ISO 11114-4:2017 可运输气瓶 气瓶和阀门材料与气体内含物的兼容性 第4部分：选择抗氢脆金属材料的试验方法

标准编号：ISO 11114-4:2017

中文名称：可运输气瓶 气瓶和阀门材料与气体内含物的兼容性 第4部分：选择抗氢脆金属材料的试验方法

英文名称：Transportable gas cylinders — Compatibility of cylinder and valve materials with gas contents — Part 4: Test methods for selecting steels resistant to hydrogen embrittlement

发布日期：2017-04

标准范围

ISO 11114-4:2017规定了试验方法和对这些试验结果的评估，以鉴定适用于制造氢气和含氢脆化气体气瓶（高达3000升）的钢材。本文件仅适用于无缝钢气瓶。如果预期气体服务至少满足以下条件之一，则本文件的要求不适用:-填充的脆化气体的工作压力小于气瓶试验压力的20%；-在氢气和其他脆化气体的情况下，气体混合物中填充的脆化气体的分压小于5 MPa（50 bar），但硫化氢和甲硫醇除外；在这种情况下，分压不得超过0.25 MPa（2.5 bar）。注:在这种情况下，可以将气缸设计为普通（非普通）气缸-使变脆的）气体。

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.

标准预览图