ISO 11114-1:2020/Amd 1:2023

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

General Information

• Status: Published
• Publication Date: 12-Jul-2023
• ICS: 23.020.35 - Gas cylinders
• Technical Committee: ISO/TC 58 - Gas cylinders
• Drafting Committee: ISO/TC 58 - Gas cylinders
• Current Stage: 6060 - International Standard published
• Start Date: 13-Jul-2023
• Due Date: 14-Feb-2024
• Completion Date: 13-Jul-2023

Relations

• Amends: ISO 11114-1:2020 - Gas cylinders — Compatibility of cylinder and valve materials with gas contents — Part 1: Metallic materials
• Effective Date: 06-Jun-2022

Standards Content (Sample)

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 2023

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ISO 11114-1:2020/Amd.1:2023(E)
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© ISO 2023
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ISO 11114-1:2020/Amd.1:2023(E)
Foreword
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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.
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© ISO 2023 – All rights reserved

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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 following:
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© ISO 2023 – All rights reserved

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ISO 11114-1:2020/Amd.1:2023(E)
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Table 1 — Gas/material compatibility
No. Gas number Name Formula Key compatibility characteristics Material
UN number
Cylinder Valve (body and
components)
A N A N
5 (UN 1741) BORON TRICHLORIDE BCl Hydrolyses to hydrogen chloride in contact with NS AA CS AA
3
moisture. In wet conditions, see specific risk of
QTS SS B
hydrogen chloride compatibility, i.e. severe corro-
SS Ni
sion of most of the materials and risk of hydrogen
embrittlement.
Ni ASB
Mixtures of dry gas not exceeding 0,1 % of this gas
may be filled into AA cylinders.
6 (UN 1008) BORON TRIFLUORIDE BF Hydrolyses to hydrogen fluoride in contact with NS AA CS AA
3
moisture. In wet conditions, see specific risk of
QTS SS B
hydrogen fluoride compatibility, i.e. severe corro-
SS Ni
sion of most of the materials and risk of hydrogen
embrittlement.
Ni ASB
Mixtures containing less than 0,1 % BF may be
3
filled into AA cylinders.
49 (UN 1045) FLUORINE F Hydrolyses to hydrogen fluoride in contact with QTS AA CS AA
2
moisture. In wet conditions, see specific risk of
a
NS SS B
hydrogen fluoride compatibility, i.e. severe corro-
SS Ni
sion of most of the materials and risk of hydrogen
embrittlement.
Ni ASB
Risk of violent reaction with AA.
Recommended materials are also Ni alloy and re-
fined nickel.
Mixtures containing less than 0,1 % of this gas may
be filled into AA cylinders.
NOTE  Incoloy© and Hastelloy© are examples of suitable products available commercially. This information is given for the convenience of users of this document and does not
constitute an endorsement by ISO of these products.
a
Brass is only acceptable as a valve body but not as a general valve component material.
b
For mixtures containing up to 1 000 ppm of dry NO, brass valves can be used.

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ISO 11114-1:2020/Amd.1:2023(E)
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Table 1 (continued)
No. Gas number Name Formula Key compatibility characteristics Material
UN number
Cylinder Valve (body and
components)
A N A N
58 (UN 1048) HYDROGEN BROMIDE HBr This compound is highly hygroscopic and corrosive NS AA CS B
in wet conditions with most of the materials except
QTS SS AA
some high corrosion resistant nickel alloys (e.g.
SS Ni
Hastelloy©). QTS are limited to a maximum ulti-
mate tensile strength of 950 MPa. This limitation
Ni ASB
also applies to mixtures containing the gas stored
at a total pressure at 15 °C greater than half the
normal service pressure of the cylinder.
However, experience shows that a cylinder can be
safely used without any specific strength limitation
requirements, providing the maximum working
pressure at 15 °C in the cylinder is less than one-
fifth of the test pressure (TP/5), in order to main-
tain a low stress level in the cylinder material.
...