Korloy SNMG120408-HS PC9030 Stainless Steel Turning Insert (10pcs)
30-Day Free Returns
Free Worldwide Shipping
The Original Korloy SNMG120408-HS PC9030 is a premium Double-Sided Square Turning Insert designed for the precision demands of Stainless Steel (M-Group) and Exotic Alloys. Utilizing the specialized PC9030 PVD Grade, this insert excels in preventing built-up edge (BUE) and minimizing thermal cracking. The -HS (High-Sharpness) geometry features a unique wave-like chipbreaker that provides aggressive chip control while maintaining low cutting resistance, making it ideal for high-quality semi-finishing operations.
Engineered for Tough Materials: Stainless steel requires a sharp edge to prevent work hardening. The SNMG120408-HS combines a razor-sharp profile with a robust 0.8mm radius, giving you the durability needed for medium-duty cuts without sacrificing the mirror-like finish of a precision tool.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | SNMG120408-HS |
| Corner Radius | 0.8 mm (Edge Strength + Finish) |
| Coating | PC9030 (Fine PVD for Heat Resistance) |
| Edges | 8 Usable Cutting Edges |
Core Performance Benefits:
- PVD Micro-Thin Coating: The PC9030 grade is chemically inert to stainless steel, significantly reducing the "sticking" effect during machining.
- Reinforced Precision: The 0.8mm radius handles heavier feed rates than the 0.4mm version while maintaining excellent structural integrity.
- Advanced HS Chipbreaker: Excellent for breaking long, bird-nesting chips commonly found in 304 and 316L stainless steel.
- Exceptional ROI: Double-sided 8-edge design offers unparalleled economy for high-volume production.
Recommended Cutting Parameters (Stainless & Exotic):
| Material | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (ap) |
|---|---|---|---|
| 304 / 316 Stainless | 90 - 180 m/min | 0.12 - 0.28 mm/rev | 0.5 - 3.5 mm |
| Duplex Stainless | 45 - 95 m/min | 0.10 - 0.22 mm/rev | 0.5 - 3.0 mm |
| Titanium / Inconel | 25 - 55 m/min | 0.08 - 0.18 mm/rev | 0.3 - 2.5 mm |
Compatible Tool Holders:
Universal fit for all negative 12.7mm (1/2") IC holders:
- External Turning: MSSNR 2525M12 / 3232P12
- Internal Boring Bars: S32T-MSSNR12 / S40U-MSSNR12
Machinist Tip: PC9030 vs PC5300
Selecting the best PVD grade for high-performance turning:
Best for Finish & Speed. Specialized for Stainless Steel. It offers better resistance to the chemical wear and "sticking" typical of 316L and duplex steels. Choose this for the best surface quality.
Best for Toughness. Use PC5300 if you have heavy interruptions (like holes or hex bars) or if the material is a mix of steel and stainless. It is tougher but slightly more prone to BUE in clean stainless cuts.
Pro Advice: For SNMG120408-HS, maintain a constant speed ($V_c$). If the speed is too low, the PVD coating cannot effectively prevent the material from welding to the edge, leading to chipping.
Packaging: 10 pieces per box.
Korloy SNMG120408-HS price, semi-finishing inserts for 316 stainless steel, best PVD turning insert for titanium, SNMG 120408-HS cutting feed and speed, stainless steel turning with 0.8mm radius