Korloy TCMT110204-HMP NC3020 Steel Turning Insert (10pcs)
Price shown is a starting point. Contact us for a precise quote based on your requirements.
The Original Korloy TCMT110204-HMP NC3020 is a premium Triangular Indexable Turning Insert engineered for high-stability machining of Steel, Alloy Steel, and Cast Steel. Powered by the NC3020 CVD Grade, this insert features a thick Al2O3 coating layer that provides exceptional heat resistance and wear-shielding. The HMP Chipbreaker is specifically optimized for medium-finishing operations, ensuring smooth chip evacuation and reducing the risk of workpiece scratching.
Engineered for Productivity: NC3020 is the industry standard for general steel turning (P20–P35). Its balanced substrate toughness and coating hardness make it ideal for continuous cutting at high speeds, providing long tool life and consistent surface finishes.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Designation | TCMT110204-HMP |
| Corner Radius (r) | 0.4 mm (General Precision) |
| Grade | NC3020 (Advanced CVD Coating) |
| Chipbreaker | HMP (Medium-Finish) |
Core Performance Benefits:
- High-Speed Stability: The multi-layer CVD coating allows for significantly higher cutting speeds compared to standard PVD inserts, boosting your throughput.
- HMP Geometry Advantage: Designed with a positive rake angle to reduce cutting resistance, making it suitable for lower-power machines and long boring bars.
- Crater Wear Resistance: The specialized top coating prevents chip friction from eroding the insert face, even during heavy-duty cycles.
- Versatile Application: Excellent for carbon steels (1018, 1045), alloy steels (4140, 8620), and tool steels.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (ap) |
|---|---|---|---|
| Mild Steel (A36 / 1018) | 200 - 350 m/min | 0.10 - 0.28 mm/rev | 0.5 - 2.5 mm |
| Alloy Steel (4140 / 5140) | 160 - 300 m/min | 0.10 - 0.25 mm/rev | 0.5 - 2.0 mm |
| Cast Steel (SC) | 140 - 250 m/min | 0.12 - 0.30 mm/rev | 0.8 - 3.0 mm |
Compatible Tooling Systems:
Fits all standard 11-sized triangular holders and boring bars:
- Internal Boring Bars: S12M-STUCR11 / S16Q-STUCR11
- External Turning Toolholders: STGCR 1616H11 / STGCR 2020K11
Machinist Tip: NC3020 vs NC3120
Selecting the best steel-turning grade for your machine setup:
The Productivity King. Optimized for stable cutting conditions and continuous turning. It offers the best wear resistance at high temperatures. Use this for 80% of your steel turning tasks.
The Problem Solver. Switch to NC3120 if your workpiece has keyways or holes, or if you are dealing with heavy vibrations. It trades a little wear resistance for much higher impact strength.
Pro Advice: For internal boring with TCMT11, ensure the boring bar overhang (L/D) is within 3x to 4x. If vibration occurs, reduce the depth of cut slightly before lowering the feed rate.
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.