Turning insert with a very tough substrate with MTCVD coating with a special SUMOTEC surface treatment. Recommended for machining stainless steel at moderate cutting speeds and medium to high feeds. Features very high toughness with excellent results in heavy machining operations, unstable conditions and interrupted cut. Insert for semi-finishing and finish turning. Chip breaking in moderate feed range. Positive rake, low cutting forces. Used for a wide range of materials including soft and exotic alloys.