System charts Grafici applicativi Anwendungsgrafiken Graphiques d’application Gráficos aplicativos Диаграммы CAST IRON APPLICATION HB hardness ISO K 400 SUH, 300 PU+ 200 HPU+ TA+ 100 HTA+ 4HTA+ HHL+L SUUHHmini+ 50 100 150 200 Vc [m/min] + 1st choice , suitable NON-FERROUS MATERIALS APPLICATION Si % ISO N 20 16 SUH, 12 PU, HPU, 8 HTA, HL, 4HTA, SUH mini, 4 ALH+ 150 200 250 300 Vc [m/min] TA : general purpose (page 51) + 1st choice , suitable HTA : general purpose with inside coolant (page 51) 4HTA : 4 margins general purpose with inside coolant (page 51) PU : universal purpose (page 81) HPU : universal purpose with inside coolant (page 81) SUH : special purpose with inside coolant (page 103) ALH : special purpose with inside coolant (page 117) SUH MINI : miniature 5xD ÷ 30xD with inside coolant (page 133) HL : long 12xD ÷ 30xD (page 165) 49