ISO 11114-4:2005 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 11114-4:2005

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 metallic materials resistant to hydrogen embrittlement

发布日期：2005-08

标准范围

ISO 11114-4:20 05规定了测试方法和这些测试结果的评估，以使适用于制造用于氢气和其他脆化气体的气瓶（高达3 000 l）的钢合格。ISO 11114-4:20 05仅适用于无缝钢制气瓶。如果满足预期气体服务的以下至少一个条件，则ISO 11114-4:20 05的要求不适用:充入的脆化气体工作压力小于钢瓶试验压力的20%；在氢气和其他脆化气体的情况下，气体混合物的填充脆化气体的分压小于5MPa（50巴），但硫化氢和甲硫醇除外，在这种情况下，分压不应超过0.25 MPa（2.5巴）。

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).

标准预览图