GB/T 4 2513.3-2023 Specification for the determination of aluminum content in nickel alloys. The standard gives the one-oxidation dinitrogen-flame atomic absorption spectroscopy (AAS) method and the Inductance Coupled Plasma Atomic Emission Spectroscopy (AES) method. The scope of application is clear, the principles of the two methods are described in detail, the requirements for instruments, reagents, etc. are put forward, and the sample processing, test steps and result calculation are strictly standardized. According to this standard, the aluminum content of nickel alloys can be accurately determined, providing key data for quality control and performance research, supporting the application of nickel alloys in aerospace, machinery manufacturing and other fields, and ensuring product mass.