1.1 本指南涵盖了在高压（HP）或高温高压（HTHP）组合条件下对金属材料进行实验室腐蚀试验的程序、样本和设备。看见 3.2 高压和温度的定义。 1.2 本指南中的程序和方法适用于进行质量损失腐蚀、局部腐蚀和电化学试验，以及用于需要在高压或高温高压条件下进行的环境诱导开裂试验。 1.3 本指南的主要目的是提高腐蚀试验结果的一致性。此外，本指南将有助于比较使用不同设备的实验室或测试机构之间的腐蚀数据。 1.4 以国际单位制表示的数值应视为标准值。国际单位制后括号中给出的值仅供参考，不被视为标准值。 1.5 本标准并非旨在解决与其使用相关的所有安全问题（如有）。 本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.6 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 5.1 高压釜试验通常用于评估金属和非金属材料在模拟高压和高温高压工况下的腐蚀性能。使用高压和高温高压腐蚀测试的服务环境示例包括化学加工、石油生产和精炼、食品加工、加压冷却水、电力系统和航空航天推进。 5.2 用于下列腐蚀测试的应用 5.1 工作环境涉及在高压或高温或两者兼有的条件下处理腐蚀性和潜在危险介质。除其他参数外，温度和压力通常会影响水相的组成和性质，从而影响腐蚀过程的严重性。因此，如果不对高温和高压对腐蚀严重性的潜在影响作出可能无效的假设，则无法在传统低压玻璃器皿中进行腐蚀严重性的实验室评估。 5.3 因此，迫切需要提供标准化方法，以便在高压和高温高压下进行腐蚀测试。然而，在许多情况下，由于高压试验室的建造所产生的访问、体积和可见性的限制，无法遵循常规低压玻璃器皿实验中用于暴露样本的标准。本指南参考了现有的腐蚀标准和实践（如适用），然后进一步介绍了需要执行高压和高温高压腐蚀测试的具体指南的领域。

1.1 This guide covers procedures, specimens, and equipment for conducting laboratory corrosion tests on metallic materials under conditions of high pressure (HP) or the combination of high temperature and high pressure (HTHP). See 3.2 for definitions of high pressure and temperature. 1.2 The procedures and methods in this guide are applicable for conducting mass loss corrosion, localized corrosion, and electrochemical tests as well as for use in environmentally induced cracking tests that need to be conducted under HP or HTHP conditions. 1.3 The primary purpose for this guide is to promote consistency of corrosion test results. Furthermore, this guide will aid in the comparison of corrosion data between laboratories or testing organizations that utilize different equipment. 1.4 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 Autoclave tests are commonly used to evaluate the corrosion performance of metallic and non-metallic materials under simulated HP and HTHP service conditions. Examples of service environments in which HP and HTHP corrosion tests have been used include chemical processing, petroleum production and refining, food processing, pressurized cooling water, electric power systems, and aerospace propulsion. 5.2 For the applications of corrosion testing listed in 5.1 , the service environment involves handling corrosive and potentially hazardous media under conditions of high pressure or high temperature, or both. The temperature and pressure, among other parameters, usually drive the composition and properties of the aqueous phase and, hence, the severity of the corrosion process. Consequently, the laboratory evaluation of corrosion severity cannot be performed in conventional low pressure glassware without making potentially invalid assumptions as to the potential effects of high temperature and pressure on corrosion severity. 5.3 Therefore, there is a substantial need to provide standardized methods by which corrosion testing can be performed under HP and HTHP. In many cases, however, the standards used for exposure of specimens in conventional low-pressure glassware experiments cannot be followed due to the limitations of access, volume, and visibility arising from the construction of high-pressure test cells. This guide refers to existing corrosion standards and practices, as applicable, and then goes further in areas in which specific guidelines for performing HP and HTHP corrosion testing are needed.