ISO 18632:2018

Alloyed steels — Determination of manganese — Potentiometric or visual titration method

This document specifies a potentiometric or visual titration method for the determination of manganese content in alloyed steels. The method is applicable to manganese mass fractions between 2 % and 25 %. Vanadium and cerium interfere with the determination. If the mass fraction of cerium in the sample is less than 0,01 %, or the mass fraction of vanadium in the sample is less than 0,005 %, the interference is negligible, otherwise theoretical corrections are necessary.

Aciers alliés — Détermination du manganèse — Méthodes par titration visuelle ou potentiométrique

General Information

• Status: Published
• Publication Date: 07-Aug-2018
• ICS: 77.140.20 - Stainless steels
• Technical Committee: ISO/TC 17/SC 1 - Methods of determination of chemical composition
• Drafting Committee: ISO/TC 17/SC 1 - Methods of determination of chemical composition
• Current Stage: 9060 - Close of review
• Start Date: 04-Mar-2029

Relations

• Revises: ISO 18632:2010 - Alloyed steel — Determination of manganese — Potentiometric and visual titration method
• Effective Date: 04-Mar-2017

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 18632
Second edition
2018-08
Alloyed steels — Determination of
manganese — Potentiometric or
visual titration method
Aciers alliés — Détermination du manganèse — Méthodes par
titration visuelle ou potentiométrique
Reference number
ISO 18632:2018(E)
©
ISO 2018

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ISO 18632:2018(E)

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ii © ISO 2018 – All rights reserved

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ISO 18632:2018(E)

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Reagents . 1
6 Apparatus . 4
7 Sampling . 4
8 Procedure. 4
8.1 Test portion . 4
8.2 Determination . 5
8.2.1 Preparation of test solution . 5
8.2.2 Titration. 5
8.2.3 Theoretical correction of vanadium and cerium . 5
9 Expression of results . 6
9.1 Method of calculation . 6
9.1.1 Visual titration . 6
9.1.2 Potentiometric titration . 6
9.2 Precision .
...