Korloy WNMG080404-HA NC3020 (WNMG 431-HA) Sharp Edge Steel Turning Insert
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The Original Korloy WNMG080404-HA NC3020 (ANSI: WNMG 431-HA) is a specialized 80° Trigon Turning Insert designed for Low-Resistance Steel Machining. While the HA chipbreaker is traditionally known for its sharpness in non-ferrous materials, this version utilizes the NC3020 CVD Coated Grade to provide exceptional wear resistance on Carbon Steel and Alloy Steel. It is the perfect solution for machining thin-walled parts or operations where vibration is a major concern.
The Low-Vibration Specialist: The HA geometry features a high positive rake angle that "slices" through steel, drastically reducing radial cutting forces. Combined with the NC3020 coating, it offers a longer tool life than uncoated inserts while maintaining the precision of a sharp edge.
Technical Specifications (ISO vs. ANSI):
| ISO Designation | WNMG 080404-HA |
| ANSI Designation | WNMG 431-HA |
| Corner Radius (r) | 0.4 mm / (1/64") |
| Grade | NC3020 (Premium CVD Coated) |
| Application | Steel (P10-P25), Low Carbon Steel, Thin-wall parts |
Recommended Cutting Parameters (for Steel):
| Material Group | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (ap) |
|---|---|---|---|
| Low Carbon Steel (A3/1018) | 200 - 350 m/min | 0.05 - 0.20 mm/rev | 0.2 - 2.0 mm |
| Alloy Steel (4140/SCM440) | 150 - 280 m/min | 0.05 - 0.15 mm/rev | 0.2 - 1.5 mm |
Core Performance Benefits:
- Extreme Sharpness: The HA geometry reduces cutting heat and prevents work-hardening in low-carbon steels.
- Advanced CVD Coating: NC3020 provides a thick thermal barrier, allowing for higher cutting speeds than PVD grades in stable steel turning.
- Chatter Prevention: The low radial force design makes it the best choice for small-diameter bores or long, slender shafts.
- 6-Edge Trigon Economy: Maximize your cost-efficiency with 6 precision edges per insert, doubling the life per dollar compared to many competitors.
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Special Application Note
While the HA chipbreaker is the king of Aluminum, using it with the NC3020 grade is a "secret weapon" for Steel precision parts. It offers a sharper cut than standard HS or GS geometries, making it essential for CNC shops dealing with high-vibration setups.
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.