Notable features of CTCS245 include a newly developed substrate that is said to be extremely tough and heat resistant. The substrate combines with a hard and smooth CVD TiB2 coating that is unique to Ceratizit. According to the company, the grade ensures process security and delivers significantly increased tool life.
For example, when machining Nimonic 80A material, which is commonly used in turbine blades, 12 mm button inserts were run at 45 m/min speed, 0.25 mm/tooth feed and 2 mm depth of cut. The use of CTCS245 grade inserts saw tool life increase by 100% from 62 minutes to 124 minutes in comparison with Ceratizit’s older CTC5235 grade. When used on Inconel 625 the gains were even greater, with tool life increasing 200%, even when the cutter was run at 38% higher cutting data than the competitor grade.
Although the initial focus has been on the aerospace sector, with the availability of button, high-feed, shoulder and face-milling inserts, CTCS245 is also finding success in other industries, such as medical, petrochemical, energy and subsea engineering.
