| abstract |
(57) [Summary] [Purpose] Not only does it have excellent resistance to blackening (corrosion resistance) in a humid environment without being subjected to chromate treatment, which leads to pollution problems, but also has excellent processability and alkali resistance. Al- A Zn alloy plated steel sheet is provided. [Structure] Al-Zn alloy plated steel sheet has a resin film on the surface. Al-Zn alloy plated steel sheet has a resin film containing alkynes, alkynols, amines, thio compounds, heterocyclic compounds, polycarboxylic acids. 0.001 to 50% by weight of a total amount of at least one compound selected from acid compounds or salts thereof, benzoic acid or salts thereof, ligninsulfonic acid or salts thereof, phosphoric acid or salts thereof, or chromic acid. Or chromate or both As 0.5 to 40 mg / m 2 . |