The corrosion behaviour of AISI 316 and AISI 304 stainless steels in Na 2 B 4 O 7 ·5H 2 O solutions with various concentrations (3%, 6% and 9% w/w) commonly used in wood industry was investigated by using electrochemical impedance spectroscopy and polarisation techniques. The results reveal that the dissolution pattern of the studied steel samples is in the order 3% > 6% > 9%. The AISI 316 stainless steel is found to exhibit better corrosion resistance than the 304-type stainless steel alloy.