NF EN ISO 11114-4

NF EN ISO 11114-4

April 2006
Standard Cancelled

Transportable gas cylinders - Compatibility of cylinder and valve materials with gas contents - Part 4 : test methods for selecting metallic materials resistant to hydrogen embrittlement

ISO 11114-4:2005 specifies test methods and the evaluation of results from these tests in order to qualify steels suitable for use in the manufacture of gas cylinders (up to 3 000 l) for hydrogen and other embrittling gases. ISO 11114-4:2005 only applies to seamless steel gas cylinders. The requirements of ISO 11114-4:2005 are not applicable if at least one of the following conditions for the intended gas service is fulfilled: the working pressure of the filled embrittling gas is less than 20 % of the test pressure of the cylinder;the partial pressure of the filled embrittling gas of a gas mixture is less than 5 MPa (50 bar) in the case of hydrogen and other embrittling gases, with the exception of hydrogen sulphide and methyl mercaptan in which cases the partial pressure shall not exceed 0,25 MPa (2,5 bar).

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Main informations

Collections

National standards and national normative documents

Publication date

April 2006

Number of pages

28 p.

Reference

NF EN ISO 11114-4

ICS Codes

23.020.35   Gas cylinders
27.075   Hydrogen technologies

Classification index

E29-648-4

Print number

1 - 10/03/2006

International kinship

ISO 11114-4:2005

European kinship

EN ISO 11114-4:2005
Sumary
Transportable gas cylinders - Compatibility of cylinder and valve materials with gas contents - Part 4 : test methods for selecting metallic materials resistant to hydrogen embrittlement

ISO 11114-4:2005 specifies test methods and the evaluation of results from these tests in order to qualify steels suitable for use in the manufacture of gas cylinders (up to 3 000 l) for hydrogen and other embrittling gases.

ISO 11114-4:2005 only applies to seamless steel gas cylinders.

The requirements of ISO 11114-4:2005 are not applicable if at least one of the following conditions for the intended gas service is fulfilled:

  • the working pressure of the filled embrittling gas is less than 20 % of the test pressure of the cylinder;
  • the partial pressure of the filled embrittling gas of a gas mixture is less than 5 MPa (50 bar) in the case of hydrogen and other embrittling gases, with the exception of hydrogen sulphide and methyl mercaptan in which cases the partial pressure shall not exceed 0,25 MPa (2,5 bar).
Standard replaced by (1)
NF EN ISO 11114-4
June 2017
Standard Current
Transportable gas cylinders - Compatibility of cylinder and valve materials with gas contents - Part 4 : Test methods for selecting steels resistant to hydrogen embrittlement

<p>ISO 11114-4: 2017 specifies test methods and the evaluation of results from these tests in order to qualify steels suitable for use in the manufacture of gas cylinders (up to 3 000 l) for hydrogen and hydrogen bearing embrittling gases.</p> <p>This document only applies to seamless steel gas cylinders.</p> <p>The requirements of this document are not applicable if at least one of the following conditions for the intended gas service is fulfilled:</p> <p>- the working pressure of the filled embrittling gas is less than 20 % of the test pressure of the cylinder;</p> <p>- the partial pressure of the filled embrittling gas of a gas mixture is less than 5 MPa (50 bar) in the case of hydrogen and other embrittling gases, with the exception of hydrogen sulphide and methyl mercaptan; in such cases, the partial pressure shall not exceed 0,25 MPa (2,5 bar).</p> <p>NOTE In such cases, it is possible to design the cylinder as for ordinary (non-embrittling) gases.</p>

Table of contents
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  • Avant-propos
    iv
  • 1 Domaine d'application
    1
  • 2 Références normatives
    1
  • 3 Termes, définitions et symboles
    2
  • 3.1 Termes et définitions
    2
  • 3.2 Symboles
    3
  • 4 Exigences générales
    4
  • 5 Méthodes d'essai
    4
  • 5.1 Essai au disque (méthode A)
    4
  • 5.2 Essai de mécanique de la rupture (méthode B)
    9
  • 5.3 Méthode d'essai pour déterminer la résistance des bouteilles à gaz en acier à la fissuration assistée par l'hydrogène (méthode C)
    13
  • 5.4 Essais de traction
    16
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