Abstract Preview

ISO 7529:2017 specifies a potentiometric titration method for the determination of chromium content in nickel alloys which do not contain insoluble carbides and which have a vanadium content less than a mass fraction of 0,2 %. The method is applicable to chromium contents between a mass fraction of 5 % and a mass fraction of 22 %.

Vanadium, which can be present as an impurity in the alloy, will give a positive bias interference. However, at a level of a mass fraction of 0,2 %, this bias is equivalent to a mass fraction of 0,068 % chromium, which is about half the reproducibility of the method.

General information

  • Status :  Published
    Publication date : 2017-10
  • Edition : 2
    Number of pages : 5
  • :
    ISO/TC 155
    Nickel and nickel alloys
  • 77.120.40
    Nickel, chromium and their alloys

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