What do you mean by "HSS" on the drill bit?
The drill has a HSS on it, indicating that the material is high speed steel."HSS" is the abbreviation for High speed steel high speed steel. Is a kind of high speed steel tool steel with high hardness and high wear resistance and high heat resistance, and high speed tool steel or steel, white steel. High speed steel was developed by American F.W. Taylor and M. White in 1898. High speed steel has good technical performance, good strength and toughness, so it is mainly used to make complex cutting edge and impact resistant metal cutting tools. It can also manufacture high temperature bearings and cold extrusion dies.
High speed steel material is represented. High speed steel is divided into M35#6542#9341#4341#4241# material according to alloy content
