This standard specifies the method principle, reagents, instruments, analysis steps, calculation and tolerance of analysis results for the determination of yttrium content in titanium alloys using copper-iron reagents, copper reagent extraction separation-azochlorophosphine III photometric method. This standard is applicable to the determination of yttrium content in titanium alloys. Measuring range: 0.0030% ~ 0.010%.
HB 5297.21-2001 history
1970HB 5297.21-2001 Titanium alloy chemical analysis method copper iron reagent, copper reagent extraction separation - azochloric acid Ⅲ spectrophotometric determination of yttrium content