4 Flute Roughing End Mill for Steel with AlTiN Coating High Performance Carbide Router Bit for CNC Milling

Introduction:

The 4-Flute Roughing End Mill with AlTiN Coating is a premium-grade carbide cutting tool designed for aggressive material removal in steel and other tough metals. Engineered with a high-efficiency 4-flute design and AlTiN (Aluminum Titanium Nitride) coating, this end mill delivers exceptional durability, heat resistance, and extended tool life in high-speed CNC machining applications. The specialized roughing geometry ensures reduced vibration, improved chip evacuation, and superior surface finish, making it ideal for heavy-duty milling operations.

Features:

✔ High-Performance AlTiN Coating – Provides extreme heat resistance (up to 900°C) and reduces friction, offering 3X longer tool life compared to uncoated or TiN-coated end mills.

✔ 4-Flute Design for Roughing – Optimized for high material removal rates (MRR) while maintaining stability and reducing chatter in steel and alloy machining.

✔ Solid Tungsten Carbide Construction – Ensures maximum rigidity, wear resistance, and precision for demanding CNC milling applications.

✔ Variable Helix & Pitch Geometry – Minimizes vibration and harmonics, enabling smoother cuts and improved surface finish.

✔ High-Speed CNC Compatible – Precision-ground for excellent balance and concentricity, suitable for high-RPM machining centers and CNC routers.

✔ Coolant-Ready – Compatible with flood coolant or MQL (Minimum Quantity Lubrication) for enhanced heat dissipation and chip control.

Advantages:

• Faster Machining – Aggressive cutting geometry allows for higher feed rates without sacrificing tool life.

• Reduced Vibration – Engineered flute design ensures smoother operation in challenging materials.

• Longer Tool Life – AlTiN coating significantly reduces wear, lowering production costs.

• Versatile Performance – Suitable for dry or wet machining conditions.

Applications:

✅ Carbon & Alloy Steels – Including pre-hardened steels (up to HRC 45).

✅ Stainless Steel (303, 304, 316) – Ideal for roughing and semi-finishing.

✅ Cast Iron & Ductile Iron – High-efficiency milling for automotive and industrial parts.

✅ Tool & Die Making – Mold bases, cavities, and heavy machining operations.

✅ General Metalworking – Aerospace, automotive, and heavy machinery components.

Detailed Pictures:

Our workshop:

New Customer Special Offers:

To help you experience our premium products, we’re excited to offer the following exclusive promotions for first-time buyers:

1.Free Test Samples

Get free samples (total value ≤ $20 USD) when you cover the international shipping cost.

Perfect for evaluating our product quality and performance risk-free.

2.$50 USD Discount on First Order

New customers can enjoy a $50 discount on the first order of $500 or more.

A great way to start our partnership with extra value!

Our advantages:

1.Advanced grinding machines: All of our grinding machines are WALTER and SAACKE brands.

2.Advanced inspection machines: We have ZOLLER, OMEGA, PG1000, etc. For inspecting each carbide tools.

3.Fast feedback: we offer 24 hours online service

4.Strict quality control system:
We strictly adhere to a three-stage inspection process for each tool:
Raw material inspection
Semi-finished product inspection after production
Final inspection after coating (pre-shipment check)

Related products:

  CHANGZHOU AMG PRECISION TOOL MANUFACTURING CO., LTD. is a leading manufacturer and solution provider specializing in high-performance carbide cutting tools for precision CNC machining applications. With a strong commitment to innovation and quality, we design and produce an extensive range of standard and custom cutting tools, including carbide drill bits, end mills, reamers, and complex non-standard forming tools tailored to meet the most demanding machining challenges.