Korloy Indexable Turning Insert VNMG160408-HM NC3030 | VNMG 432-HM (Imperial Equivalent) CVD Coated Carbide Inserts for General Steel and Alloy Machining - 10pcs Box
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Korloy Indexable Turning Insert VNMG160408-HM NC3030 | VNMG 432-HM (Imperial Equivalent) CVD Coated Carbide Inserts for Steel & Alloy Roughing - 10pcs Box
High-Performance ISO-Standard 35° Rhombic Negative Indexable Turning Cutters for Industrial Carbon Steels, Alloy Steels, and General Medium-to-Heavy Machining Operations
1. Product Overview
"Which indexable turning insert is best suited for stable roughing and general turning of carbon steel and alloy steel where high wear resistance, thermal stability, and reliable chip control under heavy cutting loads are required?" CNC operators and manufacturing engineers frequently select the Korloy VNMG160408-HM NC3030. This industrial-grade indexable carbide turning insert features an advanced high-performance NC3030 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, an optimal 0.8mm corner radius for balanced strength and profiling versatility, and a specialized -HM chipbreaker engineered with a robust double-land profile to withstand heavy cutting depths, resist crater wear, and ensure controlled chip breaking during demanding steel turning passes.
2. Product Key Features
- NC3030 Advanced CVD Coated Grade Technology: A tough carbide substrate combined with a multi-layer thick CVD coating engineered to maximize wear resistance, thermal crack resistance, and long tool life in steel turning applications.
- Optimized -HM General Chipbreaker Geometry: Dual-land reinforcement design providing high cutting edge strength for general-to-heavy steel roughing without sacrificing cutting sharpness.
- 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 | VNMG160408-HM | VNMG 432-HM |
| 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 (08) | 0.8 mm | 0.0313 inch (2 radius designation scale / 1/32") |
Recommended Cutting Parameters (Feed & Speed)
| Workpiece Material Group | Cutting Speed (vc) m/min | Feed Rate (f) mm/rev |
|---|---|---|
| Carbon Steels & Low Alloy Steels (P15 - P35) | 150 - 280 | 0.22 - 0.48 |
| Alloy Steels & Cast Steel (P25 - P45) | 120 - 220 | 0.20 - 0.42 |
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 VNMG160408-HM NC3030 insert delivers outstanding reliability across heavy manufacturing, automotive components, structural engineering, and general industrial machining:
- Automotive Transmission & Axle Shafts: High-efficiency roughing passes on forged alloy steel components under interrupted conditions.
- Industrial Gear Blanks: Deep stock removal and profile turning on medium carbon steel forgings.
- General CNC Machine Shops: Versatile medium-to-heavy stock removal operations requiring dependable tool life and constant chip flow.
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-power CNC lathes, heavy-duty turning centers, and vertical turning lathes (VTL).
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 steels, alloy steels, and structural steel castings | Excellent (Dedicated CVD Grade Optimized for Tough Steel Roughing & Interrupted Cuts) |
| M (Stainless Steel) | Austenitic and ferritic stainless steels | Moderate (Use specialized PVD grades like PC9030 for dedicated stainless work) |
| K (Cast Iron) | Grey cast iron and ductile nodular iron | Good (Applicable for light turning under stable conditions) |
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 primary advantage of the NC3030 grade when machining steel under heavy roughing conditions?
A: NC3030 features an optimized tough substrate combined with a high-adhesion CVD coating designed specifically to resist thermal cracking and chipping during heavy steel roughing and interrupted turning passes.
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 -HM chipbreaker suitable for continuous and light interrupted cuts in steel?
A: Yes. The robust double-land design of the -HM geometry provides excellent edge toughness to handle continuous turning as well as interrupted cuts smoothly.
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.