Korloy VCMT160408-HMP NC3120 (ANSI VCMT 332-HMP) Upgraded CVD Steel Turning Insert (10pcs)
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The Original Korloy VCMT160408-HMP NC3120 (ANSI Cross Reference: VCMT 332-HMP) is the industry's new benchmark for Efficient Steel Profiling. As the successor to the NC3020, the NC3120 Grade features an upgraded CVD coating and a specialized substrate designed to handle higher temperatures and mechanical loads. The robust 0.8mm (1/32") radius allows for increased feed rates and improved edge security, making it perfect for semi-finishing and medium turning of carbon, alloy, and tool steels.
The Professional Choice: By upgrading to NC3120, users experience a significant reduction in flank wear and chipping. The 160408 configuration provides the extra mass needed to dampen vibrations in long-reach internal boring operations.
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 | NC3120 (New Generation CVD) |
| Target Materials | Steel (P15 - P35) |
Core Performance Benefits:
- Optimized CVD Nanotechnology: NC3120’s refined multi-layer coating provides superior heat insulation, extending the life of the 35° sharp geometry during high-speed cuts.
- Reinforced R0.8 Edge: The 0.8mm radius offers much better resistance to mechanical shock and heat concentration than the 0.4mm version, enabling higher feed rates (up to 0.28 mm/rev).
- HMP Chipbreaker Versatility: "Harmony Medium-Positive" geometry excels in controlling chips across varying depths of cut, preventing scratches on the workpiece surface.
- Predictable Stability: The thick 4.76mm base and V-bottom design ensure rigid clamping, essential for maintaining tight tolerances in precision profiling.
Recommended Cutting Parameters:
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (ap) |
|---|---|---|---|
| Carbon Steel (1045) | 180 - 360 m/min | 0.12 - 0.28 mm/rev | 0.5 - 3.5 mm |
| Alloy Steel (4140) | 150 - 300 m/min | 0.10 - 0.25 mm/rev | 0.5 - 3.0 mm |
Compatible Internal Boring Bars:
- S32T-SVUCR16: 32mm Diameter Steel Shank, 93° Lead Angle (Right-hand).
- S40U-SVQCR16: 40mm Diameter Steel Shank, 107.5° Lead Angle (Right-hand).
Why Upgrade to NC3120?
The evolution from NC3020 to NC3120:
NC3120 is designed to be more "forgiving." It handles slightly harder materials and minor surface scale better than the older NC3020, making it a more universal grade for your shop.
The combination of the NC3120's high speed capability and the 0.8mm radius's high feed capacity allows you to push for maximum productivity without sacrificing tool life.
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.