This part of GB/T20975 specifies the electrochromic blue R spectrophotometric method for the determination of beryllium content in aluminum and aluminum alloys. This section applies to the arbitration determination of beryllium content in aluminum and aluminum alloys. Determination range of elachromene R spectrophotometry (Ⅰ): 0.0001% ~ 0.45%; Determination range of elachromene R spectrophotometry (Ⅱ): 2.00% ~ 6.50%.
GB/T 20975.22-2020 Referenced Document
GB/T 8005.2 Terms of aluminium and aluminium alloys—Part 2:Chemical analysis
GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgement of limiting values
GB/T 20975.22-2020 history
2020GB/T 20975.22-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 22:Determination of beryllium content
2008GB/T 20975.22-2008 Methods for chemical analysis of aluminium and aluminium alloys.Part 22: Determination of beryllium content.SCR spetrophotometric method
2001GB/T 6987.22-2001 Aluminium and aluminium alloys--Determination of beryllium content--SCR spectrophotometric method