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The SCC susceptibility of 18Cr-9Ni-Ti austenitic stainless steel in 0.5 mol.dm(-1) HCl + 0.5 mol.dm(-3) NaCl solution and the inhibiting effect of benzotriazole (BTA) on SCC and general corrosion were investigated by slow strain rate testing (SSRT), transient current measurements during fast strain rate testing (FSRT) under potentiostatic condition, scanning electron microscopy (SEM), potentiodynamic polarization measurements and electrochemical impedance spectroscopy (EIS) measurements. The results indicated that the inhibitive action of BTA can be attributed to its adsorption and inhibiting the anodic dissolution of the metal by the effect of blocking the active sites on the metal surface. (C) 1998 Elsevier Science Ltd. All rights reserved