HB 5220.37-2008 Methods for chemical analysis of superal loys. Part 37: Determination of zirconium content by N-benzoyl-N-phenylhydroxylamine-benzene extraction-arsenazo Ⅲ photometric method (English Version)
This part specifies the principles, reagents and materials, instruments, sample preparation, analysis steps, calculation of analysis results, tolerance and quality control for the determination of zirconium content in high-temperature alloys using tantalum reagent-benzene extraction-arsenazo III absorbance photometry. and requirements. This section applies to the determination of zirconium content in high-temperature alloys. Measuring range: 0.03% ~ 0.20%.
HB 5220.37-2008 Referenced Document
GB/T 7729 Chemical analysis of metallurgical products—General rule for spectrophotometric methods*, 2021-08-20 Update
HB 5421 General rules and general regulations for chemical composition analysis methods of metallic materials
HB/Z 205 Specification for sampling of specimens for chemical analysis of steels and superalloys
HB 5220.37-2008 history
2008HB 5220.37-2008 Methods for chemical analysis of superal loys. Part 37: Determination of zirconium content by N-benzoyl-N-phenylhydroxylamine-benzene extraction-arsenazo Ⅲ photometric method
1970HB 5220.37-1995 Chemical analysis methods of superalloys Tantalum reagent-benzene extraction-ArsenazoⅢ Absorption photometry Determination of zirconium content