This standard specifies a method for the determination of the content of hafnium, titanium, zirconium, tungsten, tantalum and other elements in niobium-hafnium alloys by Inductance Coupled Plasma Atomic Emission Spectroscopy (AES) method (ICP-OES), which is suitable for the quality control of such alloys. The method dissolves the sample with hydrofluoric acid and nitric acid, and calculates the content of the element by measurement of the emission intensity, which is suitable for the composition analysis of niobium-hafnium alloys. This standard provides a scientific basis for material analysis in related