Korloy WNMG080404-HM PC9030 (WNMG 431-HM) Stainless Steel Turning Insert (10pcs)
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The Original Korloy WNMG080404-HM PC9030 (ANSI: WNMG 431-HM) is a high-performance 80° Trigon Turning Insert specifically engineered for Stainless Steel and Super Alloys. Featuring the renowned PC9030 PVD Grade, this insert excels in preventing "built-up edge" and heat accumulation—the two biggest challenges in stainless machining. With its 0.4mm (1/64") radius, it is the ideal solution for finishing and semi-finishing operations requiring tight tolerances and mirror-like surface quality.
The Stainless Steel Specialist: PC9030 is designed with a specialized PVD coating that provides high toughness and a smooth surface. It is the top choice for machining 304, 316, and other difficult-to-cut stainless steels, even in interrupted cutting conditions.
Technical Specifications (ISO vs. ANSI):
| ISO Designation | WNMG 080404-HM |
| ANSI Designation | WNMG 431-HM |
| Corner Radius (r) | 0.4 mm / (1/64") |
| Grade | PC9030 (Premium PVD Coated) |
| Primary Material | Stainless Steel (M), Heat Resistant Alloys (S) |
Cutting Parameters (Recommended):
Optimize your PC9030 performance with these recommended parameters for stainless steel:
| Material Group | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (ap) |
|---|---|---|---|
| Austenitic Stainless (304/316) | 120 - 200 m/min | 0.10 - 0.25 mm/rev | 0.5 - 3.0 mm |
| Martensitic Stainless (440C) | 100 - 180 m/min | 0.10 - 0.20 mm/rev | 0.5 - 2.5 mm |
Compatible Tool Holders:
To prevent vibration in stainless steel machining, use these compatible holders:
- External Turning: MWLNR/L Series (Standard Trigon)
- Internal Boring: S-MWLNR/L Series (High-Rigidity Boring Bars)
Core Performance Benefits:
- Anti-Bonding Coating: The PVD TiAlN coating reduces chemical affinity with the workpiece, effectively stopping built-up edge on gummy materials.
- Excellent Edge Toughness: Specialized sub-micron substrate absorbs mechanical shocks, making it reliable for light-to-medium interrupted cuts.
- Economic 6-Edge Design: Provides 50% more productivity per insert than standard CNMG alternatives, significantly lowering your tooling costs.
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Grade Selection Pro-Tip
PC9030 vs. NC3020: While NC3020 is a CVD grade for high-speed Steel turning, PC9030 is a PVD grade optimized for Stainless Steel. PVD grades have sharper edges and higher toughness, which are essential for the sticky nature and work-hardening properties of stainless materials.
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.