The target of a corrosion test of can be the verification of the quality/reliability of a base material and its manufacturing process as well as of welded joint. The weldability of a material as a general concept also implies the ability to maintain the corrosion resistance appropriate to the service required for the component. A corrosion test can be tailored and conducted to verify any standard quality requirements  in the context of a qualification/certification process or may assume the purpose of guidance in  materials selection and/or manufacturing methods optimizations, if there is the possibility to correlate the laboratory test with the real environment parameters.

The Laboratory of the Italian Institute of Welding Group is able to perform, directly its facilities the most common corrosion/ stress corrosion cracking tests:

  • environmental accelerated testing type ASTM B117 (neutral salt spray, acetic and cuproacetic salt spray);
  • pitting and intergranular corrosion test on stainless steels and nickel alloys according to the most common international standards (ASTM G48, ASTM G28, ASTM A262, ASTM A763,) and Customer specific/custom (SAIPEM SPC. CR . UR. 510 rev. 04);
  • crevice corrosion test on stainless steels, nickel alloys, titanium alloys and aluminum alloys;
  • stress corrosion cracking (SCC) test on stainless steel (ASTM G36) and copper alloys (ASTM B858, ASTM G37);
  • corrosion and stress corrosion cracking (SCC) test of aluminum alloys;
  • dezincification corrosion tests of copper alloys.

Scenarios

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Over time corrosion can produce both deep alterations of the structural characteristics of metal components such as to compromise the security and even functionality.

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