It is not possible to determine which coated steel grade, DX51 or DX52, reigns supreme in corrosion resistance without further information. The corrosion resistance of coated steel grades depends on various factors, including the specific coating used and the environment in which the steel will be exposed to.
To determine which coated steel grade is better for corrosion resistance, various aspects need to be considered, such as the specifications, features, benefits, mechanical and chemical compositions, yield and tensile values, usage areas, and production limits of both DX51 and DX52.
Different industries may have different requirements for corrosion resistance, and the choice of coated steel grade would depend on the specific application. Some industries that commonly use coated steel grades include construction, automotive, appliances, and manufacturing.
It is recommended to consult with steel suppliers or experts who can provide more specific information and guidance regarding the corrosion resistance of DX51 and DX52 in different applications.