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
When choosing CNC cutting tools, check the full model code, dimensions, grade and selected variant before ordering. Do not rely on the product image alone.
For carbide inserts, tool holders, drills and end mills, compare the mounting dimensions, connection type and manufacturer's specifications with your holder or machine. If you are unsure, share your existing part number and machining application with us before ordering.
Check the product listing for the selling unit, pack quantity and included components. If it is unclear whether the price is per piece or per pack, or whether a tool body and inserts are sold separately, contact us before purchasing.
Select cutting speed, feed rate and depth of cut using the relevant manufacturer's recommendations for your tool model, workpiece material, machine conditions and coolant method. The same settings are not suitable for every product or application.
Our automatic quantity discount is 6% off for 2–9 items and 12% off for 10 or more items, based on the total product quantity in the cart. Other offers may not combine with this discount; check the applicable offer conditions.
According to our shipping policy, orders are typically processed and shipped within 1–3 business days after confirmation. Delivery generally takes 5–20 business days, depending on your destination and shipping method. Customs clearance or unforeseen delays may affect delivery times. A tracking number is sent by email after shipment.