DIN EN ISO 12732:2008 Corrosion of metals and alloys - Electrochemical potentiokinetic reactivation measurement using the double loop method (based on Cihal's method) (ISO 12732:2006); German version EN ISO 12732:2008
This International Standard specifies the method for measuring the degree of sensitization (DOS) in stainless
steel and nickel-based alloys using the Double Loop Electrochemical Potentiokinetic Reactivation (DL-EPR)
test (based on (~ihal's method).
The method may be used for the quantitative assessment of deleterious thermal effects resulting in the
formation of alloy-element-depleted zones at grain boundaries or in the matrix. However, attention should be
paid when testing heat-affected weld zones, due to possible non-uniform distribution of sensitized zones along
the fusion lines.
The results of the test can be used as an index to identify the potential susceptibility of stainless steel and
nickel-based alloys to intergranular corrosion, pitting corrosion, and intergranular-stress corrosion cracking,
but prediction of these corrosion modes depends on complementary specific testing.
This International Standard describes the general methodology and, in Annex C, gives examples of suitable
test exposure conditions for specific alloys.
DIN EN ISO 12732:2008 Referenced Document
ISO 643:2003 Steels - Micrographic determination of the apparent grain size
ISO 8044:1999 Corrosion of metals and alloys - Basic terms and definitions
DIN EN ISO 12732:2008 history
2008DIN EN ISO 12732:2008-07 Corrosion of metals and alloys - Electrochemical potentiokinetic reactivation measurement using the double loop method (based on Cihal's method) (ISO 12732:2006); German version EN ISO 12732:2008
2008DIN EN ISO 12732:2008 Corrosion of metals and alloys - Electrochemical potentiokinetic reactivation measurement using the double loop method (based on Cihal's method) (ISO 12732:2006); German version EN ISO 12732:2008