This standard specifies the technical requirements and test methods for rinsed and unrinsed chromate conversion coatings on aluminum and aluminum alloys. The standard is formulated with reference to ISO 10546:1993 and is applicable to the treatment and quality control of chemical conversion coatings on aluminum and aluminum alloys. This standard provides a scientific basis for the production and application of conversion coatings, ensuring the corrosion resistance and painting performance of materials, and is widely used in the fields of machinery manufacturing and material protection.