EN ISO 11114-4:2005

EN ISO 11114-4:2005 is a standard published by the European Committee for Standardization (CEN). Its full title is "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)". This standard covers: 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).

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).

EN ISO 11114-4:2005 is classified under the following ICS (International Classification for Standards) categories: 23.020.30 - Pressure vessels, gas cylinders; 23.020.35 - Gas cylinders. The ICS classification helps identify the subject area and facilitates finding related standards.

EN ISO 11114-4:2005 has the following relationships with other standards: It is inter standard links to EN ISO 11114-4:2017, ISO 4287:1997, ISO 7539-6:2003, ISO 9809-3:2000, ISO 9809-2:2000, ISO 9809-1:1999, ISO 11120:1999, ISO 7539-1:1987, ISO 11114-1:1997, EN 4117:2003, CEN ISO/TS 17226:2003, prEN 15683-2, EN 838:2010, ISO 11114-4:2005. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

EN ISO 11114-4:2005 is associated with the following European legislation: EU Directives/Regulations: 94/55/EC, 96/49/EC, 96/86/EC, 96/87/EC; Standardization Mandates: M/086. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.

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