KORLOY TNMG220404-HM NC3020 Indexable Carbide Turning Inserts | TNMG431-HM (ANSI Equivalent) CVD Coated Carbide Cutters for High-Speed Steel Finishing & Semi-Roughing - 10pcs/box
✓ In Stock & Fast Dispatch: Ships within 24–48 Hours from China
✓ Global Shipping: Express 3–10 Days | Standard 5–15 Days
✓ Guaranteed Quality: 100% Compatibility | Direct Factory Outlet
✓ Technical Support: Need grade selection help? Contact Engineer
KORLOY TNMG220404-HM NC3020 Indexable Carbide Turning Inserts | TNMG431-HM (ANSI Equivalent) CVD Coated Inserts for High-Speed Steel Machining - 10pcs/box
High-Performance ISO-Standard 60° Triangular Negative Indexable Turning Cutters Optimized for High-Speed Semi-Roughing and Precision Finishing of Carbon and Alloy Steels
1. Product Overview
"Which carbide turning insert delivers superior wear resistance and precise edge control for high-speed semi-roughing and finishing of structural and alloy steels?" CNC machinists and manufacturing engineers consistently select the KORLOY TNMG220404-HM NC3020. This industrial-grade indexable carbide insert combines an advanced NC3020 grade multi-layer CVD coating over a wear-resistant tungsten carbide substrate, delivering exceptional performance under high cutting velocities. Built with a 60° triangular negative geometry for double-sided economic indexing, a specialized -HM chipbreaker tailored for reliable chip control at tighter tolerances, and a sharp 0.4mm corner radius for enhanced profile accuracy, it incorporates specialized rake geometries designed to ensure smooth chip evacuation and prevent thermal wear during extended machining operations.
2. Product Key Features
- Advanced NC3020 CVD Coating Technology: Multi-layer coating architecture engineered for high-speed cutting velocities and semi-roughing applications with outstanding resistance to flank wear and cratering.
- HM Chipbreaker Geometry & 0.4mm Radius: Features a double-sided positive rake land configuration combined with a precision 0.4mm nose radius for clean surface finishes and tight dimensional control.
- ISO Standard Compliance: Manufactured strictly under international cutting tool standards to guarantee secure clamping and exact interchangeability across standard negative external toolholders.
- Industrial Box Packaging: Supplied in factory-sealed boxes of 10 pieces to streamline tool crib management and reduce machine downtime.
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 | TNMG220404-HM | TNMG431-HM |
| Inscribed Circle (IC) | 12.7 mm | 0.500 in (1/2") |
| Insert Thickness (S) | 4.76 mm | 0.1875 in (3/16") |
| Corner Radius (r) | 0.4 mm | 0.0157 in |
Recommended Cutting Parameters (Feed & Speed)
| Workpiece Material Group | Cutting Speed (vc) m/min | Feed Rate (f) mm/rev |
|---|---|---|
| Carbon Steel (< 0.5% C) | 220 - 360 | 0.15 - 0.35 |
| Alloy Steel (Low/Medium Alloy) | 180 - 300 | 0.12 - 0.30 |
Need matching MTJNR, PTJNR, or WTJNR external turning toolholders for your TNMG 2204 inserts?
Explore Compatible External Turning Tool Holders & Boring Bars4. Product Application Scenarios
The KORLOY TNMG220404-HM NC3020 insert excels across precision industrial manufacturing sectors:
- Precision Shaft Turning: High-speed semi-finishing and finishing passes on steel shafts and rotating spindles.
- Automotive Powertrain Lines: Machining tight-tolerance steel components requiring superior surface finishes.
- General Engineering CNC Lathes: Continuous turning operations demanding dependable edge life and dimension repeatability.
5. Compatibility
Engineered for seamless integration into standard negative turning systems:
- Toolholders & Boring Bars: Fully compatible with MTJNR/L, PTJNR/L, and WTJNR/L series external turning toolholders and internal boring bars configured for TNMG 2204 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.
| ISO Material Category | Target Materials | NC3020 Performance Suitability |
|---|---|---|
| P (Steel) | Carbon steels, alloy steels, and structural steel billets | Outstanding (Optimized CVD Multi-Layer Grade for P10–P30 High-Speed Semi-Roughing & Finishing) |
| M (Stainless Steel) | Austenitic stainless steels | Limited (Dedicated M-class grades recommended) |
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: How many inserts are included in one standard box?
A: Each standard factory-sealed box contains exactly 10 pieces of TNMG220404-HM NC3020 inserts.
Q: What is the advantage of the 0.4mm corner radius over a 0.8mm radius?
A: The 0.4mm corner radius (-04) is designed for lighter depths of cut, lower feed rates, and sharper corner profiling, making it ideal for semi-finishing and finishing where tighter component profiles are required.
Q: Is NC3020 suitable for continuous high-speed steel machining?
A: Yes, NC3020 is specifically formulated with a multi-layer CVD coating to excel in high-speed, continuous, and stable cutting conditions on carbon and alloy steels.
Need Help With KORLOY Inserts?
Looking for a KORLOY equivalent, alternative grade, or sample catalog? Our CNC specialists have helped 50+ manufacturers in aerospace, automotive, and medical machining source the right tooling at 30–50% lower cost than OEM prices.
This KORLOY insert is in stock. 24-hour quote response. ISO 9001 certified. Ships from Hangzhou in 3–7 days.
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.