Mitsubishi VNMG160404-MA US735 Carbide Insert | VNMG 331
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Mitsubishi VNMG160404-MA US735
Tough CVD Coated Grade for Interrupted Stainless Steel Machining
The Mitsubishi VNMG160404-MA US735 is a high-toughness 35° rhombic negative-type carbide turning insert. Engineered specifically for the challenges of stainless steel turning, the US735 grade is Mitsubishi's premier solution for interrupted cuts and unstable machining conditions. This VNMG 331-MA ANSI equivalent provides exceptional resistance to thermal cracking and chipping, making it a reliable CNC lathe tool for difficult-to-machine alloys.
Model Nomenclature Breakdown
Understanding the precision behind the VNMG160404-MA identification code:
| Code | Detailed Specification |
|---|---|
| V | Shape: 35° Rhombic (Diamond) |
| N | Clearance Angle: 0° (Negative) |
| M | Tolerance Class: Medium Precision |
| G | Feature: Double-Sided with Hole |
| 16 | Size: ~16mm Cutting Edge Length |
| 04 | Thickness: 4.76mm |
| 04 | Nose Radius: 0.4mm (Fine Finishing) |
| MA | Chipbreaker: Medium Cutting (Standard Application) |
Global Identification: Metric vs. Inch
This precision turning tool follows international ISO and ANSI sizing:
- ISO (Metric): VNMG160404-MA
- ANSI (Imperial): VNMG 331-MA
US735 Grade & MA Chipbreaker Detail
US735 Tough CVD Grade: Specifically optimized for stainless steel machining. The US735 grade features a thick coating that provides a high barrier against heat. It is the "heavy-duty" grade choice when you face interrupted cutting or when using older machines where stability is a concern.
MA Chipbreaker: The MA geometry is a universal "Medium-Range" breaker. It is specifically designed to provide stable chip control over a wide range of feed rates, effectively preventing chip entanglement and protecting the high surface finish of the workpiece.
Recommended Cutting Parameters
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (f) | Depth of Cut (ap) |
|---|---|---|---|
| Stainless Steel (304/316) | 60 - 140 m/min | 0.10 - 0.35 mm/rev | 0.5 - 3.5 mm |
| Mild Steel (Interrupted) | 80 - 160 m/min | 0.12 - 0.30 mm/rev | 0.5 - 3.0 mm |
Optimize Your Setup
Ensure maximum stability by pairing this VNMG insert with high-quality tool holders.
Shop Compatible DVJNR/L Tool HoldersSelection Tip: Grade Comparison
US735 is the king of interrupted cuts in stainless steel. However, for stable, high-speed turning of stainless steel, consider VP15TF for better sharpness. If your application is strictly carbon steel, the UE6110 or UE6020 grades will provide better wear resistance at higher speeds.
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.