HB 5220.34-2008
Methods for chemical analysis of superalloys. Part 34: Determination of niobium content by sulphochlorophenol C photometric method (English Version)

Standard No.

HB 5220.34-2008

Language

Chinese, Available in English version

Release Date

2008

Published By

Professional Standard - Aviation

Latest

HB 5220.34-2008

Replace

HB 5220.34-1995

Scope

This part specifies the principles, reagents, instruments, sample preparation, analysis steps, calculation of analysis results, tolerances, quality control and requirements for the determination of niobium content in superalloys using chlorosulfonol C absorbance photometry. This section applies to the determination of niobium content in high-temperature alloys. Measuring range: 0.10% ~ 3.00%.

HB 5220.34-2008 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 5220.34-2008 history

• 2008 HB 5220.34-2008 Methods for chemical analysis of superalloys. Part 34: Determination of niobium content by sulphochlorophenol C photometric method
• 1970 HB 5220.34-1995 Chlorosulfonol C absorptiophotometric method for chemical analysis of superalloys Determination of niobium content