ISO 12732:2006
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ISO 12732:2006
33261

Abstract

 Preview

ISO 12732:2006 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 Cihal'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.

ISO 12732:2006 describes the general methodology and gives examples of suitable test exposure conditions for specific alloys.


General information 

  •  :  Published
     : 2006-09
  •  : 1
     : 14
  •  : ISO/TC 156 Corrosion of metals and alloys
  •  :
    77.060 Corrosion of metals

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