Korloy WNMG080408-HA NC3020 (WNMG 432-HA) Sharp Steel Turning Insert
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WNMG080408-HA NC3020
Specialist Solution for Low-Resistance & Anti-Vibration Steel Turning
The Original Korloy WNMG080408-HA NC3020 (ANSI: WNMG 432-HA) is a high-performance 80° Trigon insert engineered for stability in challenging steel applications. By combining the ultra-sharp HA Chipbreaker—traditionally used for aluminum—with the robust NC3020 CVD Coating, this insert acts as a "surgical tool" for Carbon Steel and Alloy Steel. It is specifically designed to eliminate chatter in thin-walled parts or long-overhang setups.
Core Performance Benefits
- Ultra-Low Cutting Resistance: The high positive rake angle of the HA geometry slices through steel, drastically reducing machine load and radial forces.
- Premium NC3020 CVD Coating: Provides exceptional thermal stability and wear resistance, optimized for continuous high-speed steel turning.
- Optimized R0.8 Radius: The 0.8mm (1/32") corner offers a perfect balance of edge strength and superior surface finish quality.
- 6-Edge Trigon Economy: Get 50% more productivity per insert compared to 4-edged CNMG diamond shapes, significantly lowering your cost-per-part.
Technical Specifications
| Attribute | Details |
|---|---|
| ISO Designation | WNMG 080408-HA |
| ANSI Designation | WNMG 432-HA |
| Corner Radius (r) | 0.8 mm (1/32") |
| Grade | NC3020 (High-Performance CVD) |
| Chipbreaker | HA (Sharp Edge / Anti-Vibration) |
Recommended Cutting Data
* Values are starting points; adjust based on machine rigidity and part hardness.
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (ap) |
|---|---|---|---|
| Mild Steel (A3/1018) | 180 - 320 m/min | 0.10 - 0.28 mm/rev | 0.5 - 3.0 mm |
| Alloy Steel (4140/SCM440) | 140 - 260 m/min | 0.08 - 0.22 mm/rev | 0.5 - 2.5 mm |
⚠️ For maximum stability, use with professional tool holders:
Selection Tip: NC3020 vs. PC5300
NC3020 (CVD Coating): Your first choice for High-Speed Steel Turning. It offers superior wear resistance and thermal protection for continuous mass production.
PC5300 (PVD Coating): Better for Interrupted Cuts or stainless steel machining where toughness is prioritized over high-speed wear resistance.
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