System charts Grafici applicativi Anwendungsgrafiken Graphiques d’application Gráficos aplicativos Диаграммы CAST IRON APPLICATION HB hardness ISO K 400 SUH, 300 TA+ 4HTA+ PU+ HPU+ 200 100 HL+ SUH mini+ 50 100 150 200 Vc [m/min] H 1st choice I suitable NON-FERROUS MATERIALS APPLICATION Si % ISO N 20 16 SUH, 12 PU, HPU, 8 4HTA, HL, SUH mini, 4 ALH+ 150 200 250 300 Vc [m/min] PU : universal purpose (page 43) H 1st choice I suitable HPU : universal purpose with inside coolant (page 43) TA : general purpose (page 66) 4HTA : 4 margins general purpose with inside coolant (page 70) SUH : special purpose with inside coolant (page 79) ALH : special purpose with inside coolant (page 93) SUH MINI : miniature 5xD ÷ 30xD with inside coolant (page 114) HL : long 12xD ÷ 30xD (page 147) 39