GB/T 33362-2016 is a standard for the conversion of metal hardness of materials values. It collects and organizes the conversion relationship of Hardness values obtained by various common metal hardness testing methods, such as the corresponding conversion between Brinell, Rockwell, Vickers and other Hardness values. The standard gives a detailed conversion table and calculation method, which builds a communication bridge between different hardness testing results for metal material research, production and Quality control personnel. When the target Hardness value cannot be directly obtained, it can be easily converted according to this standard, which helps to comprehensively and accurately evaluate the performance of metal materials.