"DL/T 1845-2018" is a hardness testing standard for high alloy steel materials in the power industry. The standard specifies in detail the principle, test instrument, specimen requirements, test procedures and result processing of the Richter hardness test to ensure the accuracy and reliability of the test. Applicable to a variety of high alloy materials, including 10Cr9Mo1VNbN, GH4145, etc. The standard also provides the conversion method of Richter hardness and brinell hardness. Through the standardized test process, the standard provides a scientific basis for the material quality control of power equipment, which helps to improve the safety and durability of equipment. The standard was released and implemented in 2018 with the aim of promoting technological progress and standardization in the power industry.