ISO/TR 8547

FINAL
TECHNICAL ISO/DTR
DRAFT
REPORT 8547
ISO/TC 156
Corrosion of metals and alloys —
Secretariat: SAC
Exposure test results in the Asian
Voting begins on:
2023-10-06 Monsoon region
Voting terminates on:
2023-12-01
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 SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/DTR 8547:2023(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT 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. © ISO 2023

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ISO/DTR 8547:2023(E)
FINAL
TECHNICAL ISO/DTR
DRAFT
REPORT 8547
ISO/TC 156
Corrosion of metals and alloys —
Secretariat: SAC
Exposure test results in the Asian
Voting begins on:
Monsoon region
Voting terminates on:
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.
RECIPIENTS OF THIS DRAFT ARE INVITED TO
ISO copyright office
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
CP 401 • Ch. de Blandonnet 8
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
CH-1214 Vernier, Geneva
DOCUMENTATION.
Phone: +41 22 749 01 11
IN ADDITION TO THEIR EVALUATION AS
Reference number
Email: copyright@iso.org
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
ISO/DTR 8547:2023(E)
Website: www.iso.org
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
Published in Switzerland
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN­
DARDS TO WHICH REFERENCE MAY BE MADE IN
ii
  © ISO 2023 – All rights reserved
NATIONAL REGULATIONS. © ISO 2023

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ISO/DTR 8547:2023(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Exposure tests . 1
[1][2]
5 Climatic and environmental conditions . 3
[1][2]
6 Corrosion behaviours of carbon steel . 6
6.1 Corrosion rate (CR[CS]) . 6
6.2 Effect of environmental factors on corrosion rate . 6
[3]
7 Corrosion behaviours of zinc .12
7.1 Comparison with the previous or published study.12
7.2 Corrosion rate (CR[Zn]) . 14
7.3 Effect of environmental factors on corrosion rate .
...

© ISO #### – All rights reserved
ISO/TC156 N7426
ISO/DTR 8547
2023-7-25
ISO/TC 156
Secretariat: SAC
Date: 2023-09-21
Corrosion of metals and alloys – — Exposure test results in the
Asian Monsoon region

DTRFDIS stage

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© ISO 2018
© ISO 2023 – All rights reserved

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ISO/DTR 8547:(E)
© 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: + 41 22 749 01 11
Fax: +41 22 749 09 47
EmailE-mail: copyright@iso.org
Website: www.iso.orgwww.iso.org
Published in Switzerland
iv © ISO #### 2023 – All rights reserved

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ISO/DTR 8547:(E)
Contents
Foreword .vi i
Introduction . viii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Exposure tests . 2
[1][2]
5 Climatic and environmental conditions . 6
[1][2]
6 Corrosion behaviours of carbon steel . 12
6.1 Corrosion rate (CR[CS]) . 12
6.2 Effect of environmental factors on corrosion rate . 12
[3]
7 Corrosion behaviours of zinc . 19
7.1 Comparison with the previous or published study . 19
7.2 Corrosion rate (CR[Zn]) . 22
7.3 Effect of environmental factors on corrosion rate . 22
[2][3]
8 Corrosion mapping . 30
9 Summary . 32
Annex A (informative) Data sources .
...