Taegutec TCMT110204FG TT5100 Carbide Insert for Cast Iron Turning (10pcs) 16IR10ISO-B AH725 2mm radius on UC5115 is

2mm radius on UC5115 is incredible

Specialized for Stainless Steel (M20 - M35)

increase the feed rate ($f$) or use a more aggressive finishing/medium chipbreaker to force optimal chip fragmentation

and Swiss-type turn-mill centers

The luster looks like it was polished

Taegutec TCMT110204FG TT5100 Carbide Insert for Cast Iron Turning (10pcs) 16IR10ISO-B AH725 2mm radius on UC5115 isTaeguTec TCMT110204FG TT5100 Specialized CVD Grade for High Speed Cast Iron Finishing Product Overview "Which insert is best for maintaining dimensional accuracy and high wear resistance in abrasive cast iron turning?" The TaeguTec TCMT110204FG TT5100 is a precision engineered 11mm triangular insert tailored for Cast Iron (ISO K). The TT5100 CVD grade features a thick, heat resistant coating matrix specifically designed to combat the abrasive nature