本国际标准规定了在统计基础上确定存在概率的方法 发生氢脆或退化: a） 一批桶形电镀、自催化电镀、磷化或化学处理的螺纹制品； b） 一批机架镀螺纹物品或杆。 本国际标准适用于具有实际抗拉强度的钢制螺纹制品和杆 强度W 1 000 MPa（相应硬度值:300 HV、303 HB或31 HRC）或表面硬化 螺纹制品或螺纹杆。 不适用于紧固件。 本试验方法在消除氢脆热处理后进行，也可用于 评估处理方案、条件和技术的差异。 该测试方法有两个主要功能:a）当与统计抽样计划一起使用时，可用于批量测试 接受或拒绝；b） 它可以用作控制测试，以确定各种处理的有效性 包括预焙和后焙处理的步骤，以减少物品或棒中的流动氢。 尽管试验方法能够表明脆化程度达到第2条规定的物品， 它不能保证完全不脆化。 本国际标准并不免除制版机、处理器或制造商的强制执行和监控 适当的过程控制。 注1:在酸洗槽中使用抑制剂并不一定能保证避免氢脆。 注2:附录A提供了有关将氢气引入螺纹制品来源的指南。

This International Standard specifies a method of determining, on a statistical basis, the probability of the existence of hydrogen embrittlement or degradation in: a) a batch of barrel electroplated, autocatalytic plated, phosphated or chemically processed threaded articles; b) a batch of rack plated threaded articles or rods. This International Standard is applicable to threaded articles and rod made from steel with an actual tensile strength W 1 000 MPa (corresponding hardness values: 300 HV, 303 HB or 31 HRC) or to surface-hardened threaded articles or rods. It is not applicable to fasteners. The test method is carried out after hydrogen embrittlement relief heat treatment and may also be used for assessing differences in processing solutions, conditions and techniques. The test method has two main functions: a) when used with a statistical sampling plan it can be used for lot acceptance or rejection; b) it can be used as a control test to determine the effectiveness of the various processing steps including pre- and post-baking treatments to reduce the mobile hydrogen in the articles or rod. Although the test method is capable of indicating those articles that are embrittled to the extent defined in clause 2, it does not guarantee complete freedom from embrittlement. This International Standard does not relieve the plater, processor or manufacturer from imposing and monitoring suitable process control. NOTE 1 The use of inhibitors in acid pickling baths does not necessarily guarantee avoidance of hydrogen embrittlement. NOTE 2 Annex A provides guidance on sources of introduction of hydrogen into threaded articles.