Korloy VNMG160408-HS PC9030 (ANSI VNMG 332-HS) PVD Carbide Insert for Stainless Steel Finishing (10pcs)
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The Original Korloy VNMG160408-HS PC9030 (ANSI Cross Reference: VNMG 332-HS) is a high-stability 35° Rhombic Negative Insert optimized for Semi-Finishing and Finishing of Stainless Steel. Featuring a reinforced 0.8mm (1/32") Corner Radius, this insert offers superior edge strength compared to the R0.4 version, allowing for higher feed rates and better resistance to chipping in interrupted cuts. The HS Sharp Breaker coupled with PC9030 PVD Grade ensures exceptional anti-adhesion performance in gummy materials like 316 and 304 stainless steel.
Reinforced Precision: The R0.8 radius design is the ideal choice for finishing operations where the depth of cut varies or where the workpiece surface has minor irregularities. It provides a stable "bite" into the material, reducing the risk of edge vibration and thermal cracking.
Technical Specifications (Metric & ANSI):
| ISO Designation | VNMG 160408-HS |
| ANSI Designation | VNMG 332-HS |
| Inscribed Circle (IC) | 9.525 mm / (3/8") |
| Thickness (S) | 4.76 mm / (3/16") |
| Corner Radius (r) | 0.8 mm / (1/32") |
| Grade | PC9030 (Premium PVD Coated) |
| Target Materials | Stainless Steel (M), Titanium, HRSA (S) |
Core Performance Benefits:
- High-Stability HS Geometry: The sharp rake angle reduces cutting resistance and heat generation, which is critical for maintaining dimensional accuracy in stainless steel.
- PC9030 PVD Coating: A high-hardness TiAlN layer prevents Built-Up Edge (BUE) and offers extreme resistance to the chemical wear typical of machining exotic alloys.
- Improved Heat Dissipation: The R0.8 radius provides more contact area at the tip, helping to carry heat away from the cutting zone and extending tool life during long profiling cycles.
- Versatile Chip Control: Effectively breaks chips in ductile materials at feed rates between 0.10 and 0.25 mm/rev, preventing "bird-nesting" around the tool holder.
Recommended Cutting Parameters:
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (ap) |
|---|---|---|---|
| Stainless Steel (316L) | 90 - 170 m/min | 0.10 - 0.25 mm/rev | 0.3 - 2.0 mm |
| Inconel / Monel | 30 - 60 m/min | 0.08 - 0.18 mm/rev | 0.2 - 1.2 mm |
Compatible Tooling:
- External Turning: MVJNR / MVVNN / DVLNR Series (Size 16)
- Internal Boring Bars: S32U-MVQNR16 / S40V-MVUNR16
HS vs. HM: Choosing the Right Breaker
Best for light cuts where you need to minimize cutting pressure and prevent the material from hardening. Prioritizes surface finish.
Best for general-purpose profiling and slightly deeper cuts. A more versatile "workhorse" chipbreaker for varied batches.
Packaging: 10 pieces per box.
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.