Abstract

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This document specifies a spectrophotometric method for the determination of the phosphorus content in nickel, ferronickels and nickel alloys between 0,000 5 % (by mass) and 0,05 % (by mass).

Arsenic, chromium, hafnium, niobium, silicon, tantalum, titanium and tungsten interfere, but the interferences can be avoided by complexation or volatilization (for chromium). The lowest phosphorus content [0,000 5 % (by mass)] can only be reached in samples with low contents of these interfering elements.


General information 

  • Status
     : Published
    Publication date
     : 2021-12
  • Edition
     : 2
    Number of pages
     : 9
  • Technical Committee
     : ISO/TC 155 Nickel and nickel alloys
  • ICS
     :
    77.100 Ferroalloys
    77.120.40 Nickel, chromium and their alloys

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