KORLOY CNMG120404-HA NC3020 Indexable Carbide Turning Inserts | CNMG431-HA NC3020 (ANSI Equivalent) CVD Coated Carbide Inserts for Steel and Alloy Steel Machining - 10pcs/box
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KORLOY CNMG120404-HA NC3020 Indexable Carbide Turning Inserts | CNMG431-HA NC3020 (ANSI Equivalent) CVD Coated Carbide Inserts for Steel and Alloy Steel Machining - 10pcs/box
High-Performance ISO-Standard 80° Rhombic Negative Indexable Turning Cutters Featuring NC3020 Advanced CVD Coated Carbide Substrate and -HA Sharp Positive Chipbreaker for Superior Steel and Alloy Steel Turning
1. Product Overview
"Which indexable turning insert is best suited for stable to semi-stable finishing and light continuous machining of carbon steel, alloy steel, and structural steels while ensuring optimal chip control?" CNC machinists and manufacturing engineers consistently select the KORLOY CNMG120404-HA NC3020. This industrial-grade turning insert features KORLOY's advanced NC3020 CVD multi-layer coated carbide substrate optimized for wear resistance and thermal shock stability, combined with a specialized -HA sharp positive chipbreaker geometry. It delivers exceptionally low cutting resistance, reduced cutting forces, and excellent prevention of built-up edges during finish turning operations. Built on a rigid 80° rhombic negative profile with 4 indexable cutting edges and a precise 0.4mm corner radius, it guarantees tight dimensional tolerances and superior surface finishes.
2. Product Key Features
- NC3020 CVD Coated Grade: Features an advanced chemical vapor deposition (CVD) multi-layer coating engineered to provide high wear resistance, crater wear protection, and thermal durability in steel turning applications.
- -HA Sharp Chipbreaker & 0.4mm Radius: Combines a sharp positive rake angle geometry for low cutting forces with a precision 0.4mm corner radius for accurate profile finishing.
- Double-Sided Indexable Economy: Rhombic negative configuration provides 4 total indexable cutting edges (2 per side), maximizing tool economy and reducing per-part tooling costs.
- Standard Industrial Packaging: Supplied in secure factory containers containing 10 pieces for efficient tool inventory management.
3. Technical Specifications & Model Breakdown
Review the comprehensive technical parameters, metric-to-imperial cross-references, and ISO nomenclature breakdown below.
Metric vs. Imperial Designation Comparison
| Specification Parameter | Metric Standard (ISO) | Imperial Equivalent (ANSI) |
|---|---|---|
| Primary Insert Model | CNMG120404-HA NC3020 | CNMG431-HA NC3020 |
| 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 (~1/64") |
Recommended Cutting Parameters (Feed & Speed)
| Workpiece Material Group | Cutting Speed (vc) m/min | Feed Rate (f) mm/rev |
|---|---|---|
| Carbon Steel & Low Alloy Steel (e.g., C45, 4140) | 180 - 320 | 0.08 - 0.25 |
| Alloy Steel & Tool Steel | 140 - 260 | 0.06 - 0.20 |
Need matching MCLNR/L or PCLNR/L external turning toolholders for your CNMG 1204 inserts?
Explore Compatible External Turning Tool Holders & Boring Bars4. Product Application Scenarios
The KORLOY CNMG120404-HA NC3020 insert is optimized for precision steel turning across major manufacturing sectors:
- General Machinery & Industrial Equipment: Finishing transmission shafts, gear blanks, and precision steel spindles.
- Automotive Powertrain: Machining forged steel steering knuckles, axle shafts, and crankshaft components.
- Energy & Valve Manufacturing: Turning valve stems, actuator components, and alloy steel connectors.
5. Compatibility
Engineered for universal integration with standard ISO negative toolholding systems:
- Toolholders: Fully compatible with standard MCLNR/L, PCLNR/L, and CCLNR/L lever-lock and pin-and-clamp external turning toolholders designed for CNMG 1204 geometry.
- Machine Equipment: Fully compatible with CNC lathes, CNC turning centers, and multi-axis mill-turn machines.
6. Material Comparison & Workpiece Matrix
Examine grade application suitability across ISO workpiece material classifications.
| ISO Material Category | Target Materials | NC3020 Performance Suitability |
|---|---|---|
| P (Steel) | Carbon steel, alloy steel, structural steel, and free-machining steel (e.g., C45, 4140, 20MnCr5) | Optimal (Primary CVD Coated Grade for Finishing to Light Roughing P10–P30) |
| M (Stainless Steel) | Austenitic and martensitic stainless steel components | Conditional (Suitable for occasional light finishing passes under stable setup 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 downtime.
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 each box?
A: Each standard factory box contains exactly 10 pieces of CNMG120404-HA NC3020 inserts.
Q: What workpiece materials are ideal for the NC3020 grade?
A: NC3020 is a dedicated CVD coated grade engineered specifically for carbon steels, alloy steels, and structural steels (ISO P10–P30 range).
Q: Which toolholders fit this CNMG 1204 insert?
A: It fits standard ISO negative turning toolholders designed for CNMG 1204 geometry, such as MCLNR or PCLNR external toolholder bars.
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.