Korloy WNMG080404-HM NC3030 (WNMG 431-HM) High-Toughness Turning Insert (10pcs)
Price shown is a starting point. Contact us for a precise quote based on your requirements.
The Original Korloy WNMG080404-HM NC3030 (ANSI: WNMG 431-HM) is a specialized 80° Trigon Turning Insert engineered for Impact Resistance and Toughness. While maintaining the precision of a 0.4mm (1/64") radius, this insert utilizes the NC3030 CVD Grade, which is specifically formulated to prevent edge chipping during interrupted cutting or when machining workpieces with unstable setups. It is the ultimate insurance for steel turning operations that demand both high precision and extreme durability.
Built for the Tough Stuff: NC3030 is Korloy’s go-to grade for stability. If your NC3020 inserts are chipping due to vibrations or irregular part surfaces, switching to NC3030 will provide the structural integrity needed to finish the job without downtime.
Technical Specifications (ISO Metric vs. ANSI Inch):
| ISO Designation | WNMG 080404-HM |
| ANSI Designation | WNMG 431-HM |
| Corner Radius (r) | 0.4 mm / (1/64") |
| Grade | NC3030 (High-Toughness CVD) |
| Chipbreaker | HM (Medium / Universal) |
Compatible Tool Holders:
For optimal rigidity in interrupted cuts, pair this insert with our heavy-duty holders:
- External Turning: MWLNR/L Series (Standard Trigon)
- Internal Boring: S-MWLNR/L Series (Steel & Carbide Bars)
Core Performance Benefits:
- High Resistance to Chipping: The NC3030 substrate is significantly more ductile, absorbing shocks from interrupted cuts that would shatter harder grades.
- Low Cutting Pressure: The R0.4 radius reduces radial forces, helping to prevent chatter on long-overhang boring bars or thin shafts.
- Versatile HM Geometry: The Medium (HM) chipbreaker provides consistent chip evacuation across a broad range of steel alloys and cutting depths.
- 6-Edge Economy: Like all WNMG inserts, this provides 6 usable edges, making it much more cost-efficient than 4-edge CNMG alternatives for high-volume production.
Recommended Cutting Parameters:
| Machining Condition | Cutting Speed (Vc) | Feed Rate (fn) | Max Depth (ap) |
|---|---|---|---|
| Interrupted Cut (Steel) | 140 - 240 m/min | 0.10 - 0.20 mm/rev | 2.0 mm |
| Stable Cut (Steel) | 180 - 280 m/min | 0.10 - 0.25 mm/rev | 2.0 mm |
Packaging: 10 pieces per box.
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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.