本文件规定了在铝合金上生产和测试通用化学转化涂层的要求。 化学转化涂层用于航空航天产品的制造，以提高油漆附着力和耐腐蚀性。 该工艺也可用于阳极涂层的补漆。

This document specifies the requirements for producing and testing a general purpose chemical conversion coating on aluminium alloys. The chemical conversion coating is used in the manufacture of aerospace products in order to improve paint adhesion and resistance to corrosion. This process can also be used for touch-up of anodic coatings.