Korloy Indexable Turning Insert VNMG160404-HS NC3020 | VNMG 431-HS (Imperial Equivalent) CVD Coated Carbide Inserts for Steel and Alloy Finishing - 10pcs Box
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Korloy Indexable Turning Insert VNMG160404-HS NC3020 | VNMG 431-HS (Imperial Equivalent) CVD Coated Carbide Inserts for Steel & Alloy Finishing - 10pcs Box
High-Performance ISO-Standard 35° Rhombic Negative Indexable Turning Cutters for Carbon Steels, Alloy Steels, and Precision Finishing Operations
1. Product Overview
"Which indexable turning insert is best suited for precision finishing and light profiling of carbon steels and alloy steels where exceptional wear resistance, high edge sharpness, and reliable chip evacuation at low feed rates are required?" CNC operators and manufacturing engineers frequently select the Korloy VNMG160404-HS NC3020. This industrial-grade indexable carbide turning insert features an advanced high-performance NC3020 specialized CVD-coated grade optimized for general steel machining, combined with a 35° rhombic negative geometry providing 4 usable cutting edges (2 per side) for maximum economic efficiency, a tight 0.4mm corner radius for fine contouring and sharp internal corner profiling, and a specialized -HS chipbreaker engineered with a sharp positive rake face to minimize cutting forces, prevent burr formation, and ensure clean chip breakage during light finishing passes.
2. Product Key Features
- NC3020 Advanced CVD Coated Grade Technology: A tough wear-resistant carbide substrate combined with a multi-layer CVD coating engineered to maximize thermal resistance, prevent flank wear, and ensure extended tool life in steel turning.
- Optimized -HS Finishing Chipbreaker Geometry: Sharp positive rake angle design providing low cutting resistance and precise chip control during light depth-of-cut finishing applications.
- ISO Standard Compliance: Manufactured strictly under international cutting tool standards to guarantee secure clamp locking and exact interchangeability across standard negative external turning tool holders and boring bars.
- Industrial Package: Supplied in factory-sealed boxes of 10 pieces to streamline workshop tool crib inventory 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 and turning tool holder integration.
Metric vs. Imperial Designation Comparison
| Specification Parameter | Metric Standard (ISO) | Imperial Equivalent (ANSI) |
|---|---|---|
| Primary Insert Model | VNMG160404-HS | VNMG 431-HS |
| Inscribed Circle / Size | 16.07 mm (16 series scale equivalent) | 1/2" nominal scale equivalent (4 series) |
| Insert Thickness (04) | 4.76 mm (3/16" thickness class) | 0.1875 inch (3 series / 3/16" scale equivalent height class) |
| Corner Radius (04) | 0.4 mm | 0.0156 inch (1 radius designation scale / 1/64") |
Recommended Cutting Parameters (Feed & Speed)
| Workpiece Material Group | Cutting Speed (vc) m/min | Feed Rate (f) mm/rev |
|---|---|---|
| Carbon Steels & Low Alloy Steels (P10 - P30) | 180 - 320 | 0.10 - 0.25 |
| High Alloy Steels & Tool Steels (P20 - P40) | 140 - 260 | 0.08 - 0.22 |
Need matching MVJNR/L or PVJNR/L external turning tool holders for your 1604 VNMG inserts?
Explore Compatible Turning Tool Holders & Boring Bars4. Product Application Scenarios
The Korloy VNMG160404-HS NC3020 insert delivers outstanding reliability across automotive transmission shafts, general machinery components, mold manufacturing, and precision steel turning:
- Automotive Powertrain Shafts & Gears: High-precision finishing and profile turning on hardened and alloyed steel components.
- Industrial Machinery Spindles: Tight-tolerance finishing passes on high-strength carbon steel structural parts.
- Mold & Die Core Machining: Fine contouring on pre-hardened alloy steels and die blocks.
5. Compatibility
Engineered to integrate seamlessly into standard negative industrial turning systems:
- Tool Holders & Boring Bars: Fully compatible with MVJNR/L, PVJNR/L, and DVJNR/L negative lever-lock and pin-lock external tool holders configured for VNMG 1604 series inserts.
- CNC Machinery: Optimized for high-precision CNC lathes, multi-axis turning centers, and heavy-duty turning systems.
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 steels, alloy steels, and tool steels | Excellent (Dedicated CVD Grade Optimized for Steel Finishing & Wear Resistance) |
| M (Stainless Steel) | Austenitic and martensitic stainless steels | Moderate (Applicable for light finishing under stable conditions) |
| K (Cast Iron) | Grey cast iron and ductile iron | Not Recommended (Cast iron requires specialized K-grades) |
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: Why is the NC3020 grade specifically recommended for carbon steel and alloy steel finishing?
A: NC3020 utilizes an advanced multi-layer CVD coating combined with a tough carbide substrate that effectively resists crater wear, thermal deformation, and abrasive wear during high-speed steel turning operations.
Q: How many inserts are included in each factory package?
A: Each standard industrial box contains 10 factory-sealed indexable turning inserts, securely packed to prevent edge contact during transit.
Q: Is the -HS chipbreaker suitable for light finishing and precise contour profiling?
A: Yes. The sharp positive rake geometry of the -HS breaker minimizes cutting forces and prevents burrs, making it ideal for tight-tolerance steel finishing passes.
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.