Korloy WNMG060404-HS PC9030 (WNMG 331-HS) Stainless Steel Finishing Insert (10pcs)
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The Original Korloy WNMG060404-HS PC9030 (ANSI: WNMG 331-HS) is a high-precision 80° Trigon Turning Insert designed for Fine Finishing of Stainless Steel and Super Alloys. This compact 06-size insert features the HS Chipbreaker, known for its ultra-sharp cutting edge and low cutting force, making it perfect for small-diameter parts and thin-walled components. The PC9030 PVD Grade provides the necessary toughness and anti-bonding properties to achieve a superior surface finish in difficult-to-cut materials.
The Finishing Expert: The HS geometry is specifically engineered to control chips at very shallow depths of cut. If you are struggling with vibration or poor surface quality on stainless steel small parts, the WNMG060404-HS is your ideal solution.
Technical Specifications (ISO vs. ANSI):
| ISO Designation | WNMG 060404-HS |
| ANSI Designation | WNMG 331-HS |
| Insert Size | 06 (Compact Series) |
| Corner Radius (r) | 0.4 mm / (1/64") |
| Chipbreaker | HS (Finishing / Sharp Edge) |
| Grade | PC9030 (Premium PVD) |
Cutting Parameters (Recommended for HS Geometry):
For optimal chip control and mirror-like finish, use these parameters for Stainless Steel:
| Material Group | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (ap) |
|---|---|---|---|
| Stainless Steel (304/316) | 100 - 180 m/min | 0.05 - 0.15 mm/rev | 0.1 - 1.5 mm |
| Heat Resistant Alloy | 30 - 80 m/min | 0.05 - 0.12 mm/rev | 0.1 - 1.0 mm |
Compatible Tool Holders:
Due to the compact 06 size, this insert fits 16mm and 20mm shank holders and smaller boring bars:
- External Turning: MWLNR/L Series (1616 or 2020 Size)
- Internal Boring: S-MWLNR/L Boring Bars (Internal Precision)
Core Performance Benefits:
- Ultra-Low Cutting Resistance: The HS rake angle is designed to "slice" through material, drastically reducing heat and deflection on small workpieces.
- Anti-BUE Technology: PC9030 PVD coating prevents "Built-up Edge" (BUE), a common issue when finishing gummy stainless steel.
- Precision Corner Radius: The 0.4mm (R0.4) radius is the industrial standard for achieving the highest dimensional accuracy in CNC turning.
- Cost-Saving Trigon Shape: Offers 6 cutting edges—double the value of traditional finishing inserts like DCMT or CCMT.
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Chipbreaker Selection Tip
HS vs. HM: Choose the HS chipbreaker for final finishing passes where the depth of cut is shallow (below 1.0mm). If you need to perform general turning or semi-finishing with larger depths of cut, switch to the HM geometry for better edge strength.
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.