Reference number
ISO 11114-4:2017
International Standard
ISO 11114-4:2017
Transportable gas cylinders — Compatibility of cylinder and valve materials with gas contents — Part 4: Test methods for selecting steels resistant to hydrogen embrittlement
Edition 2
2017-04
Read sample
ISO 11114-4:2017
64587
Published (Edition 2, 2017)

ISO 11114-4:2017

ISO 11114-4:2017
64587
Language
Format
CHF 96
Convert Swiss francs (CHF) to your currency

Abstract

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.

This document only applies to seamless steel gas cylinders.

The requirements of this document 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 such cases, the partial pressure shall not exceed 0,25 MPa (2,5 bar).

NOTE In such cases, it is possible to design the cylinder as for ordinary (non-embrittling) gases.

General information

  •  : Published
     : 2017-04
    : Close of review [90.60]
  •  : 2
     : 18
  • ISO/TC 58
    23.020.35 
  • RSS updates

Got a question?

Check out our Help and Support