Korloy SNMG150612-GR NC3020 General Purpose Steel Roughing Insert (10pcs)
Price shown is a starting point. Contact us for a precise quote based on your requirements.
The Original Korloy SNMG150612-GR NC3020 is the premier choice for high-efficiency Steel (P-Group) roughing operations. This insert balances the massive stability of the 1506 thickness (6.35mm) with the high-speed performance of the NC3020 CVD Grade. Featuring a reinforced 1.2mm Corner Radius, it is designed for heavy-duty metal removal where both tool life and production speed are critical. The -GR (Roughing) chipbreaker provides exceptional chip breaking even at large depths of cut, ensuring a clean and safe machining environment.
High-Efficiency Production: NC3020 is engineered for speed. If your setup is stable and you need to maximize your cubic inches per minute (CIPM) in carbon or alloy steels, the NC3020 + GR combination offers the best balance of heat resistance and edge toughness.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | SNMG150612-GR |
| Corner Radius | 1.2 mm (Optimized for Feed & Life) |
| Substrate | NC3020 (Premium CVD for Steel) |
| Coating | Thick Al2O3 + TiCN CVD Layer |
Core Performance Benefits:
- Exceptional Wear Resistance: The NC3020 grade resists crater wear during high-velocity cutting, maintaining consistent tolerances.
- Enhanced Edge Security: 1.2mm radius dissipates cutting heat more effectively than smaller tips, preventing thermal deformation.
- Heavy-Duty GR Geometry: Wide land and aggressive rake angle ensure stable chip breaking in 5mm+ depth of cuts.
- Universal Steel Coverage: Highly effective across Mild Steel, Carbon Steel, and Alloy Steels like 4140 or 4340.
Recommended Cutting Parameters (High Efficiency Steel):
| Material Group | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (ap) |
|---|---|---|---|
| Low Carbon Steel (1018/1020) | 200 - 350 m/min | 0.35 - 0.75 mm/rev | 3.0 - 8.0 mm |
| Alloy Steel (4140/8620) | 160 - 280 m/min | 0.30 - 0.65 mm/rev | 2.5 - 7.0 mm |
| Continuous Heavy Cut | 180 - 300 m/min | 0.40 - 0.70 mm/rev | 4.0 - 8.0 mm |
Compatible Tool Holders:
Precision fit for ISO standard 15.875mm (5/8") IC holders:
- External Turning: MSSNR 2525M15 / 3232P15
Machinist Tip: NC3020 vs NC3030
Choosing the right CVD grade for your production line:
Speed King. Best for general manufacturing with stable machine setups. It handles higher RPMs and provides better wear resistance in continuous cuts, making it more productive for standard steel parts.
Toughness Champion. Switch to NC3030 only if you encounter heavy interruptions, scaly black skins, or unstable workholding. It is slower than NC3020 but harder to break.
Pro Advice: The 1.2mm radius on the SNMG150612-GR allows you to increase your feed rate without sacrificing too much surface finish. This "Sweet Spot" helps in managing the chip load and protecting the tool from premature flank wear.
Packaging: 10 pieces per box.
Korloy SNMG150612-GR price, NC3020 grade for carbon steel, best roughing insert for high speed steel turning, SNMG 150612-GR feeds and speeds, efficient metal removal for alloy steel
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.