ISO 3651-2:1998

Current Revision
Determination of resistance to intergranular corrosion of stainless steels - Part 2: Ferritic,austenitic and ferritic-austenitic (duplex) stainless steels - Corrosion test in media containing sulfuric acid

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Determination of resistance to intergranular corrosion of stainless steels - Part 2: Ferritic,austenitic and ferritic-austenitic (duplex) stainless steels - Corrosion test in media containing sulfuric acid

PUBLISH DATE 1998

This part of ISO 3651 specifies methods for the determination of the resistance to intergranular corrosion of ferritic, austenitic and ferritic-austenitic (duplex) stainless steels in media containing sulfuric acid. It also specifies the purposes which may be assigned to the test.

The test methods included are:

  • method A: the 16 % sulfuric acid/copper sulfate test (Monypenny Strauss test);
  • method B: the 35 % sulfuric acid/copper sulfate test;
  • method C: the 40 % sulfuric acid/ferric sulfate test.

The methods are applicable to stainless steels supplied in the form of cast, rolled or forged products and tubes and intended for use in a mildly oxidizing acid medium (for example, sulfuric acid, phosphoric acid).

Unless specified in the product standard, the method to be used, A, B or C, shall form the subject of an agreement between the interested parties.

Annex A gives examples of application of the three methods on stainless steels.

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