Korloy WNMG080408-HM NC3120 (WNMG 432-HM) High-Speed Steel Turning Insert (10pcs)
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The Original Korloy WNMG080408-HM NC3120 (ANSI: WNMG 432-HM) is a next-generation 80° Trigon Turning Insert engineered for high-performance steel machining. Featuring the advanced NC3120 CVD Grade, this insert is the upgraded successor to the classic NC3020, offering superior thermal stability and wear resistance at even higher cutting speeds. With its robust 0.8mm (1/32") radius, it is the industry standard for versatile semi-finishing to medium roughing of various steel alloys.
Maximize Your Efficiency: NC3120 represents the pinnacle of Korloy's steel turning technology. It is specifically designed for automated production lines where high-speed stability and long-term tool life are critical for reducing downtime.
Technical Specifications (ISO vs. ANSI):
| ISO Designation | WNMG 080408-HM |
| ANSI Designation | WNMG 432-HM |
| Corner Radius (r) | 0.8 mm / (1/32") |
| New Grade | NC3120 (Advanced High-Speed CVD) |
| Chipbreaker | HM (Universal Medium Cut) |
Compatible Tool Holders:
To achieve the best results, we recommend using these standard industrial tool holders:
- External Turning Holders: MWLNR/L Series (Standard 80° Trigon)
- Internal Boring Bars: S-MWLNR/L Series (Internal Boring)
Recommended Cutting Parameters:
Optimize your CNC performance with these recommended settings for NC3120 grade:
| Material Group | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (ap) |
|---|---|---|---|
| Low/Medium Carbon Steel | 220 - 450 m/min | 0.15 - 0.45 mm/rev | 1.0 - 4.5 mm |
| Alloy Steel (Pre-hardened) | 180 - 350 m/min | 0.12 - 0.35 mm/rev | 1.0 - 3.5 mm |
Core Performance Benefits:
- Next-Generation Coating: The NC3120 grade features an enhanced multi-layer Al2O3 coating that significantly increases resistance to crater and flank wear.
- Exceptional Economy: The 6-edge Trigon design provides 50% more cutting edges than standard CNMG inserts, lowering your cost-per-part.
- Stable Chip Control: The HM geometry handles a wide range of cutting depths, ensuring consistent chip breaking even at high feed rates.
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Grade Selection Pro-Tip
NC3120 vs NC3020: While NC3020 is a proven performer for general steel turning, NC3120 is optimized for High-Speed Stability. If your CNC machines are running at maximum capacity and you need better resistance to heat-related wear, NC3120 is the superior choice for high-volume automated production.
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.