Korloy SNMG120408-HM PC9030 Stainless Steel Turning Insert (10pcs)
Price shown is a starting point. Contact us for a precise quote based on your requirements.
The Original Korloy SNMG120408-HM PC9030 is a specialized Double-Sided Square Turning Insert engineered for maximum efficiency in Stainless Steel (M-Group) and Super Alloys. Powered by the premium PC9030 PVD Coating, this insert offers incredible resistance to thermal cracking and notch wear. The 0.8mm Corner Radius provides the structural integrity needed for high-feed roughing and semi-finishing, while the -HM (Highly Medium) chipbreaker ensures stable chip evacuation in gummy, heat-resistant materials.
Superior Tool Life: Stainless steel is notorious for work hardening. The SNMG120408-HM's specific rake angle is designed to slice through material with less heat generation, paired with a PVD coating that prevents the material from "welded-on" to the cutting edge.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | SNMG120408-HM |
| Corner Radius | 0.8 mm (Heavy Removal) |
| Coating | PC9030 (Premium PVD) |
| Edges | 8 Usable Cutting Edges |
Core Performance Benefits:
- Optimized for Gummy Materials: The smooth PVD surface drastically reduces friction, stopping built-up edge (BUE) before it starts.
- Reinforced Edge Strength: The 0.8mm radius is more resilient than finer tips, allowing for deeper cuts ($a_p$) and higher feed rates ($f_n$).
- Excellent Thermal Stability: Specifically designed to handle the localized heat common in stainless and nickel-alloy machining.
- Maximum Economy: 8-edge design provides half the cost-per-edge of traditional positive inserts like SCMT or CCMT.
Recommended Cutting Parameters (Stainless Steel):
| Material Group | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (ap) |
|---|---|---|---|
| Stainless 304/316 | 80 - 160 m/min | 0.15 - 0.35 mm/rev | 1.0 - 4.5 mm |
| Duplex Stainless | 40 - 100 m/min | 0.12 - 0.28 mm/rev | 1.0 - 3.5 mm |
| Inconel / Alloys | 20 - 45 m/min | 0.10 - 0.25 mm/rev | 0.8 - 2.5 mm |
Compatible Tool Holders:
Universal compatibility with negative ISO holders:
- External Turning (Stable): MSSNR 2525M12 / 3232P12
- Heavy Boring Bars: S32T-MSSNR12 / S40U-MSSNR12
Machinist Tip: Why PC9030 is the Stainless "King"
Optimizing your SNMG120408-HM performance:
Chemical Inertness. This grade is designed specifically for M-class materials. It stays "cool" and neutral, preventing the chemical reaction that causes stainless steel to stick to the insert tip.
Toughness Champion. If you have heavy interruptions or unstable setups, PC5300 is the tougher grade. However, for clean stainless turning, PC9030 will always provide a better finish and longer life.
Pro Advice: When roughing 316L with SNMG120408-HM, do not dwell in the cut. Maintain a consistent feed rate to stay beneath the work-hardened layer created by the previous pass.
Packaging: 10 pieces per box.
Korloy SNMG120408-HM price, best inserts for 316 stainless steel roughing, 8 edge SNMG for stainless, SNMG 120408-HM cutting parameters, PC9030 vs PC9035 for inconel