"GB/T 25671-2010 hard coated high-speed steel tools, technical conditions" standard specifies the technical requirements of hard coated high-speed steel tools, including the technical specifications of the tool before coating and the tool after coating, as well as the requirements for marking and Encasement. The standard applies to high-speed steel tools with various hard coatings. High-hardness films (hardness higher than 1800 HV) are coated by physical vapor deposition (VD) (PVD) method to improve the abrasion resistance of the tool. The standard describes in detail the classification of coatings and expressions of common elements, guiding the selection of suitable coatings to meet different cutting needs.