Potentiodynamic measurements, Slow Strain Rate Tests (SSRT) and Constant Load Tests (CLT)
were executed on austenitic stainless steels to investigate chloride induced stress corrosion cracking
(CISCC). Tests were conducted in boiling 43 wt% calcium chloride (CaCl2) and 45 wt% magnesium
chloride (MgCl2) solutions. For the tests one CrNiMo and five CrMnN were chosen. To get mechanical
reference values glycerin was used at SSR test as inert medium. Additionally influences of chloride
concentration and temperature were investigated in potentiodynamic measurements and slow strain rate
tests on the highly alloyed CrNiMo steel. All tests were conducted under atmosphere conditions. The
variation of nickel content among the CrMnN steels showed no influence in time to failure. The
comparison between manganese and nickel austenitic steels in time to failure showed, that Ni-stabilized
austenitic steels do have a 10 to 100 times higher time to failure than Mn-stabilized steels if CISCC is
induced.