Korloy VCMT160408-HMP PC9030 (ANSI VCMT 332-HMP) PVD Carbide Insert for Stainless Steel (10pcs)
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The Original Korloy VCMT160408-HMP PC9030 (ANSI Cross Reference: VCMT 332-HMP) is a high-performance 35° Rhombic Positive Insert optimized for High-Efficiency Stainless Steel Profiling. Featuring a reinforced 0.8mm (1/32") Corner Radius and the legendary PC9030 PVD Grade, this insert provides the perfect balance of edge strength and heat resistance. It is engineered to excel in semi-finishing to medium cutting of 300/400 series stainless steels and heat-resistant alloys.
Maximum Edge Security: The 160408 configuration allows for significantly higher feed rates compared to the 04 radius version. Its robust edge design withstands the mechanical shock of interrupted cuts and the thermal stress typical of stainless steel production, especially in deep internal boring.
Technical Specifications (Metric & ANSI):
| ISO Designation | VCMT 160408-HMP |
| ANSI Designation | VCMT 332-HMP |
| 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) |
| Application | Stainless Steel (M), Exotic Alloys (S) |
Core Performance Benefits:
- High-Performance PC9030 PVD Grade: Features a dense TiAlN coating that prevents built-up edge (BUE) and offers superior resistance to heat-related wear.
- Reinforced R0.8 Edge: The 0.8mm radius provides a larger contact area to dissipate heat and support higher chip loads, making it much more durable than the R0.4 version.
- Efficient HMP Chipbreaker: Specially designed for "Harmony Medium-Positive" performance, ensuring smooth chip evacuation in gummy materials like 304 and 316.
- Rigid Indexing: The VCMT's V-bottom design ensures the insert remains perfectly seated in the holder, even during high-feed profiling.
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 - 3.0 mm |
| Duplex Stainless Steel | 60 - 110 m/min | 0.10 - 0.22 mm/rev | 0.5 - 2.5 mm |
Compatible Tooling Systems:
- Internal Boring Bars: S32T-SVUCR16 / S40U-SVQCR16 (Right-hand)
- External Profiling Holders: SVJCR 2020K16 / SVJCR 2525M16
Machinist Tip: Scaling Up Productivity
Why choose the R0.8 (VCMT 332) for your stainless jobs:
Stainless steel work-hardens instantly. With the R0.8 edge, you can use a higher feed rate to stay under the work-hardened layer, increasing both tool life and surface integrity.
The R0.8 radius generates more radial force than the R0.4. When using the S32T-SVUCR16 boring bar, ensure the overhang is as short as possible to avoid chatter at high feed rates.
Packaging: 10 pieces per box.
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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.