... of work-materials from non-ferrous metals to difficult-to-cut materials up to 55 HRc. It is used for all ... alloy,steel,stainless steel,cast iron,non-ferrous metal etc processing--- Specification: Standard size or customized as your machining applications ... high hardness steelsHelix angle45,2Flutes,3Flutes,4Flutes are applicable to process middle hardness steels,the stainless steel,Tialloy,Nialloy. ...