HB 5220.37-1995
Chemical analysis methods of superalloys Tantalum reagent-benzene extraction-ArsenazoⅢ Absorption photometry Determination of zirconium content (English Version)

Standard No.

HB 5220.37-1995

Language

Chinese, Available in English version

Published By

Professional Standard - Aviation

Status

Be replaced 2008-10

Replace By

HB 5220.37-2008

Latest

HB 5220.37-2008

Replace

HB 5220.19(2)-82

Scope

This standard specifies the method summary, reagents, analysis steps, drawing of working curves, calculation of analysis results and allowable differences for the determination of zirconium content in superalloys using tantalum reagent - benzene extraction - arsenazo III absorbance photometry. This standard is applicable to the determination of zirconium content in high-temperature alloys.

HB 5220.37-1995 history

• 2008 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
• 1970 HB 5220.37-1995 Chemical analysis methods of superalloys Tantalum reagent-benzene extraction-ArsenazoⅢ Absorption photometry Determination of zirconium content