ISO 19735:2023

FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 19735
ISO/TC 156
Corrosion of metals and alloys —
Secretariat: SAC
Corrosivity of atmospheres —
Voting begins on:
2023-08-07 Mapping areas of increased risk of
corrosion
Voting terminates on:
2023-10-02
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/FDIS 19735:2023(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/FDIS 19735:2023(E)
FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 19735
ISO/TC 156
Corrosion of metals and alloys —
Secretariat: SAC
Corrosivity of atmospheres —
Voting begins on:
Mapping areas of increased risk of
corrosion
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/FDIS 19735:2023(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/FDIS 19735:2023(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Mapping of corrosion attack . 2
4.1 Dose­response functions . 2
4.2 Environmental data used as input to dose­response functions . 2
4.3 Transformation of the environmental data to a common grid system . 2
4.4 Calculation and presentation of corrosion attack . 2
5 Mapping of lifetime. 3
6 Mapping of corrosion cost .3
7 Mapping errors .4
Annex A (inform
...

ISO/TC156 N7235
ISO/DIS FDIS 19735:2023(E)
ISO /TC 156/WG 4
Secretariat: SAC
Date: 2023-0107-21
Corrosion of metals and alloys – — Corrosivity of atmospheres –—
Mapping areas of increased risk of corrosion
FDIS stage

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ISO/DISFDIS 19735:20222023(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
EmailE-mail: copyright@iso.org
Website: www.iso.orgwww.iso.org
Published in Switzerland
ii © ISO 2022 – All rights reserved
ii © ISO 2023 – All rights reserved

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ISO/DISFDIS 19735:20222023(E)
Contents
Foreword . v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Mapping of corrosion attack . 1
4.1 Dose-response functions . 1
4.2 Environmental data used as input to dose-response functions . 2
4.3 Transformation of the environmental data to a common grid system . 2
4.4 Calculation and presentation of corrosion attack . 2
5 Mapping of lifetime . 3
6 Mapping of corrosion cost . 3
7 Mapping errors . 4
Annex A (informative) ISO 9223 functions . 5
Annex B (informative) ICP materials functions . 6
Annex C (informative) Example of environmental data sources . 8
Annex D (informative) Procedure for calculation of lifetimes . 9
Bibliography . 10

Foreword iv
Introduction v
1 Scope 1
2 Normative references 1
3 Terms and definitions 1
4 Mapping of corrosion attack 1
4.1 Dose-response functions 1
4.2 Environmental data used as input to dose-response functions 2
4.3 Transformation of the environmental data to a common grid system 2
4.4 Calculation and presentation of corrosion attack 2
5 Mapping of lifetime 3
6 Mapping of corrosion cost 3
7 Mapping errors 4
Annex A (informative) ISO 9223 functions 5
Annex B (informative) ICP Materials functions 6
Annex C (informative) Example of environmental data sources 8
Annex D (informative) Procedure for calculation of life times 9
© ISO 2022 – All rights reserved iii
© ISO 2023 – All rights reserved iii

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