Korloy WNMG080404-HM NC3020 (WNMG 431-HM) CVD Coated Turning Insert (10pcs)
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The Original Korloy WNMG080404-HM NC3020 (ANSI: WNMG 431-HM) is the industry-standard 80° Trigon Turning Insert for general steel machining. Optimized for Finishing and Semi-Finishing, the 0.4mm (1/64") radius minimizes cutting pressure, making it ideal for maintaining tight tolerances on slender or thin-walled workpieces. The NC3020 CVD grade is specifically engineered to handle the high temperatures of high-speed CNC turning, providing a stable and predictable tool life.
The Global Standard: WNMG 0804 (ANSI 43) is the most versatile size in the turning world. With 6 precision edges and the high-speed NC3020 coating, this insert provides the lowest cost-per-edge for mass production of steel components.
Technical Specifications (ISO Metric vs. ANSI Inch):
| ISO Designation | WNMG 080404-HM |
| ANSI Designation | WNMG 431-HM |
| Insert Size (IC) | 12.7 mm / (1/2") |
| Corner Radius (r) | 0.4 mm / (1/64") |
| Grade | NC3020 (Premium CVD for Steel) |
| Chipbreaker | HM (Medium / Universal) |
Core Performance Benefits:
- Superior Surface Finish: The R0.4 radius is designed to leave a mirror-like finish on carbon and alloy steels, reducing the need for secondary grinding operations.
- Reduced Vibration: Lower radial forces make this insert perfect for long-overhang boring or machining unstable workpieces where chatter is a concern.
- NC3020 High-Speed Coating: Features a thick Alumina (Al2O3) layer that protects the carbide substrate from crater wear, even at speeds exceeding 300 m/min.
- Exceptional Economy: 6 usable cutting edges provide 50% more productivity per insert compared to standard 4-edge diamond (CNMG) inserts.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (fn) | Max Depth (ap) |
|---|---|---|---|
| Carbon Steel (1045) | 220 - 380 m/min | 0.10 - 0.25 mm/rev | 2.0 mm |
| Alloy Steel (4140) | 180 - 300 m/min | 0.08 - 0.20 mm/rev | 1.5 mm |
Packaging: 10 pieces per box.
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