Application Guide P M K N S H Carbon Steels AlloyList No.Low10101018Med.10351045HighSteelsDie10654140Steels4340Stainless SteelsCastIron30040017-4 PHAluminumNickelAlloyTitaniumHardened Steels60617075CastingInconel6Al4V(30 HRC)~35HRC35-4545-50HRCHRC50-70HRC Spiral Fluted Taps 313Ni 345Ni 313 345 317 351 303 343 307 347 398 220 229 230 239 13013 13113 13014 13024 13015 13025 13116 13126 good best WWW.OSGTOOL.COM Illustrated Index/Application Guide 343