USER GUIDE TAPS Tap Selection Guide and Cutting Speed Recommendations Hole Type(4) Tap Color Code(1) Tool Material(1) Surface Treatment/Coating(2) Flute Hand and Angle Material No. Lead According to DIN 2197(3) 1 2 3 4 5 Hole Type(4) Tensile Strength Material Condition Hardness HB Chip Coolant [N/mm2] 1 < 0.25 %C Annealed 420 125 Ext. Long T 2 >= 0.25 %C Annealed 650 190 Medium T 3 Non-alloy steel < 0.55 %C Quench and tempered 850 250 Long T 4 and cast steel, >= 0.55 %C Annealed 750 220 Long T 7 free cutting steel 930 275 Long X 8 Quench and tempered 1000 300 Long X 9 1200 350 Long A 10 Non-alloy steel and cast Annealed 680 200 Long X 11 steel, free cutting steel Quench and tempered 1100 325 Long X 12 Ferritic/Martensitis 680 200 Medium A Stainless steel 13 Martensitic 820 240 Long A 14 Stainless steel Austenitic 600 180 Long A 15 Ferritic/pearlitic 180 Ext. Short X Grey cast iron (GG) 16 Pearlitic 260 Ext. Short X 17 Ferritic 160 Short X Cast iron nodular (GGG) 18 Pearlitic 250 Ext. Short X 19 Ferritic 130 Short X Malleable cast iron 20 Pearlitic 230 Short X 21 Not cureable 60 Medium T Aluminum-wrought alloy 22 Cured 100 Medium T 23 <=12% Si Not cureable 75 Short T Aluminum- 24 Cured 90 Short T cast, alloyed 25 >12% Si High temp. 130 Short T 26 >1% Pb Free cutting 110 Med/Short T 27 Copper alloys Brass 90 Long T 28 Electrolitic copper 100 Long T 29 Non-metalic Duroplastics, fiber plastics Short Z 31 Annealed 200 Long A High temp. alloys Fe based 32 Cured 280 Long A 33 Annealed 250 Long A 34 Super alloys Ni or Co based Cured 350 Long A 35 Cast 250 Long A 36 400 Med/Short A Titanium and Ti alloys Alpha+beta alloys cured 37 1050 Med/Short A (1) See page 348 Coolant (2) See page 362 A - Cutting oil (3) See page 363 T - Oil emulsion (4) See page 363 X - Oil or emulsion Z - Dry or emulsion 346 ISCAR