4 Flute Square End Carbide End Mill Long Reach TiSiN Coated CNC Milling Cutter for Steel HRC70

4 Flute Square End Carbide End Mill

Designed for high-performance CNC machining of steel and hardened materials, this 4 Flute Square End Carbide End Mill delivers exceptional rigidity, wear resistance, and machining efficiency. Manufactured from premium micro-grain solid tungsten carbide and enhanced with advanced TiSiN nano coating, it is optimized for high-speed machining of materials up to HRC70.

The long reach design allows deeper cavity machining and extended cutting applications while maintaining excellent cutting stability and dimensional accuracy. The 4-flute geometry provides increased metal removal rates and superior surface finish quality, making it ideal for roughing, semi-finishing, and finishing operations.

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Product Features

4 Flute High-Rigidity Design

The optimized 4-flute geometry provides:

• Higher material removal rates
• Improved tool rigidity
• Reduced vibration
• Better machining stability
• Excellent dimensional accuracy

Suitable for continuous CNC machining operations.

Square End Cutting Geometry

Designed for:

• Slot milling
• Side milling
• Pocket milling
• Contour machining
• Shoulder milling
• Precision finishing

Provides sharp corners and accurate machining results.

Long Reach Structure

The extended flute design enables:

• Deep cavity machining
• Mold component processing
• Long-reach side milling
• Deep pocket machining

While maintaining excellent machining stability.

Premium Solid Carbide Construction

Manufactured from high-quality tungsten carbide for superior hardness, toughness, and wear resistance.

Advanced TiSiN Nano Coating

The wear-resistant coating improves:

• Heat resistance
• Oxidation resistance
• Surface hardness
• Tool life

Ideal for high-speed machining of steel and hardened materials.

HRC70 Machining Capability

Optimized for machining hardened materials up to HRC70 while maintaining excellent cutting performance and durability.

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Applications

Widely used for:

• Slot Milling
• Side Milling
• Pocket Milling
• Shoulder Milling
• Contour Machining
• Mold Manufacturing
• Precision CNC Machining
• High Hardness Material Processing

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Suitable Materials

• Carbon Steel
• Alloy Steel
• Tool Steel
• Mold Steel
• Stainless Steel
• Cast Iron
• Hardened Steel (≤HRC70)

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Product Advantages

• High rigidity and cutting stability
• Excellent wear resistance
• Superior tool life
• High-speed machining capability
• Excellent surface finish quality
• Suitable for hardened materials
• Ideal for precision mold machining

Perfect for CNC machining centers, mold manufacturing, hardened steel machining, and industrial metalworking applications requiring maximum durability and machining precision.