Korloy VNMG160408-HM PC9030 (ANSI VNMG 332-HM) PVD Carbide Insert for Stainless Steel (10pcs)
Price shown is a starting point. Contact us for a precise quote based on your requirements.
The Original Korloy VNMG160408-HM PC9030 (ANSI Cross Reference: VNMG 332-HM) is a heavy-duty 35° Rhombic Negative Insert designed for High-Efficiency Stainless Steel Machining. Featuring a robust 0.8mm (1/32") Corner Radius and the specialized PC9030 PVD Grade, this insert excels where high cutting forces and heat are present. With 4 usable cutting edges, it provides maximum cost-efficiency for semi-finishing and medium-duty turning of 300 and 400 series stainless steels.
Built for Toughness: The R0.8 edge is significantly stronger than the R0.4 version, allowing it to withstand the mechanical shock of interrupted cuts and the thermal stress of deep profiling in gummy materials like 304 and 316 stainless steel.
Technical Specifications (Metric & ANSI):
| ISO Designation | VNMG 160408-HM |
| ANSI Designation | VNMG 332-HM |
| 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 TiAlN) |
| Application | Stainless Steel (M), Exotic Alloys (S) |
Core Performance Benefits:
- Advanced PVD TiAlN Coating: Specifically developed for stainless steel to provide extreme oxidation resistance and prevent Built-Up Edge (BUE).
- 4 Precision Cutting Edges: The negative geometry allows for double-sided use, effectively halving the tool cost per edge compared to positive V-inserts.
- Enhanced Edge Security: The R0.8 radius handles higher chip loads and provides better heat dissipation than smaller radii, extending tool life in tough materials.
- HM "Harmony" Chipbreaker: Optimizes chip curl and evacuation in ductile materials, reducing the risk of chip-nesting and surface scratching.
Recommended Cutting Parameters:
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (ap) |
|---|---|---|---|
| Austenitic (304/316) | 80 - 160 m/min | 0.12 - 0.28 mm/rev | 0.8 - 3.5 mm |
| Duplex Stainless | 50 - 100 m/min | 0.10 - 0.22 mm/rev | 0.5 - 2.5 mm |
Compatible Tooling:
- External Profile Tool Holders: MVJNR / MVVNN / DVLNR Series (Size 16)
- Internal Boring Bars: S32U-MVQNR16 / S40V-MVUNR16
Machinist Tip: Scaling Up Stainless Productivity
Stainless steel hardens as it is cut. The R0.8 radius allows you to use a higher feed rate to "get under" the work-hardened layer created by the previous pass, significantly extending tool life.
The R0.8 generates more radial force than the R0.4. Ensure your boring bar or tool post is secure to avoid chatter, especially when machining tough austenitic alloys.
Packaging: 10 pieces per box.
VNMG 332-HM Korloy PC9030, VNMG160408 for 316 stainless steel, best PVD carbide for interrupted stainless cut, Korloy PC9030 feed rate, double sided 35 degree stainless inserts
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.