HRC65 Mold Steel Long Neck Corner Radius End Mill【4 Flutes Φ1-4】

HRC65 Long-Neck Round Nose End Mill for High-Hardness Steel (HRC48–62)

Engineered for High-Hardness Steel Machining
Designed specifically for high-hardness materials ranging from HRC48 to HRC62, this end mill delivers exceptional performance in demanding applications involving hardened mold steels such as SKD61, S136, and NAK80. Its ultra-fine tungsten carbide substrate combined with an advanced HG coating ensures outstanding wear resistance and thermal crack resistance, even under high-speed and high-temperature conditions.

Optimized 4-Flute Geometry for Efficient Finishing
The four-flute configuration offers an ideal balance between machining efficiency and surface finish quality. It enhances cutting stability and significantly increases metal removal rates, making it suitable for semi-finishing and finishing operations. Ideal for high-precision machining of complex 3D contours in mold cavities and dies.

Long-Neck Design for Deep Cavity and Narrow-Area Access
The extended neck geometry improves tool reach and flexibility in hard-to-access areas such as deep cavities, tight corners, and vertical walls. It reduces the risk of tool interference and enhances accessibility in high-walled and deep-groove structures—essential for intricate mold and die components.

Corner Radius Tip Improves Strength and Tool Life
The corner radius design minimizes stress concentration at the cutting edge, improving tool stability and reducing the likelihood of chipping or fracture. This leads to better surface integrity and longer tool life, especially when tight dimensional tolerances and smooth finishes are required.

HG Coating for Extreme Heat and Wear Resistance
Featuring a high-performance HG coating with an oxidation resistance temperature above 900°C and a low coefficient of friction, the tool retains sharpness even under dry or semi-dry cutting conditions. This significantly extends tool life and reduces downtime, boosting productivity in high-speed machining environments.

Precision CNC Ground for Dimensional Accuracy and Repeatability
Each tool is manufactured using state-of-the-art 5-axis CNC grinding machines to achieve tight tolerances on the tip, neck, and corner radius. This guarantees exceptional dimensional stability and consistency—critical for high-precision applications in modern CNC machining centers.