Cast iron insert grades offer greatly improved results

Two new K milling grades - GC1020 and GC3220 – are the latest introductions for cast iron applications offering greatly improved results in this competitive area. Complementing the recent advances in steel milling with the upgraded GC1030 and GC4240 inserts, the cast iron area will be boosted by improved toughness and wear resistance with the two latest grades being highly versatile and designed to handle a wide range of operations. Sandvik Coromant describes GC1020 as ‘an excellent all rounder’ and the new first choice insert for nodular cast iron and all wet cast iron machining. A strong PVD coating guarantees higher cutting speeds and reduced wear rates and, as a reliable and secure performer in unstable conditions, it is particularly suited for use with the CoroMill 390 milling cutter. With the thickest protective coating for a milling insert, GC3220 offers big improvements in durability and wear resistance, optimised for the dry machining of grey cast iron. Designed to excel in shoulder and face milling with the CoroMill range – especially larger diameter cutters – GC3220 offers a smooth and reliable machining experience. These two grades will enhance existing geometries and are available in a wide selection of inserts for CoroMill cutters, pushing further the boundaries of cast iron milling productivity.