Results of corrosion resistance comparison with post hot-dip zinc-coated steel sheets

Corrosion resistance comparison with post hot-dip zinc-coated steel sheets (HDZ55: JIS H8641)

With only 1/6 of the coating weight of post hot-dip zinc-coated steel sheets, ZAM® exhibits corrosion resistance equal to or better than theirs. The following examination certifications admit that ZAM® may replaceposthot-dip galvanized steel.

Appearances of flat parts after salt spray test

Post hot-dip products are first cut to shape and then coated.

Corrosion resistance comparison in a sulfur dioxide environment

ZAM shows better corrosion resistance compare to post hot-dip zinc-coated steel sheets (HDZ55) in a sulfur dioxide (sulfurous acid gas) environment.

Appearances after 450 hours of sulfur dioxide test

Corrosion loss of ZAM and post hot-dip galvanized product in sulfur dioxide test

Corrosion resistance comparison in acid rain simulated combined-cycle corrosion test

ZAM® shows better corrosion resistance compare to post hot-dip zinc-coated steel sheets (HDZ55) in an acid rain environment.

Corrosion loss of ZAM and post hot-dip galvanized product in acid rain simulated combined-cycle corrosion test

Corrosion loss of ZAM® and post hot-dip galvanized product in acid rain simulated combined-cycle corrosion test

Source: Nippon Steel