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ISO 18632:2018

(Main)

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

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
9093 - International Standard confirmed
Completion Date
02-May-2024
Ref Project

Relations

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

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ISO 18632:2018 - Alloyed steels -- Determination of manganese -- Potentiometric or visual titration methodISO 18632:2018 - Alloyed steels -- Determination of manganese -- Potentiometric or visual titration method
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ISO 18632:2018 - Alloyed steels -- Determination of manganese -- Potentiometric or visual titration method
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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

---------------------- Page: 1 ----------------------
ISO 18632:2018(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2018
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved

---------------------- Page: 2 ----------------------
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 .
...

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