Sandvik Coromant Debuts New Steel Milling Grade

Sandvik Coromant recently launched GC1230, a new indexable milling grade designed for high metal removal rates in stable conditions.

Produced with Zertivo coating process technology, GC1230 excels in both edge line toughness and wear resistance according to the company. “GC1230 has a groundbreaking coating innovation, delivering exceptional performance with security, predictability and sustainability. It is the first choice for steel milling applications,” said Wayne Mayson, global product application manager for grades at Sandvik Coromant.

GC1230 can extend tool life, boost productivity and provide a more sustainable milling approach. GC1230’s new coating provides edge line toughness, resulting in significantly extended tool life and more pieces per edge. Due to its high heat resistance capabilities, shops can maximize cutting speed to achieve high metal removal rates and boost productivity by reducing machining and cycle time. CG1230’s performance in dry machining conditions makes it a sustainable alternative to coolant-based methods, contributing to more eco-friendly milling.

Comprehensive tests conducted between the existing grade GC1130 and the new grade GC1230 demonstrate the latter’s superior strengths and versatility—it is strong all over. The new grade builds upon the success of grade GC1130 but has a wider application coverage, due to increased toughness and wear resistance capabilities at even higher cutting data. The edge line security of GC1230 stands out, but heat resistance, crater and wear resistance, and tool life in both P1 and P2 material are also far superior to its predecessor, Sandvik Coromant claims.

“This new steel milling physical vapor deposition (PVD) grade innovation is comprised of a nano multilayer TiAlN and TiSiN coating with improved adhesion—a coating technology that is improved in all directions of performance capability,” Mayson stated. “In short, it is stronger for longer, whether used in wet or dry steel milling applications.”

Optimized for light roughing to finishing operations, GC1230 is ideal for a wide range of applications, from general to more challenging tasks such as square shoulder milling, complex tool paths, and deep cavities, in both wet and dry conditions. It is suitable for all industry segments and various component features.

Together with customers and partners, Sandvik Coromant supplies tooling solutions to engineering industries. More than eight decades of hands-on experience have given the company a wealth of knowledge in metal-cutting and machining. This expertise transforms every challenge into an opportunity for innovation, collaboration, and progressive solutions. Sandvik Coromant aims to create positive change by promoting sustainability, efficiency, and growth to shape a future where innovation thrives. Sandvik Coromant is part of global industrial engineering group Sandvik.