ATMOSPHERIC CORROSION BEHAVIOR OF SOME ZINC GALVANIZING STEELS

Present paper presents the experimental results concerning atmospheric behavior of three types of hot zinc galvanizing steels. After using specifying processing parameters, different aspects of layers were obtained (A- with medium grain size, B- very high grain size, and C- small gain size). Atmospheric corrosion behavior was determined by tests in accelerated laboratory conditions, respectively in wet heat and saline smog, which simulate very well the real storage, transportation and exploitation conditions of hot zinc galvanizing steels. Finally a correlation between processing parameters and atmospheric corrosion behavior was determined, C type coats having the highest corrosion resistance, following by A- type, and the B type coats having the lowest atmospheric corrosion resistance.