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.
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