USER GUIDE Groove-Turn Cutting Speed Recommendations Tensile Hardness Material Strength HB No. (1) [N/mm2] ISO Material Condition < 0.25 %C Annealed 420 125 1 >= 0.25 %C Annealed 650 190 2 Non-alloy steel and cast steel, free cutting < 0.55 %C Quenched and tempered 850 250 3 steel GROOVE-TURN >= 0.55 %C Annealed 750 220 4 >= 0.55 %C Quenched and tempered 1000 300 5 Annealed 600 200 6 P Low alloy steel and cast steel 930 275 7 (less than 5% Quenched and tempered 1000 300 8 all elements) 1200 350 9 High alloy steel, cast steel, Annealed 680 200 10 tool steel Quenched and tempered 1100 325 11 Ferritic/martensitic 680 200 12 Stainless steel and cast steel P Martensitic 820 240 13 Stainless steel Austenitic 600 180 14 M Pearlitic/ferritic 180 15 Grey cast iron (GG) Pearlitic/martensitic 260 16 Ferritic 160 17 Ductile cast iron (nodular) (GGG) K Pearlitic 250 18 Ferritic 130 19 Malleable cast iron Pearlitic 230 20 Not cureable 60 21 Aluminum-wrought alloy Cured 100 22 <=12% Si Not cureable 75 23 Aluminum-cast, alloyed Cured 90 24 >12% Si High temperature 130 25 N >1% Pb Free cutting 110 26 Copper alloys Brass 90 27 Electrolitic copper 100 28 Duroplastics, fiber plastics 29 Non-metallic Hard rubber 30 Annealed 200 31 Fe Baswd Cured 280 32 High temp. alloys Annealed 250 33 Ni or Co based Cured 350 34 S Cast 320 35 RM 400 36 Titanium and Ti alloys Alpha+beta alloys cured RM 1050 37 Hardened 55 HRc 38 Hardened steel Hardened 60 HRc 39 H Chilled cast iron Cast 400 40 Cast iron Hardened 55 HRc 41 (1) For material groups, see H8-60 340 340 ISCAR ISCAR