ISO 24476:2024

FINAL DRAFT
International
Standard
ISO/FDIS 24476
ISO/TC 17/SC 1
Steel — Determination of oxygen —
Secretariat: JISC
Infrared absorption method after
Voting begins on:
fusion under inert gas (Routine
2024-01-23
method)
Voting terminates on:
2024-03-19
Aciers — Détermination de l'oxygène — Méthode par absorption
dans l'infrarouge après fusion sous gaz inerte (Méthode de
routine)
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
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INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
Reference number
ISO/FDIS 24476:2024(en) © ISO 2024

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FINAL DRAFT
ISO/FDIS 24476:2024(en)
International
Standard
ISO/FDIS 24476
ISO/TC 17/SC 1
Steel — Determination of oxygen —
Secretariat: JISC
Infrared absorption method after
Voting begins on:
fusion under inert gas (Routine
method)
Voting terminates on:
Aciers — Détermination de l'oxygène — Méthode par absorption
dans l'infrarouge après fusion sous gaz inerte (Méthode de
routine)
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
COPYRIGHT PROTECTED DOCUMENT
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
© ISO 2024
IN ADDITION TO THEIR EVALUATION AS
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
or ISO’s member body in the country of the requester.
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland Reference number
ISO/FDIS 24476:2024(en) © ISO 2024

© ISO 2024 – All rights reserved
ii

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ISO/FDIS 24476:2024(en)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Reagent and materials . 1
6 Apparatus . 2
7 Sampling . 2
8 Procedure . 2
8.1 General .
...

Style Definition
ISO/FDIS 24476:2023(E)
...
Formatted: Font: Bold, French (Switzerland)
ISO /TC 17/SC 1/WG 74
Formatted: Left: 1.9 cm, Right: 1.9 cm, Bottom: 1 cm,
Gutter: 0 cm, Section start: New page, Header distance
Secretariat: JISC
from edge: 1.27 cm, Footer distance from edge: 1.27
cm
Date: 2023-082024-01-09
Formatted
...
Formatted: zzCover large
Formatted
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Formatted: Cover Title_A1
Steel – — Determination of oxygen –— Infrared absorption
method after fusion under inert gas (routineRoutine method)
Formatted
...
Aciers – — Détermination de l'oxygène –— Méthode par absorption dans l'infrarouge après fusion sous
gaz inerte (Méthode de routine)
FDIS stage

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ISO/DISFDIS 24476:20232024(E)
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be requested from either ISO at the address below or ISO’s member body in the country of the requester.
Asian text and numbers
ISO copyright office
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CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: + 41 22 749 01 11
Formatted: French (Switzerland)
EmailE-mail: copyright@iso.org
Formatted: French (Switzerland)
Website: www.iso.orgwww.iso.org
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Published in Switzerland
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ii © ISO 2023 – All rights reserved
© ISO 2024 – All rights reserved

ii

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ISO/DISFDIS 24476:20232024(E)
Formatted: Font: 11 pt, Bold
Formatted: Font: 11 pt, Bold
Formatted: HeaderCentered, Left, Space After: 0 pt,
Contents
Line spacing: single
Formatted: Font: 11 pt, Bold
Foreword . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Reagent and materials . 1
6 Apparatus . 2
7 Sampling . 2
8 Procedure . 2
8.1 General. 2
8.2 Test sample and sample preparation. 3
8.3 Blank test . 4
8.4 Calibration . 4
8.4.1 General . 4
8.4.2 Plotting the calibration curve . 4
8.5 Determination . 4
9 Expression of results .
...