ISO 9223:2012建立了大气环境腐蚀性的分类体系。它 通过标准样品的第一年腐蚀速率定义大气环境的腐蚀性类别， 根据计算出的标准金属第一年腐蚀损失，给出腐蚀性类别规范估计的剂量响应函数，以及 可以根据当地环境状况的知识对腐蚀性类别进行信息性估计。 ISO 9223:2012规定了金属和合金大气腐蚀的关键因素。这些是温湿度复合体、二氧化硫污染和空气盐度。 温度-湿度复合物可以根据润湿时间来评估。根据ISO 9223，在腐蚀性评估中，其他污染物（臭氧、氮氧化物、微粒）的腐蚀作用不被认为是决定性的:2012. ISO 9223:2012没有描述特定使用环境的腐蚀性，例如化学或冶金行业的环境。

ISO 9223:2012 establishes a classification system for the corrosivity of atmospheric environments. It

• defines corrosivity categories for the atmospheric environments by the first-year corrosion rate of standard specimens,
• gives dose-response functions for normative estimation of the corrosivity category based on the calculated first-year corrosion loss of standard metals, and
• makes possible an informative estimation of the corrosivity category based on knowledge of the local environmental situation.

ISO 9223:2012 specifies the key factors in the atmospheric corrosion of metals and alloys. These are the temperature-humidity complex, pollution by sulfur dioxide and airborne salinity. The temperature-humidity complex can be evaluated in terms of time of wetness. Corrosion effects of other pollutants (ozone, nitrogen oxides, particulates) are not considered decisive in the assessment of corrosivity according to ISO 9223:2012. ISO 9223:2012 does not characterize the corrosivity of specific service atmospheres, e.g. atmospheres in chemical or metallurgical industries.