Korloy WNMG080408-HM NC3020 (WNMG 432-HM) Steel Turning Insert (10pcs)
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The Original Korloy WNMG080408-HM NC3020 (ANSI: WNMG 432-HM) is the quintessential 80° Trigon Turning Insert for steel machining worldwide. Featuring a robust 0.8mm (1/32") corner radius, this insert provides the perfect combination of edge strength and versatility. Powered by the NC3020 CVD grade, it is optimized for high-speed continuous cutting of carbon and alloy steels, delivering exceptional wear resistance and reliability.
The Most Popular Choice: If you are unsure which insert to start with for steel turning, WNMG080408 is the answer. It fits all standard MWLNR/L tool holders and offers 6 high-performance cutting edges, making it the most cost-effective solution for CNC production.
Technical Specifications (ISO Metric vs. ANSI Inch):
| ISO Designation | WNMG 080408-HM |
| ANSI Designation | WNMG 432-HM |
| Corner Radius (r) | 0.8 mm / (1/32") |
| Grade | NC3020 (CVD Al2O3 Coated) |
| Chipbreaker | HM (Medium / Universal) |
Compatible Tool Holders (Matching Hyperlinks):
To ensure maximum stability and performance, we recommend pairing this insert with high-quality Korloy-compatible tool holders:
- External Turning: MWLNR/L Series (Standard 80° Trigon Holders)
- Internal Boring: S-MWLNR/L Boring Bars (Internal Turning)
- Multi-Tasking: WWLNR/L Series (Top-Clamp Stability)
Core Performance Benefits:
- Robust Semi-Roughing: The R0.8 radius handles higher feed rates and heavier loads than the 04 radius, reducing the risk of edge collapse during the first pass.
- Superior Heat Resistance: NC3020's multi-layered CVD coating acts as a thermal shield, preventing crater wear during dry or wet high-speed machining.
- Proven Chip Control: The HM chipbreaker excels in a wide "sweet spot" of feed rates, effectively curling and breaking chips to prevent surface scratching.
- 6 Edges for the Price of 4: The Trigon geometry offers two additional cutting edges compared to CNMG, lowering your tool costs by 33% instantly.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (ap) |
|---|---|---|---|
| Carbon Steel (1045) | 200 - 350 m/min | 0.15 - 0.35 mm/rev | 1.0 - 4.0 mm |
| Alloy Steel (4140) | 160 - 280 m/min | 0.12 - 0.30 mm/rev | 1.0 - 3.5 mm |
Packaging: 10 pieces per box.
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