System charts Grafici applicativi Anwendungsgrafiken Graphiques d’application Gráficos aplicativos Диаграммы CAST IRON APPLICATION HB hardness ISO K 400 300 HSSP+ 200 100 HSS/Co+ 30 40 50 60 Vc [m/min] + 1st choice , suitable NON-FERROUS MATERIALS APPLICATION Si % ISO N 16 14 12 10 8 HSS/Co+ 60 80 100 120 Vc [m/min] HSS/Co : general purpose (page 658) + 1st choice , suitable HSSP : high performance (page 658) 655