ISO/DTR 22824.2

Welding — Best practices for specification and measurement of ferrite in stainless steel weld metal

ISO/TR 22824:2003 provides guidance, based on the experience of experts, for setting appropriate requirements, in specifications and other standards and contract documents, on ferrite content of nominally austenitic or duplex ferritic-austenitic stainless steel weld metals.

Soudage — Bonnes pratiques pour la spécification et le mesurage de la ferrite dans le métal fondu des aciers inoxydables

L'ISO/TR 22824 :2003 fournit les lignes directrices, fondées sur l'expérience d'experts, pour la définition d'exigences adéquates dans les spécifications et autres normes et documents contractuels en matière de teneur en ferrite dans le métal fondu d'aciers nominalement austénitiques et duplex ferritiques-austénitiques.

General Information

• Status: Not Published
• ICS: 25.160.10 - Welding processes
• Technical Committee: IIW - International Institute of Welding
• Drafting Committee: IIW - International Institute of Welding
• Current Stage: 5000 - FDIS registered for formal approval
• Completion Date: 20-Dec-2023

Relations

• Revises: ISO/TR 22824:2003 - Welding consumables — Predicted and measured FN in specifications — A position statement of the experts of IIW Commission IX
• Effective Date: 06-Jun-2022

Standards Content (Sample)

TECHNICAL ISO/TR
REPORT 22824
Second edition
Welding — Best practices for
specification and measurement of
ferrite in stainless steel weld metal
PROOF/ÉPREUVE
Reference number
ISO/TR 22824:2023(E)
© ISO 2023

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ISO/TR 22824:2023(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2023
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: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
PROOF/ÉPREUVE © ISO 2023 – All rights reserved

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ISO/TR 22824:2023(E)
Contents Page
Foreword .v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Metallurgical phenomena of ferrite in stainless steel weld metal .2
4.1 General . 2
4.2 Solidification mode . 3
4.2.1 General . 3
4.2.2 A solidification mode (austenitic) . 3
4.2.3 AF solidification mode (primary austenite) . 3
4.2.4 FA solidification mode (primary ferrite) . 3
4.2.5 F solidification mode (ferritic) . 4
4.2.6 Mixed solidification modes . 4
4.3 Solid state phase transformation of ferrite to austenite. 5
4.3.1 General . 5
4.3.2 A solidification mode alloys . 6
4.3.3 AF solidification mode alloys . 6
4.3.4 FA solidification mode alloys . 6
4.3.5 F solidification mode alloys . 7
4.4 Constitution diagrams .
...

© ISO 2023 – All rights reserved
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Style Definition
ISO/DTR PRF TR 22824:2023(E)
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IIW Commission II
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Secretariat: IIW
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Date: 2023-08-25
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Welding — Best practices for specification and measurement of
ferrite in stainless steel weld metal

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DTR stage
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Draft 2023-06-15

Warning for WDs and CDs
This document is not an ISO International Standard. It is distributed for review and comment. It is subject to
change without notice and may not be referred to as an International Standard.
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.

© ISO 2023 – All rights reserved

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ISO/DTRPRF TR 22824:2023(:(E)
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© ISO 2023
Formatted: Line spacing: single, Tab stops: Not at
16.98 cm
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,
Formatted: Indent: Left: 0 cm, Right: 0 cm, Space
including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can Before: 0 pt, No page break before, Adjust space
be requested from either ISO at the address below or ISO’s member body in the country of the requester. between Latin and Asian text, Adjust space between
Asian text and numbers, Border: Top: (No border)
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: + 41 22 749 01 11
Formatted: English (United Kingdom)
Formatted: English (United Kingdom)
Fax: [phone]
EmailE-mail: [e-mail]
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Website: www.iso.orgwww.iso.org
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and Asian text, Adjust space between Asian text and
Published in Switzerland
numbers
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ii © ISO 2023 – All rights reserved

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ISO/DTRPRF TR 22824:2023(:(E)
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Contents
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Foreword . Error! Bookmark not defined.
Introduction . Error! Bookmark not defined.
1 Scope . Error! Bookmark not defined.
2 Normative references . Error! Bookmark not defined.
3 Terms and definitions . Error! Bookmark not defined.
4 Metallurgical phenomena of ferrite in stainless steel weld metalError! Bookmark not defined.
4.1 General . Error! Bookmark not defined.
4.2 Solidification mode . Error! Bookmark not defined.
4.3 Solid state phase transformation of ferrite to austenite . Error! Bookmark not defined.
4.4 Constitution diagrams . Error! Bookmark not defined.
4.5 Effects of welding conditions on ferrite . Error! Bookmark not defined.
4.6 Alpha prime and intermetallic phase formation . Error! Bookmark not defined.
4.7 Chromium nitrides and secondary austenite . Error! Bookmark not defined.
4.8 Postweld heat treatment . Error! Bookmark not defined.
5 Effects of ferrite variations on service performance of stainless steel weld metal . Error!
Bookmark not defined.
5.1 General . Error! Bookmark not defined.
5.2 Tensile properties at ambient temp
...