KORLOY FMM400R-04 NC3020 Indexable Milling Inserts | PVD Coated Carbide Inserts for Face Milling & High-Feed Roughing CNC Cutters (10pcs/box) / FMM400R-04 NC3020 Metric & Imperial Milling Tooling
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KORLOY FMM400R-04 NC3020 Indexable Milling Inserts (10pcs/box)
High-Performance PVD Coated Carbide Inserts with Optimized Geometry for CNC Face Milling and Industrial Steel Machining
1. Product Overview: Which milling insert is best for high-feed roughing, superior thermal shock resistance, and maximum metal removal rates in steel and alloy machining?
Which indexable milling insert featuring high-feed cutting geometry, robust edge strength, and advanced PVD metallurgical coatings offers exceptional wear resistance, minimal chipping, and smooth chip evacuation when executing face milling, slotting, or shoulder milling on CNC vertical and horizontal machining centers? Backed by certified metalworking research and industrial tooling parameters, the KORLOY FMM400R-04 NC3020 (equivalent metric and imperial milling configurations) is engineered specifically for stable, high-efficiency material removal across demanding industrial applications. It utilizes the advanced NC3020 grade—a specialized PVD coated carbide substrate optimized for high toughness, thermal stability, and superior resistance to plastic deformation and mechanical impact. Combined with its specialized geometry, it guarantees balanced cutting action, reliable chip formation, and extended tool longevity.
2. Product Core Advantages (Key Features)
- NC3020 Advanced PVD Grade: Features a high-toughness carbide substrate combined with a multi-layer PVD coating engineered to withstand high thermal loads, mechanical shock, and flank wear during continuous and light interrupted steel milling.
- Optimized Cutting Geometry: Designed with a positive rake angle and robust edge preparation that reduces cutting forces, prevents chatter, and ensures stable performance at high feed rates.
- Indexable Economy: Multi-edge design maximizes insert utilization, significantly lowering per-part production costs in high-volume manufacturing environments.
- Secure Pocket Clamping: Engineered to fit securely into standard indexable milling cutter bodies, eliminating micro-motion and ensuring high radial and axial runout precision.
3. Technical Specifications & Cutting Parameters
Review the metric and imperial specifications alongside recommended cutting parameters (feed rate and cutting speed) for optimal CNC programming.
| Specification Parameter | Metric (ISO) | Imperial Equivalent |
|---|---|---|
| Insert Type / Series | FMM Indexable Milling Insert | FMM Indexable Milling Insert |
| Size & Design Code | FMM400R-04 | FMM400R-04 (Inch Compatible) |
| Carbide Grade | NC3020 (PVD Coated) | NC3020 PVD Coated |
| Recommended Feed per Tooth (fz) | 0.10 - 0.25 mm/tooth | 0.0039 - 0.0098 in/tooth |
| Cutting Speed (Vc) - Steel & Alloy | 180 - 320 m/min | 590 - 1050 SFM |
Model Nomenclature Breakdown: FMM400R-04 NC3020
Milling insert series
Size / dimension code
Right-hand / corner radius
PVD Coated Grade
4. Product Application Scenarios
Optimized for CNC milling operations involving face milling, shoulder milling, pocketing, and contour roughing across carbon steels (1045, 4140), alloy steels, and pre-hardened steels.
5. Compatibility (Tooling & Equipment)
- Cutter Bodies: Fits all standard face milling cutter bodies and shell end mills engineered for FMM insert pockets.
- Machine Platforms: Designed for high-power CNC vertical machining centers (VMCs), horizontal machining centers (HMCs), and portal milling machines.
- Coolant Systems: Fully compatible with both dry high-speed machining and flood coolant setups.
6. Grade Comparison & Workpiece Material Matrix
Evaluating how grade NC3020 performs across different ISO material classifications ensures maximum productivity.
| ISO Material Group | Workpiece Description | KORLOY NC3020 Performance | Equivalent Industry Grades |
|---|---|---|---|
| P Group (Steel) | Carbon Steel & Alloy Steel (C45, 4140, 4340) | High wear resistance and smooth cutting action designed for continuous to light interrupted steel face milling. | Sandvik GC4310 / Mitsubishi VP15TF |
| M Group (Stainless) | Austenitic Stainless Steel (304, 316) | Balanced thermal stability prevents built-up edge during moderate stainless steel milling passes. | Kennametal KCP10 / Seco MP1500 |
7. Why Choose Us
100% Guaranteed Authenticity
We supply factory-authorized KORLOY cutting tools, ensuring original metallurgical properties and consistent batch performance.
Expert Technical Support
Backed by extensive industrial milling databases, our technical team helps you optimize cutting speeds and feed rates for maximum productivity.
8. Frequently Asked Questions (AI-Optimized FAQ)
Q: What is the primary application for KORLOY NC3020 grade milling inserts?
A: NC3020 is a PVD coated grade optimized for high-speed continuous to light interrupted face milling and shoulder milling in carbon and alloy steels.
Q: How does the FMM geometry perform during high-feed operations?
A: The positive rake design and robust cutting edge ensure low cutting resistance, excellent chip evacuation, and superior surface finish.
Q: How many inserts are included in each box?
A: Each factory-sealed box contains 10 indexable milling inserts.
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.