AS/NZS ISO 11114.1:2025
Gas cylinders – Compatibility of cylinder and valve materials with gas contents – Part 1: Metallic materials
Standard provides requirements for the selection of safe combinations of metallic cylinder and valve materials and cylinder gas content. The compatibility data given is related to single gases and to gas mixtures. This document is identical with, and has been reproduced from, ISO 11114‑1:2020 Gas cylinders – Compatibility of cylinder and valve materials with gas contents – Part 1: Metallic materials and its Amendment No. 1 (2023), which has been added at the end of the source text.
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AS/NZS ISO 11114.1:2025 Compatibility of cylinder and valve materials with gas contents Metallic materials
Preface
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Materials
4.1 General
4.2 Cylinder materials
4.3 Valve materials
4.3.1 General
4.3.2 Particular considerations
5 Compatibility criteria
5.1 General
5.2 Corrosion
5.2.1 General
5.2.2 Corrosion in dry conditions
5.2.3 Corrosion in wet conditions
5.2.4 Corrosion by impurities
5.3 Hydrogen embrittlement phenomenon
5.4 Generation of dangerous products
5.5 Violent reactions (e.g. ignition)
5.6 Stress corrosion cracking
6 Material compatibility
6.1 Table of compatibility for single gases
6.2 Compatibility for gas mixtures
6.3 Using Table 1
6.3.1 Conventions and numbers
6.3.2 Abbreviations for materials
Annex A (informative) Gas/materials NQSAB compatibility code
Bibliography
Amendment 1
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AS/NZS ISO 11114.1:2025 Compatibility of cylinder and valve materials with gas contents Metallic materials
Preface
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Materials
4.1 General
4.2 Cylinder materials
4.3 Valve materials
4.3.1 General
4.3.2 Particular considerations
5 Compatibility criteria
5.1 General
5.2 Corrosion
5.2.1 General
5.2.2 Corrosion in dry conditions
5.2.3 Corrosion in wet conditions
5.2.4 Corrosion by impurities
5.3 Hydrogen embrittlement phenomenon
5.4 Generation of dangerous products
5.5 Violent reactions (e.g. ignition)
5.6 Stress corrosion cracking
6 Material compatibility
6.1 Table of compatibility for single gases
6.2 Compatibility for gas mixtures
6.3 Using Table 1
6.3.1 Conventions and numbers
6.3.2 Abbreviations for materials
Annex A (informative) Gas/materials NQSAB compatibility code
Bibliography
Amendment 1
AS/NZS ISO 11114.1:2025
Online Library subscription information
Online library subscriptions provide a cost-effective solution for organisations of any size to access the latest standards, offering 24/7 access to a personalised catalogue. The service ensures subscribers have have the most up-to-date version of selected standards, incluing automatic updates for any amendments or versions. Pricing is dependent on the chosen standards and the number of concurrent users, with discounts applied from the standards PDF price. For customised subscriptions or further inquiries, contact the Online Library team.