The coastal microclimate along Osaka Bay (Konohana, Minato, Suminoe wards, and Yumeshima) features airborne saline aerosols, marine moisture, and elevated relative humidity. Electro-galvanized (EG) coatings provide thin sacrificial protection (usually 5 to 12 microns), making them vulnerable to rapid zinc depletion and white rust in coastal environments. Stainless steel (AISI 304 or 316L) possesses an intrinsic passive chromium-oxide layer that resists chloride pitting without degrading, eliminating maintenance shutdowns in marine and processing environments.