735 grade, this insert excels in environments with high thermal shock and interrupted cuts. It is the premier choice for long-tail precision tools used in machining austenitic stainless steels (300 series) where edge reliability and resistance to built-up edge (BUE) are critical.
PVD Nano-Coating | M-Class Precision | Toughness Specialist
Nomenclature Breakdown
Triangular Shape
7° Relief Angle
M-Class Tolerance
Fixing Hole
16.5mm Edge
3.97mm Thick
0.4mm Radius
International Standard Conversion
| Parameter | Metric Model (ISO) | Inch Model (ANSI) |
|---|---|---|
| Model Reference | TCMT16T304 | TCMT 32.51 |
| Inscribed Circle (IC) | 9.525 mm | 0.375" |
| Thickness (S) | 3.97 mm | 0.156" |
| Corner Radius (RE) | 0.4 mm | 0.016" |
US735 Grade Performance
The US735 grade is Mitsubishi's specialized PVD coated carbide designed for the "tough" side of the ISO M (Stainless) and ISO P (Steel) spectrum. It is characterized by high resistance to thermal cracking and chipping, making it unparalleled for interrupted cutting and machining materials that tend to stick to the edge.
Precision Chip Control
The TCMT positive geometry combined with the US735 coating significantly reduces cutting resistance. Its dedicated chipbreaker is designed for stable chip evacuation in gummy stainless steels, ensuring that long, stringy chips do not damage the workpiece surface or the indexable turning tool.
Recommended Cutting Parameters
| Workpiece Material | Cutting Speed ($v_c$) | Feed per Rev ($f$) | DOC ($a_p$) |
|---|---|---|---|
| Austenitic Stainless (304/316) | 80 - 150 m/min | 0.08 - 0.22 mm/rev | 0.5 - 2.5 mm |
| Low Carbon Steel (Interrupted) | 140 - 240 m/min | 0.10 - 0.25 mm/rev | 0.5 - 2.0 mm |
HOLDER COMPATIBILITY
Compatible with all standard STFCR/L boring bars and STGCR/L external turning tool holders (Size 16).
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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.