Korloy SNMG120408-GS PC9030 0.8mm 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-GS PC9030 is a high-productivity Double-Sided Square Turning Insert, specifically designed for Stainless Steel (M-Group) and High-Temperature Alloys. This insert features a robust 0.8mm Corner Radius, providing enhanced edge strength and allowing for higher feed rates compared to the 0.4mm version. With 8 usable cutting edges, it delivers exceptional cost-efficiency. The PC9030 PVD Grade ensures superior resistance to built-up edge and thermal shock, while the -GS chipbreaker maintains a sharp cutting action to reduce work hardening.
The Strength of 0.8mm: The 0.8mm radius is the industry standard for general-purpose turning. It offers a perfect balance between surface finish and durability. If your stainless steel application involves slightly crusty surfaces or light interruptions, the SNMG120408-GS is your most reliable choice.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | SNMG120408-GS |
| Corner Radius | 0.8 mm (Enhanced Strength) |
| Inscribed Circle (IC) | 12.7 mm |
| Grade | PC9030 (Premium PVD for Stainless) |
Core Performance Benefits:
- Enhanced Edge Toughness: 0.8mm radius significantly reduces the risk of tip breakage during heavy-load or interrupted cuts.
- Anti-Adhesive PVD Coating: The specialized PC9030 layer prevents "gummy" stainless steel from sticking to the edge, extending tool life.
- 8-Edge Economy: Double-sided design reduces tooling costs by up to 50% compared to single-sided inserts.
- Superior Chip Evacuation: GS geometry features a wide chip-breaking range, keeping the work area clear and preventing surface scratches.
Recommended Cutting Parameters (Stainless Steel):
| Material Group | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (ap) |
|---|---|---|---|
| 304 / 316 Stainless | 100 - 180 m/min | 0.12 - 0.30 mm/rev | 0.8 - 3.5 mm |
| 400 Series / Martensitic | 120 - 210 m/min | 0.15 - 0.35 mm/rev | 1.0 - 4.0 mm |
| Duplex / Super Alloys | 40 - 80 m/min | 0.10 - 0.25 mm/rev | 0.5 - 2.5 mm |
Compatible Tool Holders:
Precision fit for standard 12.7mm IC negative tool holders:
- External Turning (Standard): MSSNR 2020 / 2525 / 3232 Serie
- Large Boring Bars: S32T-MSSNR12 / S40U-MSSNR12
Machinist Tip: Why 0.8mm vs 0.4mm for Stainless?
Optimizing your SNMG1204 selection:
Productivity Choice. The larger radius dissipates heat better. In stainless steel, this prevents the tip from melting or deforming under long cycle times. It's the best choice for roughing and semi-finishing.
Precision Choice. Use 0.4mm when you have low-power machines or thin-walled parts. It reduces radial force and vibration, but the tip is more delicate in stainless steel.
Pro Advice: When using SNMG120408-GS, ensure your feed rate ($fn$) is above 0.15mm/rev. Stainless steel work-hardens quickly; you must feed the tool fast enough to "bite" through the hardened layer created by the previous pass.
Packaging: 10 pieces per box.
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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.