soft hard Product System Tapping Ratio of threaded holes produced in steel world wide based on material type Tapping method St44-2 C30 C45 Alloy steels speed Low carbon steels Medium carbon igh carbon 25CrMo4 steels steels C30 C45 42Cr4 20m/min igh 20m/min Area of full rigid lead feed series 15m/min AUXSP AUXSL 15m/min >>> 67P >>> 108P series 10m/min AU+SP AU+SL 10m/min >>> 65P >>> 106P t n r series Tapping speed SP PO HT 5m/min >>> 52P >>> 114P >>> 134P 5m/min Area of free feed n ima e tellin ossible a lications 2