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CEN

prEN ISO 4937

(Main)

Steel and iron - Determination of chromium content - Potentiometric or visual titration method (ISO/DIS 4937:2024)

Steel and iron - Determination of chromium content - Potentiometric or visual titration method (ISO/DIS 4937:2024)

The method is applicable to chromium contents between 0.25 % (m/m) and 35 % (m/m). Specifies principle, reagents, apparatus, sampling, procedure, expression of results and test report. Annex A gives additional information on the international co-operative tests, and Annex B represents the precision data graphically.

Stahl und Eisen - Bestimmung des Chromgehalts - Potentiometrische oder visuelle Titrationsmethode (ISO/DIS 4937:2024)

Aciers et fontes - Détermination du chrome - Méthode par titrage potentiométrique ou visuel (ISO/DIS 4937:2024)

La présente Norme internationale spécifie une méthode de dosage par titrage potentiométrique ou visuel du chrome dans les aciers et les fontes. La méthode est applicable aux teneurs en chrome comprises entre 0,25 et 35 % (m/m). En présence de vanadium, le titrage visuel ne s'applique qu'aux prises d'essai contenant moins de 3 mg de vanadium.

Jeklo in železo - Določevanje kroma - Potenciometrična ali vizualna titracijska metoda (ISO/DIS 4937:2024)

General Information

Status
Not Published
Publication Date
29-Sep-2025
Technical Committee
ECISS/TC 102 - Methods of chemical analysis for iron and steel
Drafting Committee
ECISS/TC 102 - Methods of chemical analysis for iron and steel
Current Stage
4060 - Closure of enquiry - Enquiry
Start Date
27-May-2024
Completion Date
27-May-2024
Ref Project
oSIST prEN ISO 4937:2024 - Steel and iron - Determination of chromium content - Potentiometric or visual titration method (ISO/DIS 4937:2024)

Relations

Revises
EN 24937:1990 - Steel and iron - Determination of chromium content - Potentiometric or visual method (ISO 4937:1986)
Effective Date
25-Oct-2023
Revises
EN 24937:1990/AC:1991 - Steel and iron - Determination of chromium content - Potentiometric or visual method (ISO 4937:1986)
Effective Date
25-Oct-2023
Revises
EN ISO 4934:2003 - Steel and iron - Determination of sulfur content - Gravimetric method (ISO 4934:2003)
Effective Date
24-Jan-2023

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SLOVENSKI STANDARD
oSIST prEN ISO 4937:2024
01-maj-2024
Jeklo in železo - Določevanje kroma - Potenciometrična ali vizualna titracijska
metoda (ISO/DIS 4937:2024)
Steel and iron - Determination of chromium content - Potentiometric or visual titration
method (ISO/DIS 4937:2024)
Stahl und Eisen - Bestimmung des Chromgehalts - Potentiometrische oder visuelle
Titrationsmethode (ISO/DIS 4937:2024)
Aciers et fontes - Détermination du chrome - Méthode par titrage potentiométrique ou
visuel (ISO/DIS 4937:2024)
Ta slovenski standard je istoveten z: prEN ISO 4937
ICS:
77.040.30 Kemijska analiza kovin Chemical analysis of metals
77.080.01 Železne kovine na splošno Ferrous metals in general
oSIST prEN ISO 4937:2024 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN ISO 4937:2024

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oSIST prEN ISO 4937:2024
DRAFT
International
Standard
ISO/DIS 4937
ISO/TC 17/SC 1
Steel and iron — Determination
Secretariat: JISC
of chromium content —
Voting begins on:
Potentiometric or visual titration
2024-03-04
method
Voting terminates on:
2024-05-27
Aciers et fontes — Dosage du chrome — Méthode par titrage
potentiométrique ou visuel
ICS: 77.080.01
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS.
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Reference number
ISO/DIS 4937:2024(en)
© ISO 2024

---------------------- Page: 3 ----------------------
oSIST prEN ISO 4937:2024
DRAFT
ISO/DIS 4937:2024(en)
International
Standard
ISO/DIS 4937
ISO/TC 17/SC 1
Steel and iron — Determination
Secretariat: JISC
of chromium content —
Voting begins on:
Potentiometric or visual titration
method
Voting terminates on:
Aciers et fontes — Dosage du chrome — Méthode par titrage
potentiométrique ou visuel
ICS: 77.080.01
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
COPYRIGHT PROTECTED DOCUMENT
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2024
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
BE CONSIDERED IN THE LIGHT OF THEIR
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
or ISO’s member body in the country of the requester.
NATIONAL REGULATIONS.
ISO copyright office
RECIPIENTS OF THIS DRAFT ARE INVITED
CP 401 • Ch. de Blandonnet 8
TO SUBMIT, WITH THEIR COMMENTS,
CH-1214 Vernier, Geneva
NOTIFICATION OF ANY RELEVANT PATENT
Phone: +41 22 749 01 11
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland Reference number
ISO/DIS 4937:2024(en)
© ISO 2024
© ISO 2024 – All rights reserved
ii

---------------------- Page: 4 ----------------------
oSIST prEN ISO 4937:2024
ISO/DIS 4937:2024(en)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions .
...

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