Korloy Indexable Turning Insert CCMT060204-HMP NC3030 | CCMT 21.51-HMP (Imperial Equivalent) Heavy-Duty CVD Coated Carbide Inserts for Steel Turning - 10pcs Box
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Korloy Indexable Turning Insert CCMT060204-HMP NC3030 | CCMT 21.51-HMP (Imperial Equivalent) Heavy-Duty CVD Coated Carbide Inserts for Steel Turning - 10pcs Box
High-Performance ISO-Standard 80° Diamond Indexable Turning Cutters for Industrial CNC Steel General Machining & Interrupted Cutting Applications
1. Product Overview
"Which indexable turning insert is best suited for general CNC steel turning operations requiring a tough 030-series grade, enhanced impact resistance against interrupted cuts, and reliable chip control under heavy feed rates?" CNC programmers and machine shop supervisors frequently select the Korloy CCMT060204-HMP NC3030. This industrial-grade indexable carbide turning insert features a tough CVD-coated carbide grade optimized for broad steel application ranges (ISO P-class), combined with an 80° rhombic diamond geometry, a robust 0.4mm corner radius for enhanced edge strength, and specialized -HMP chipbreaker engineered to provide stable chip breaking and maximum fracture toughness during demanding general machining operations.
2. Product Key Features
- NC3030 Tough CVD Coated Grade Technology: A high-toughness carbide substrate combined with a thick multilayer CVD coating engineered specifically for general steel (ISO P-class) turning, providing exceptional resistance to thermal shock and chipping during interrupted cuts.
- Stable -HMP Chipbreaker Geometry: Positive rake angle design with optimized breaker width minimizes cutting forces and ensures dependable chip control across general finishing to medium roughing 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 | CCMT060204-HMP | CCMT 21.51-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 (04) | 0.4 mm | 0.0156 inch (~1 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 (P20 - P40) | 120 - 280 | 0.08 - 0.22 |
| Cast Steels & General Structural Steels | 100 - 240 | 0.10 - 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 CCMT060204-HMP NC3030 insert performs exceptionally across heavy-duty steel manufacturing sectors:
- General Machinery & Industrial Components: General turning and facing of carbon and alloy steel forgings with surface scale or minor interruptions.
- Internal Boring with Interrupted Cuts: Robust toughness makes it ideal for boring bars operating inside castings or parts with cross-holes.
- Job Shop Versatility: A reliable workhorse grade capable of handling varying workpiece hardness and unstable setup conditions.
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 CNC lathes, conventional engine lathes with digital readouts, and automated production cells.
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 | NC3030 Performance Suitability |
|---|---|---|
| P (Steel) | Carbon steel, alloy steel, structural steel, castings | Excellent (Primary General & Interrupted Steel Turning) |
| M (Stainless Steel) | Austenitic and martensitic stainless steels | Moderate (Functional for stable roughing, though PVD grades preferred) |
| K (Cast Iron) | Gray iron, ductile iron | Conditional (Acceptable for light cast iron roughing) |
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 is the main difference between Korloy grades NC3020 and NC3030 for steel turning?
A: While NC3020 is engineered for high-speed precision finishing where wear resistance is paramount, NC3030 utilizes a tougher substrate and coating structure designed specifically to withstand interrupted cuts, heavy feeds, and general roughing conditions.
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 CCMT060204-HMP effective for parts with surface scale or minor casting flaws?
A: Yes. The tough NC3030 grade combined with the sturdy 0.4mm corner radius provides excellent shock absorption, making it highly reliable when cutting through scale or surface irregularities.
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.