New milling grade for predictable tool life in titanium machining

Publié le 21/10/2026

Sandvik Coromant combines EthaCore™ carbide technology and Zertivo® technology in the GC1250 grade to improve process security and reduce the carbon footprint of its tools.

Sandvik Coromant, a leading manufacturer of cutting tools and manufacturing solutions, has developed the GC1250 grade for indexable insert milling. This new grade is specifically designed for machining titanium alloys. This grade combines EthaCore™ carbide technology with a nano-multilayer PVD (physical vapor deposition) coating to optimize impact toughness, durability, process reliability, and reduce environmental impact.

Titanium's poor thermal conductivity causes intense heat concentrations to build up at the cutting edge, accelerating the risk of wear, chipping, and unexpected insert failure. The GC1250 grade solves these problems with a completely new structure that combines Sandvik Coromant's patented EthaCore™ carbide platform with Zertivo® nano-multilayer PVD coating technology.

The customer value proposition focuses on three key elements: innovation, performance, and sustainability. The resilient substrate has been designed to adapt to changing thermomechanical loads, helping to increase tool life predictability, reduce unexpected failures, and prevent potential production downtime.

" The GC1250 grade sets a new standard in titanium milling with its incredible performance in terms of impact toughness and predictability ," says Wayne Mason, Global Product Application Manager for Grades at Sandvik Coromant. " By reducing the number of insert breakages and unexpected stoppages, this grade is a solution that helps customers optimize machine utilization and the cost-effectiveness of their machining processes ."

The GC1250 grade also contributes to achieving sustainability goals. EthaCore™ achieves a substantially lower carbon footprint than leading competitor grades, which instead use ruthenium-based carbide in this application.

" Advances in performance and sustainability increasingly need to go hand in hand, " adds Mason. " The GC1250 is a solution that enables safe and profitable machining of titanium while reducing the carbon footprint associated with the tools needed to machine it ."

Grade GC1250 is optimized for roughing to semi-finishing operations in titanium alloys. It is designed for wet machining and is available for a wide range of CoroMill® concepts for shoulder milling, face milling, slot milling, high-feed milling, and profiling.

The introduction of the GC1250 grade also completes the 1200 series, creating a comprehensive offering covering all major processing material groups. Customers now have access to the most advanced coating and substrate technologies for a wide range of applications.

Sandvik Coromant

Together with our customers and partners, Sandvik Coromant provides tooling solutions to metalworking industries worldwide. Over eighty years of practical experience have allowed us to build a wealth of knowledge in metal cutting and machining. This expertise transforms every challenge into an opportunity for innovation, collaboration, and cutting-edge solutions. Our goal is to drive positive change by fostering efficiency and growth to shape a future where innovation is at the forefront. Part of the global industrial engineering group Sandvik, Sandvik Coromant is committed to building the future, together with its customers.

Pour plus d’informations: Sandvik Coromant

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