In this paper, the corrosion four p-v weathering steels exposed to marine atmosphere in Qingdao for ye Ars including 5 cycles was studied. It turned out this relationship of the corrosion rate of four weathering steels as FOLLOWS:10CRPV < 10CuPV < 10 MOPV < 08PV, and corrosion resistance of weathering steels is connected with the category and amount. Meanwhile, the results of average corrosion depth showed that value of A was arranged as FOLLOWS:10CRPV < 10CuPV <10MoPV < 08PV, and value of n was arranged as FOLLOWS:10CUPV < 10CrPV < 10MoPV < 08PV.

objective To provide useful references for The design of corrosion protection to crmnsia high-strength steel, expansion a Its Applications then Development of newtypes of of high-strength Steel . Methods Atmospheric corrosion behav ­ iours To ,crmnsia high-strength Steel exposed in industrial and Marine Atmosphere environmentsfor months were investi ­ Gated in Virtue of the corrosion Mass loss, X-ray diffractmeter (XRD ) and Scanning electron microscope (SEM). Results The re­lationship betweenMass loss and exposure Time obeyed down " following Power function: lgaw=2.245+0.387 LG t and lg Aw =2.822+0.637LG t. lepidocrocite Then goethite were found as the major Constituents of, The rust layer formed in two Types of, at ­ mosphere environmentsand, akaganeite was also detected In the Marine Atmosphere Environment. The rust layer exhibited the Tendency on flaking away from " substrate in Marine atmosphere Environment With the increase of exposing. Conclusion Crmnsia high-strength Steel exhibits High corrosion susceptibility Then low corrosion Susceptibility in Marine atmosphere en ­ vironment and industrial Atmosphere Environment, respectively .