EN ISO 11114-1:2020/A1:2023

Gas cylinders - Compatibility of cylinder and valve materials with gas contents - Part 1: Metallic materials - Amendment 1 (ISO 11114-1:2020/Amd 1:2023)

Gasflaschen - Verträglichkeit von Werkstoffen für Gasflaschen und Ventile mit den in Berührung kommenden Gasen - Teil 1: Metallische Werkstoffe - Änderung 1 (ISO 11114-1:2020/Amd 1:2023)

No scope available

Bouteilles à gaz - Compatibilité des matériaux des bouteilles et des robinets avec les contenus gazeux - Partie 1: Matériaux métalliques - Amendement 1 (ISO 11114-1:2020/Amd 1:2023)

Plinske jeklenke - Združljivost materialov za ventil in jeklenko s plinom - 1. del: Kovinski materiali - Dopolnilo A1 (ISO 11114-1:2020/Amd 1:2023)

General Information

• Status: Published
• Publication Date: 05-Sep-2023
• ICS: 23.020.35 - Gas cylinders
• Technical Committee: CEN/TC 23 - Transportable gas cylinders
• Drafting Committee: CEN/TC 23/WG 20 - Cylinder design - Fittings
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 06-Sep-2023
• Completion Date: 06-Sep-2023
• Directive: 2008/68/EC - Directve 2008/68/EC of the European Parliament and of the council of 24 September 2008 on the inland transport of the dangerous goods
• Mandate: M/TDG - Standards for referencing in the RID-ADR
• Ref Project: SIST EN ISO 11114-1:2020/A1:2023 - Gas cylinders - Compatibility of cylinder and valve materials with gas contents - Part 1: Metallic materials - Amendment 1 (ISO 11114-1:2020/Amd 1:2023)

Relations

• Amends: EN ISO 11114-1:2020 - Gas cylinders - Compatibility of cylinder and valve materials with gas contents - Part 1: Metallic materials (ISO 11114-1:2020)
• Effective Date: 20-Apr-2022

Overview

EN ISO 11114-1:2020/A1:2023 is Amendment 1 to Part 1 of the ISO 11114 series: Gas cylinders - Compatibility of cylinder and valve materials with gas contents - Part 1: Metallic materials. Published by CEN/ISO in 2023, this amendment updates the gas/material compatibility guidance (Table 1) for several aggressive gases and gas mixtures. It clarifies material selection, service limitations and special precautions for metallic cylinders and valve components when storing or transporting reactive and corrosive gases.

Key topics and technical requirements

• Gas/material compatibility: Updated entries for gas numbers 5, 6, 49, 58, 59, 61, 62 and 63 (e.g., boron trichloride, boron trifluoride, fluorine, hydrogen bromide, hydrogen chloride, hydrogen fluoride, hydrogen iodide, hydrogen sulphide).
• Hydrolysis and hygroscopic behaviour: Several gases hydrolyse on contact with moisture (producing hydrogen halides) or are highly hygroscopic, increasing corrosion risk.
• Corrosion and hydrogen embrittlement risks: The amendment highlights severe corrosion of common metals and the potential for hydrogen embrittlement under wet conditions.
• Recommended materials and limitations:
  • High corrosion‑resistant nickel alloys (examples: Incoloy®, Hastelloy®) are identified as suitable for many of these gases (note: product mentions are informational, not endorsements).
  • Brass: acceptable only as a valve body in some cases, not for general valve components.
  • Stainless steel (SS): restrictions for diaphragms and springs where failure would create unsafe conditions.
• Design/performance limits:
  • QTS (qualified tensile strength) materials are limited to a maximum ultimate tensile strength of 950 MPa for certain gases.
  • Operational guidance: maintain cylinder maximum working pressure at 15 °C below TP/5 (one‑fifth of test pressure) in some cases to reduce stress levels.
• Mixture thresholds: Small trace concentrations may be permissible (e.g., mixtures ≤ 0.1% of certain gases in AA cylinders; brass valves acceptable up to 1 000 ppm NO in some mixtures).

Applications

• Material selection for gas cylinders and valves used in industrial, medical and specialty gas supply.
• Development of procurement specifications, design validation and conformity documentation for transportable gas cylinders.
• Safety assessments, inspection criteria and maintenance rules for systems storing corrosive or reactive gases.
• Training and operational guidance for gas suppliers, cylinder refill stations, and regulators.

Who should use this standard

• Cylinder and valve manufacturers
• Gas producers and distributors
• Pressure equipment designers and safety engineers
• Test laboratories and conformity assessment bodies
• Regulatory authorities and standards committees

Related standards

• ISO 11114 series (other parts cover non‑metallic materials, test methods and related guidance). For implementation and national adoption timelines, consult CEN and national standards bodies.

Keywords: EN ISO 11114-1, ISO 11114-1:2020/Amd 1:2023, gas cylinder material compatibility, metallic materials, hydrogen embrittlement, corrosion, valve materials, CEN amendment.

Standards Content (Sample)

SLOVENSKI STANDARD
01-november-2023
Plinske jeklenke - Združljivost materialov za ventil in jeklenko s plinom - 1. del:
Kovinski materiali - Dopolnilo A1 (ISO 11114-1:2020/Amd 1:2023)
Gas cylinders - Compatibility of cylinder and valve materials with gas contents - Part 1:
Metallic materials - Amendment 1 (ISO 11114-1:2020/Amd 1:2023)
Gasflaschen - Verträglichkeit von Werkstoffen für Gasflaschen und Ventile mit den in
Berührung kommenden Gasen - Teil 1: Metallische Werkstoffe - Änderung 1 (ISO 11114
-1:2020/Amd 1:2023)
Bouteilles à gaz - Compatibilité des matériaux des bouteilles et des robinets avec les
contenus gazeux - Partie 1: Matériaux métalliques - Amendement 1 (ISO 11114-
1:2020/Amd 1:2023)
Ta slovenski standard je istoveten z: EN ISO 11114-1:2020/A1:2023
ICS:
23.020.35 Plinske jeklenke Gas cylinders
23.060.40 Tlačni regulatorji Pressure regulators
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 11114-1:2020/A1
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2023
EUROPÄISCHE NORM
ICS 23.020.35
English Version
Gas cylinders - Compatibility of cylinder and valve
materials with gas contents - Part 1: Metallic materials -
Amendment 1 (ISO 11114-1:2020/Amd 1:2023)
Bouteilles à gaz - Compatibilité des matériaux des Gasflaschen - Verträglichkeit von Werkstoffen für
bouteilles et des robinets avec les contenus gazeux - Gasflaschen und Ventile mit den in Berührung
Partie 1: Matériaux métalliques - Amendement 1 (ISO kommenden Gasen - Teil 1: Metallische Werkstoffe -
11114-1:2020/Amd 1:2023) Änderung 1 (ISO 11114-1:2020/Amd 1:2023)
This amendment A1 modifies the European Standard EN ISO 11114-1:2020; it was approved by CEN on 21 March 2023.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of
this amendment into the relevant national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This amendment exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 11114-1:2020/A1:2023 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 11114-1:2020/A1:2023) has been prepared by Technical Committee ISO/TC 58
"Gas cylinders" in collaboration with Technical Committee CEN/TC 23 “Transportable gas cylinders” the
secretariat of which is held by BSI.
This Amendment to the European Standard EN ISO 11114-1:2020 shall be given the status of a national
standard, either by publication of an identical text or by endorsement, at the latest by March 2024, and
conflicting national standards shall be withdrawn at the latest by March 2024.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document has been prepared under a Standardization Request given to CEN by the European
Commission and the European Free Trade Association.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 11114-1:2020/Amd 1:2023 has been approved by CEN as EN ISO 11114-
1:2020/A1:2023 without any modification.

INTERNATIONAL ISO
STANDARD 11114-1
Third edition
2020-05
AMENDMENT 1
2023-07
Gas cylinders — Compatibility of
cylinder and valve materials with gas
contents —
Part 1:
Metallic materials
AMENDMENT 1
Bouteilles à gaz — Compatibilité des matériaux des bouteilles et des
robinets avec les contenus gazeux —
Partie 1: Matériaux métalliques
AMENDEMENT 1
Reference number
ISO 11114-1:2020/Amd.1:2023(E)
ISO 11114-1:2020/Amd.1:2023(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: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
ISO 11114-1:2020/Amd.1:2023(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
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ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO document should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use
of (a) patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed
patent rights in respect thereof. As of the date of publication of this document, ISO had not received
notice of (a) patent(s) which may be required to implement this document. However, implementers are
cautioned that this may not represent the latest information, which may be obtained from the patent
database available at www.iso.org/patents. ISO shall not be held responsible for identifying any or all
such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 58, Gas cylinders, in collaboration with
the European Committee for Standardization (CEN) Technical Committee CEN/TC 23, Transportable gas
cylinders, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna
Agreement).
A list of all parts in the ISO 11114 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iii
ISO 11114-1:2020/Amd.1:2023(E)
Gas cylinders — Compatibility of cylinder and valve
materials with gas contents —
Part 1:
Metallic materials
AMENDMENT 1
6.3.2, Table 1
Replace the rows corresponding to Gas numbers 5, 6, 49, 58, 59, 61, 62, 63 with the followi
...