Application Guide P M K N S H Carbon Steels AlloyList No.Low10101018Med.10351045HighSteelsDie10654140Steels4340Stainless SteelsCastIron30040017-4 PHAluminumNickelAlloyTitaniumHardened Steels60617075CastingInconel6Al4V(30 HRC)~35HRC35-4545-5050-70HRCHRCHRC Double End Mills 522 582 532 542 543 523 562 563 564 566 567 568 570 571 good best WWW.OSGTOOL.COM Illustrated Index/Application Guide 717