ISO 6509-2:2017规定了评估标准，并提供了与腐蚀型脱锌相关的指南，用于选择锌质量分数超过15%的铜合金，其暴露于淡水、盐水或饮用水中。评估标准基于ISO 6509-1中的暴露试验。 材料可以是半成品，也可以是最终产品（配件、阀门等）。 ISO 6509-2:2017不适用于流量计或泵零件等复杂产品。此外，在预期应用中可能需要考虑材料的其他特性。 本文件不用于在应用失败的情况下验证脱锌。

ISO 6509-2:2017 specifies assessment criteria and provides guidance related to the corrosion type dezincification for the selection of copper alloys with a mass fraction of zinc of more than 15 %, exposed to fresh, saline waters or drinking water. The assessment criteria are based on the exposure tests in ISO 6509？1. The materials can be in the form of a semi-finished product or in the form of a final product (fittings, valves, etc.). ISO 6509-2:2017 is not applicable to complex products like flow-meters or pump-parts. In addition, other properties of the material might need to be taken into account for the intended application. This document is not intended to validate dezincification in case of failure in the application.