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.