GC - Corner Radius End Mills - For Mold Steel - 4-Flutes

Overview

GC Series Plastic Mold End Mills Crafted for semi-finishing and finishing of plastic mold steels. Made from ultra-fine grain carbide with TiAlSiN coating, these end mills deliver stable cutting, excellent wear resistance, and long tool life.
4-Flute Corner Radius End Mills are ideal for cavity bottoms and side wall transitions. The radius edge design disperses cutting stress, improves chipping resistance, and delivers smoother surface transitions.

Substrate & Coating

• Substrate: Ultrafine-grain carbide with a balanced combination of high hardness and toughness.
• Coating: TiAlSiN nanocomposite coating — high surface hardness, excellent wear and high-temperature oxidation resistance, effectively extending tool life.

Cooling Recommendation

Optimized for air cooling or Minimum Quantity Lubrication (MQL); use flood coolant for heavy cuts. Dry cutting possible for short passes but not recommended long term.

Cutting Capability

• Workpiece Hardness: ≤ HRC48
• Typical Materials: P20 / 1.2311, 718 / 1.2738, 718H, NAK80, 4Cr13H, S136, 1.2085
• Note: Not suitable for hardened steels exceeding HRC48 after heat treatment.

Edge & Flute Design

• Edge honing and reinforced radius to extend tool life and reduce micro-chipping
• Optimized 4-flute flute form for smooth chip flow and steady cutting forces