The high thermal conductivity

low coeffcient of thermal expansion and good corrosion resistance of 445J2 ferrit- ic stainless steel make it be a good candidate for some parts in the bromine cooler. The pitting corrosion behaviors of 445J2 ultrapure ferritic stainless steel(/%:0.01C

22.5Cr

1.9Mo

0.27Nb

0.20Ti

0.09Al

0.36Cu

0.015P

0.001S

0.015N)and 316L austenitic stainless steel(/%:0.002C

16.8Cr

10. 19Ni

2.02Mo

0.025P

0.0008S)in 0.1- 1M lithium bromide solutions at 20-60 ℃ are studied by electrochemical test method. The electrochemical results are characterized by scanning electron microscopy(SEM)and energy dispersive analyzer (EDS).The results show that with the increase of LiBr temperature and concentration

the corrosion current density of the two steels increases

the pitting corrosion potential decreases

and the pitting corrosion resistance deteriorates; oxide and sulfide inclusions can cause pitting corrosion of the two steels; High content of Cr and alloying elements such as Mo

Ti

Nb

Al make 445J2 steel have excellent pitting resistance.