MATERIALS HARDNESS/Rm P1 Free cutting steel and structural steel < 500 N/mm² P2 Carbon steel and low alloy steel 500-700 N/mm² P3 Medium alloy steel and heat treated steel 600-800 N/mm² P4 High alloy steel 800-1000 N/mm² P5 Tool steel 900-1200 N/mm² P6 High tensile strength steel 1200-1600 N/mm² M1 Ferritic stainless steel 400-700 N/mm² M2 Austenitic stainless steel (good machinability) 500-750 N/mm² M3 Austenitic stainless steel (medium machinability) 550-850 N/mm² M4 Martensitic stainless steel 650-950 N/mm² M5 PH stainless steel 800-1250 N/mm² K1 Grey cast iron 150-250 HB K2 Nodular cast iron 150-350 HB K3 Austenitic cast iron 120-260 HB K4 ADI cast iron 250-500 HB N1 Aluminium alloys ≤ 12% Si N2 Aluminium alloys > 12% Si N3 Copper N4 Bronze and brass N5 Plastic materials N6 Fiber and composites S1 Heat resistant super alloys (HRSA) - good machinability < 25 HRC S2 Heat resistant super alloys (HRSA) - medium machinability 25-35 HRC S3 Heat resistant super alloys (HRSA) - low machinability 35-45 HRC S4 Low alloy titanium (good machinability) S5 High alloy titanium (medium machinability) H1 Hardened steel 50-56 HRC H2 Hardened bearing steel 54-62 HRC H3 Hardened tool steel 60-65 HRC H4 Hardened martensitic stainless steel 50-56 HRC H5 Hardened white cast iron 48-55 HRC REFER TO PAGES 15-39 FOR THE COMPLETE LIST OF WORKPIECE MATERIALS. CONSULTARE PAGG. 15-39 PER LA LISTA COMPLETA DEI MATERIALI AUF DEN SEITEN 15 BIS 39 FÜR DIE VOLLSTÄNDIGE LISTE VON WERKSTOFFMATERIALIEN CONSULTER DE LA PAGE 15 À LA PAGE 39 POUR LA LISTE COMPLÈTE DES MATÉRIAUX CONSULTAR DESDE PÁG. 15 A PÁG. 39 PARA LA LISTA COMPLETA DE LOS MATERIALES ПОЛНЫЙ СПИСОК ОБРАБАТЫВАЕМЫХ МАТЕРИАЛОВ СМОТРИ НА СТР. 15-39.