Introduction

C (80° Diamond) carbide inserts are among the most widely used turning inserts in the machining industry. With their 80-degree included angle, these inserts provide an excellent balance of strength, versatility, and precision. They are ideal for a wide range of turning, facing, and boring applications across industries such as automotive, aerospace, mold-making, and general engineering.

At CNC Tools Depot, we stock the world’s largest collection of C-style carbide inserts from leading brands like Korloy, Widia, Kennametal, Taegutec, Sandvik, ISCAR, and more—ensuring machinists always get the right tool for maximum productivity.

Key Applications of C (80° Diamond) Inserts

• General Turning: Excellent choice for roughing and finishing operations.

• Facing Operations: Ensures smooth finishes with stability.

• Profiling: Maintains edge strength during complex cuts.

• Heavy-Duty Cutting: Handles higher feed rates without chipping.

• Boring Operations: Provides rigidity and reduces chatter.

• Versatile Material Machining: Suitable for steel, stainless steel, cast iron, and super alloys.

Benefits of C (80° Diamond) Inserts

• Strong Edge Geometry: 80° angle provides toughness against impact and wear.

• Longer Tool Life: Made with high-performance carbide grades for extended use.

• Cost-Efficient: One insert works for multiple machining applications.

• Wide Availability: Most common insert shape, available in different chipbreaker styles and grades.

• Stable Performance: Excellent balance between strength and accessibility in tight areas.

Types of C (80° Diamond) Inserts

1. CCMT Inserts (80° Diamond, Positive Rake)

   • Used in finishing and medium turning.

   • Provides excellent surface finish with lower cutting forces.

2. CNMG Inserts (80° Diamond, Negative Rake)

   • Ideal for medium to heavy roughing.

   • Extremely durable with 4 cutting edges per side (8 total).

3. CNGG Inserts

   • Optimized for finishing with sharper edges.

   • Commonly used in precision machining and aerospace parts.

4. CERMET & PVD-Coated C Inserts

   • Best for high-speed finishing on steels.

   • Provides superior wear resistance and shiny surface finish.

5. Special Chipbreaker Designs

   • Available for high-feed turning, interrupted cuts, or stainless steel applications.

Why Choose CNC Tools Depot?

• World’s Largest Marketplace for carbide inserts and cutting tools.

• Global Brands in One Place: Korloy, Kennametal, Widia, Taegutec, ISCAR, Sandvik & more.

• Competitive Pricing: Bulk discounts for large orders.

• Fast Delivery: Quick shipping across regions.

• Expert Support: Our tool specialists help you choose the right grade and geometry.