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.