1.1 本规程涵盖了将电化学测量结果转换为均匀腐蚀速率的指导。对于大多数工程合金，给出了将腐蚀电流密度值转换为质量损失率或平均穿透率的计算方法。此外，还提供了将极化电阻值转换为腐蚀速率的一些指南。 1.2 以国际单位制表示的值应视为标准值。由于其用途，本标准中包括其他计量单位。 1.3 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《国际标准、指南和建议制定原则决定》中确立的国际公认标准化原则制定的。 =====意义和用途====== 3.1 电化学腐蚀速率测量通常提供电流方面的结果。尽管这些电流值转换为质量损失率或穿透率是基于法拉第定律，但对于具有多种价值元素的合金和金属，计算可能会很复杂。本规程旨在为计算此类合金的质量损失和穿透率提供指导。提供了各种金属和合金的当量的一些典型值。 3.2 电化学腐蚀速率测量可以提供电阻方面的结果。 将这些结果转换为质量损失或渗透速率需要额外的电化学信息。给出了估算这些信息的一些方法。 3.3 使用本规程将有助于从电化学结果中获得更一致的腐蚀速率数据。这将使不同研究的结果更具可比性，并将电化学结果转化为腐蚀速率值时可能出现的计算误差降至最低。

1.1 This practice covers the providing of guidance in converting the results of electrochemical measurements to rates of uniform corrosion. Calculation methods for converting corrosion current density values to either mass loss rates or average penetration rates are given for most engineering alloys. In addition, some guidelines for converting polarization resistance values to corrosion rates are provided. 1.2 The values stated in SI units are to be regarded as standard. Other units of measurement are included in this standard because of their usage. 1.3 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 ====== 3.1 Electrochemical corrosion rate measurements often provide results in terms of electrical current. Although the conversion of these current values into mass loss rates or penetration rates is based on Faraday’s Law, the calculations can be complicated for alloys and metals with elements having multiple valence values. This practice is intended to provide guidance in calculating mass loss and penetration rates for such alloys. Some typical values of equivalent weights for a variety of metals and alloys are provided. 3.2 Electrochemical corrosion rate measurements may provide results in terms of electrical resistance. The conversion of these results to either mass loss or penetration rates requires additional electrochemical information. Some approaches for estimating this information are given. 3.3 Use of this practice will aid in producing more consistent corrosion rate data from electrochemical results. This will make results from different studies more comparable and minimize calculation errors that may occur in transforming electrochemical results to corrosion rate values.