Korloy SNMG120404-HS PC9030 Precision Stainless Steel Turning Insert (10pcs)
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The Original Korloy SNMG120404-HS PC9030 is a high-precision Double-Sided Square Turning Insert specifically optimized for finishing Stainless Steel (M-Group) and High-Temperature Alloys. Utilizing the advanced PC9030 PVD Grade, this insert prevents built-up edge (BUE) and offers exceptional surface finish quality. The -HS (High-Sharpness) chipbreaker is engineered to minimize cutting forces, making it the perfect solution for long-reach boring or machining thin-walled stainless steel components.
Ultimate Precision for Gummy Materials: The HS geometry features an exceptionally sharp cutting edge that slices through 300-series stainless steel rather than pushing it. This results in significantly lower heat generation and a mirror-like surface finish.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | SNMG120404-HS |
| Corner Radius | 0.4 mm (Ultra Precision) |
| Substrate | PC9030 (Premium PVD for Stainless) |
| Quantity | 10 Inserts / Box |
Core Performance Benefits:
- Optimized PVD Coating: The PC9030 grade features a micro-thin, smooth coating that resists the chemical affinity of stainless steel, preventing "welding" at the tip.
- Reduced Vibration: The sharp -HS geometry lowers radial cutting forces, ideal for small lathes or parts with low rigidity.
- Superior Surface Finish: 0.4mm radius allows for fine finishing passes with tight dimensional tolerances.
- 8 Usable Corners: Maximize your productivity and ROI with eight high-precision edges per insert.
Recommended Cutting Parameters (Precision Stainless):
| Material | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (ap) |
|---|---|---|---|
| 304 / 316L Stainless | 100 - 200 m/min | 0.05 - 0.20 mm/rev | 0.2 - 2.0 mm |
| Duplex Stainless | 50 - 110 m/min | 0.05 - 0.15 mm/rev | 0.2 - 1.5 mm |
| Titanium Alloys | 35 - 75 m/min | 0.05 - 0.12 mm/rev | 0.1 - 1.2 mm |
Compatible Tool Holders:
Fits all ISO negative holders (12.7mm IC):
- External Precision: MSSNR 2020K12 / 2525M12
- Internal Boring Bars: S20S-MSSNR12 / S25S-MSSNR12
Machinist Tip: PC9030 vs PC5300 in Stainless
Fine-tuning your tool selection for stainless steel:
Clean Finishes. Best for stable machines and high-volume stainless production. It resists built-up edge better and provides a smoother surface finish than PC5300.
Interrupted Cuts. Switch to PC5300 if you are hitting keyways or cross-holes in stainless. PC5300 is tougher and less likely to chip during sudden impacts.
Pro Advice: For SNMG120404-HS, the depth of cut ($a_p$) should ideally be greater than the corner radius (0.4mm) to avoid "plowing" and ensure the chipbreaker engages correctly.
Packaging: 10 pieces per box.
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