Active standard | Published: 27/10/2017

ISO 7529:2017-ed.2.0

Nickel alloys — Determination of chromium content — Potentiometric titration method with ammonium iron(II) sulfate
(Alliages de nickel — Détermination du chrome — Méthode par titrage potentiométrique avec du sulfate de fer(II) et d´ammonium)

Available languages: English

Available design: electronic design (pdf), Print design

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Detail information

Designation: ISO 7529:2017-ed.2.0

Publication date: 27/10/2017

Pages: 5

Country: International technical standard

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Anotation

Description / Abstract: 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.

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