Korloy Indexable Turning Insert CCMT060208-HMP NC3020 | CCMT 21.52-HMP (Imperial Equivalent) High-Speed CVD Coated Carbide Inserts for Precision Steel Turning - 10pcs Box
✓ Free Worldwide Shipping
✓ 100% Guaranteed Compatibility | Direct Factory Direct
✓ Fast Dispatch within 24–48 Hours
✓ Technical Support: Need grade selection help? [Contact Engineer]
Korloy Indexable Turning Insert CCMT060208-HMP NC3020 | CCMT 21.52-HMP (Imperial Equivalent) High-Speed CVD Coated Carbide Inserts for Precision Steel Turning - 10pcs Box
High-Performance ISO-Standard 80° Diamond Indexable Turning Cutters for Industrial CNC Steel High-Speed Finishing & Semi-Finishing Applications
1. Product Overview
"Which indexable turning insert is best suited for high-speed CNC steel finishing operations requiring an increased 0.8mm corner radius for enhanced surface finish durability, superior wear resistance, and stable chip control under continuous cutting?" CNC programmers and machine shop supervisors frequently select the Korloy CCMT060208-HMP NC3020. This industrial-grade indexable carbide turning insert features an advanced high-speed CVD-coated carbide grade optimized for steel machining (ISO P-class), combined with an 80° rhombic diamond geometry, a robust 0.8mm corner radius for higher feed rates and edge strength, and specialized -HMP chipbreaker engineered to provide excellent chip evacuation and superior surface roughness parameters during precision finishing operations.
2. Product Key Features
- NC3020 High-Speed CVD Coated Grade Technology: A wear-resistant carbide substrate combined with a specialized multilayer CVD coating engineered for high-speed steel (ISO P-class) turning, providing exceptional resistance to crater wear and thermal deformation.
- Stable -HMP Chipbreaker Geometry: Positive rake angle design with optimized breaker width minimizes cutting forces and ensures dependable chip control across continuous finishing depths.
- ISO Standard Compliance: Manufactured strictly under international cutting tool standards to guarantee secure pocket seating and exact interchangeability across standard turning tool holders and boring bars.
- Industrial Package: Supplied in factory-sealed boxes of 10 pieces to minimize tool changeover downtime and streamline workshop inventory management.
3. Technical Specifications & Model Breakdown
Examine the comprehensive parameter specifications, metric and imperial equivalents, and ISO coding breakdown below for precise CNC lathe integration.
Metric vs. Imperial Designation Comparison
| Specification Parameter | Metric Standard (ISO) | Imperial Equivalent (ANSI) |
|---|---|---|
| Primary Insert Model | CCMT060208-HMP | CCMT 21.52-HMP |
| Inscribed Circle / Size | 6.35 mm (0602 series) | 1/4" nominal (21.5 series / ~6.35mm equivalent scale) |
| Insert Thickness (02) | 2.38 mm (3/32" class) | 0.0938 inch (1.5 thickness class) |
| Corner Radius (08) | 0.8 mm | 0.0313 inch (~2 radius designation scale) |
Recommended Cutting Parameters (Feed & Speed)
| Workpiece Material Group | Cutting Speed (vc) m/min | Feed Rate (f) mm/rev |
|---|---|---|
| Carbon Steels & Alloy Steels (P10 - P30) | 180 - 360 | 0.10 - 0.30 |
| High-Speed Finishing Steels | 150 - 320 | 0.08 - 0.25 |
Need matching SCLCR/SCLCL external turning tool holders or boring bars for your 06-series CCMT inserts?
Explore Compatible Turning Tool Holders4. Product Application Scenarios
The Korloy CCMT060208-HMP NC3020 insert performs exceptionally across precision steel manufacturing sectors:
- High-Speed CNC Shaft Machining: Precision finishing of long alloy steel shafts and cylindrical components requiring superior surface integrity.
- Automotive Powertrain Production: High-efficiency continuous turning of hardened steel components and transmission elements.
- Precision Mold & Die Work: Clean finishing passes on carbon steel mold bases and fixture components.
5. Compatibility
Designed to integrate seamlessly into standard industrial turning systems:
- Tool Holders: Fully compatible with SCLCR/SCLCL external turning tool holders and S-SCLCR internal boring bars configured for CCMT 0602 series inserts.
- CNC Machinery: Optimized for high-speed CNC lathes, turning centers, and automated manufacturing lines.
6. Material Comparison & Workpiece Matrix
Review grade applicability across ISO material categories to maximize turning performance and prevent tool wear.
| ISO Material Category | Target Materials | NC3020 Performance Suitability |
|---|---|---|
| P (Steel) | Carbon steel, alloy steel, free-cutting steel | Excellent (Primary High-Speed Steel Finishing Application) |
| M (Stainless Steel) | Austenitic stainless steels | Moderate (Functional for stable high-speed finishing) |
| K (Cast Iron) | Gray iron, ductile iron | Not Recommended (Coating optimized specifically for steel) |
7. Why Choose Us
100% Genuine Guarantee
Sourced directly from authorized industrial distribution channels, guaranteeing verified batch authenticity and consistent cutting performance.
Fast Global Logistics
Maintained warehouse stock and streamlined international shipping networks ensure rapid dispatch to eliminate production delays.
Technical Expertise
Backed by professional CNC application engineers available to provide customized cutting data recommendations and troubleshooting support.
8. Frequently Asked Questions (FAQ)
Q: What are the advantages of choosing a 0.8mm corner radius (08) over a 0.4mm radius for steel finishing?
A: The 0.8mm corner radius provides greater edge strength and allows for higher feed rates while maintaining an exceptional surface finish, making it ideal for robust high-speed finishing operations.
Q: How many inserts are included in each factory package?
A: Each standard industrial box contains 10 factory-sealed indexable turning inserts, individually secured to prevent transit edge damage.
Q: Is the NC3020 grade suitable for interrupted turning cuts?
A: NC3020 is engineered primarily for high-speed continuous finishing. For heavy interrupted cuts on steel, grades with higher toughness like NC3030 are recommended.
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.