
USER GUIDE Tensile Strength Hardness ISO Material Condition [N/mm2] HB < 0.25 %C Annealed 420 125 >= 0.25 %C Annealed 650 190 Non-alloy steel and cast steel, < 0.55 %C Quenched and tempered 850 250 free cutting steel >= 0.55 %C Annealed 750 220 Quenched and tempered 1000 300 Annealed 600 200 P Low alloy steel and cast steel 930 275 (less than 5% of alloying elements) Quenched and tempered 1000 300 1200 350 High alloyed steel, cast steel, Annealed 680 200 and tool steel Quenched and tempered 1100 325 Ferritic/martensitic 680 200 Stainless steel Martensitic 820 240 M Stainless steel Austenitic 600 180 Ferritic/pearlitic 180 Grey cast iron (GG) Pearlitic 260 Ferritic 160 Nodular cast iron (GGG) K Pearlitic 250 Ferritic 130 Malleable cast iron Pearlitic 230 Aluminum- Not cureable 60 wrought alloy Cured 100 <=12% Si Not cureable 75 Aluminum-cast, Cured 90 alloyed >12% Si High temperature 130 N GUNDRILLS >1% Pb Free cutting 110 Copper alloys Brass 90 Electrolitic copper 100 Duroplastics, fiber plastics Non-metallic Hard rubber Fe based Annealed 200 Cured 280 High temp. alloys Annealed 250 Ni or Co based Cured 350 S Cast 320 RM 400 Titanium Ti alloys Alpha+beta alloys cured RM 1050 652 ISCAR