常见或明显的表面缺陷，有时出现在钢板中，通常在制造之前或之后肉眼可见。这些缺陷的说明和定义包含在本SAE信息报告中。识别名称是整个钢铁行业常用的名称。确定的缺陷包括目前已知存在的主要且最常见的缺陷。这些缺陷的外观和严重程度各不相同。在某些情况下，为了获得合适的照片，选择了极端条件。

Common or obvious surface imperfections, which sometimes occur in sheet steel, are normally visible to the naked eye before or after fabrication.Illustrations and definitions of these imperfections are contained in this SAE Information Report. The identifying names are those commonly used throughout the steel industry. The imperfections identified include the major and most often encourntered imperfections known to exist at this time. These imperfections are variable in appearance and severity. Extreme conditions have been selected in some instances in order to obtain suitable photographs.