EN ISO 11114-4:2005 Transportable gas cylinders - Compatibility of cylinder and valve materials with gas contents - Part 4: Test methods for selecting metallic materials resistant to hydrogen embrittlement
This part of ISO 11114 specifies test methods and the evaluation of results from these tests in order to qualify steels suitable for use in the manufacture of gas cylinder(up to 3 000)for hydrogen and other embrittling gases.This part of ISO 11114 only applies to seamless steel gas cylinders.The requirements of this part of ISO 11114 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 5MPa(50 bar)in the case of hydrogen an
EN ISO 11114-4:2005 history
2017EN 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
2005EN ISO 11114-4:2005 Transportable gas cylinders - Compatibility of cylinder and valve materials with gas contents - Part 4: Test methods for selecting metallic materials resistant to hydrogen embrittlement