GC1240 features an innovative nano-multilayer PVD coating produced with the state-of-the-art Zertivo coating technology. This provides exceptional resistance to thermal cracking and abrasive wear. The stable cutting edge ensures safe machining with predictable tool life – from light roughing to finishing under wet or dry conditions.
Thanks to the continuous development of Zertivo, Sandvik Coromant's unique PVD production technology, the capabilities of GC1240 are significantly enhanced. The advanced nano-multilayer coating, a combination of TiAlN and TiSiN, unites the rare properties of edge hardness and wear resistance. Conventional grades typically require a trade-off between these properties.
Wayne Mayson, Global Product Application Manager for grades at Sandvik Coromant, highlights the performance advantages of GC1240: "GC1240 has enormous capabilities for machining stainless steel at higher cutting speeds under dry conditions – in some cases up to 20 percent higher than with wet machining. This not only reduces energy consumption but also allows for more parts to be produced in a shorter time. Additionally, less coolant is needed, contributing to a reduction in CO2 emissions and improved sustainability."
He further explains: "GC1240 is the first choice among insertable cutting inserts for milling stainless steel, especially austenitic materials, under stable conditions. Here, GC1240 enables higher productivity, lower costs per part, and new sustainability opportunities through impressive and concrete results. Users who try GC1240 will definitely not be disappointed."
The reliability-focused grade GC1240 is designed for harsh machining conditions. Under these conditions, chipping and breakage often limit tool life. Due to its dry running capability, it is ideal for applications where no or minimal coolant should be used.
The grade GC1240 is recommended for light roughing to finishing of stainless steels with its strong, positive, and sharp geometries. It can also be effectively used on heat-resistant superalloys and titanium at the recommended cutting speeds. Currently, a total of 13 CoroMill series are available with grade GC1240, including 77 individual items.
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