Aktívna norma | Vydaná: 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)

Dostupné jazyky: Anglicky

Dostupné prevedenie: Elektronické PDF, Tlačené

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Podrobné informácie

Označenie: ISO 7529:2017-ed.2.0

Dátum vydania: 27.10.2017

Stránok: 5

Krajina: Medzinárodná technická norma

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Anotácia

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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