Hobbing cutter feature: Type:inlayed alloy and all steel Material:2Cr13,4Cr13,YG15,YG18,W18Cr4V,W6MO5Cr4V2 The hobbing cutter has two ... all steel . Alloy cutter selection :major component is made of 2Cr13,4Cr13,the cutting edge is made of YG15,YG18 and ...