Mitsubishi VBMT160408-MV US735 | Tough Stainless Steel Insert
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VBMT160408-MV US735
Mitsubishi Materials | Extreme Toughness for Stainless & Super Alloys
Built for the Toughest Cutting Conditions
The Mitsubishi VBMT160408-MV US735 is a 35° diamond PVD coated carbide insert engineered specifically for the challenges of Stainless Steel (M-group) turning. The US735 grade is celebrated for its extreme fracture toughness, making it the industry benchmark for interrupted cuts and gummy materials. Featuring the MV (Medium-V) chipbreaker and a reinforced 0.8mm corner radius, this long-tail stainless turning insert provides superior edge strength and thermal shock resistance.
US735 PVD Grade | MV Versatile Breaker | 0.8mm Radius for Stability
Technical Code Identification
35° Diamond
5° Relief Angle
M-Class Tolerance
Hole with 60° Countersink
16mm Edge
4.76mm Thick
0.8mm Radius
Medium Breaker
ISO (Metric) vs ANSI (Inch) Comparison
| Feature Spec | ISO (Metric) | ANSI (Inch Equivalent) |
|---|---|---|
| Model Number | VBMT160408-MV | VBMT 332-MV |
| Inscribed Circle (IC) | 9.525 mm | 0.375" (3/8") |
| Corner Radius | 0.8 mm | 0.0315" (1/32") |
US735 Grade: Chipping Resistance
The US735 grade is a specialized PVD-coated carbide tailored for "gummy" materials. Its high-adhesion coating resists Built-Up Edge (BUE) and peeling, which are common killers in Stainless Steel turning. It maintains a sharp cutting edge while the specialized substrate prevents fracture, making it the best choice for interrupted cuts in large CNC machining projects.
MV Chipbreaker: Medium Control
The MV (Medium-V) chipbreaker is designed to handle a wide range of depths of cut and feed rates. In profiling, where the engagement angle changes constantly, the MV geometry ensures that chips break consistently, preventing damage to the workpiece surface finish and reducing the risk of "bird-nesting" around the tool holder.
Recommended Cutting Parameters
| Material Group | Speed ($v_c$) | Feed ($f$) | DOC ($a_p$) |
|---|---|---|---|
| Austenitic Stainless (304/316) | 60 - 140 m/min | 0.12 - 0.35 mm/rev | 0.8 - 4.0 mm |
| Heat Resistant Alloys | 35 - 80 m/min | 0.10 - 0.25 mm/rev | 0.8 - 3.0 mm |
COMPATIBLE HOLDERS
Designed for SVJBR/L 16 or SVVBN 16 external holders and large 32mm+ Boring Bars.
Shop 16mm Profiling Tooling →
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.