What is ISO 11845 - General principles for corrosion testing about?
ISO 11845 specifies general principles for carrying out corrosion tests under conditions of constant immersion.
Some of these general principles are applicable to other types of corrosion testing.
NOTE: ISO 11845 does not cover important procedures for stress corrosion testing.
Who is ISO 11845 - General principles for corrosion testing for?
ISO 11845 on the general principles for corrosion testing is relevant to:
- Corrosion engineers
- Mechanical engineers
- Producers of bimetallic materials
- Testing authorities
Why should you use ISO 11845- General principles for corrosion testing?
The existence of a wide range of corrosion tests, partly as a function of the various materials and corrosive media in existence, calls for guidance in the general procedures that should be used.
ISO 11845 evaluates corrosion tests and gives comparable results, which are carried out in accordance with established conditions. Conditions deviating from these conditions are precisely quoted, considering all the details given in ISO 11845. The most relevant results on corrosion behaviour of metals can normally be obtained from long-term tests under conditions close to those obtained in practice. Corrosion tests are carried out as comparative tests, i.e., several materials or corrosive media are compared under the given test conditions. ISO 11845 advises including reference materials or reference solutions in which the behaviour under practical conditions of attack is known. ISO 11845 provides a clear understanding of the objectives of any corrosion testing programme and helps in making a judicious choice of the most practical methods to evaluate corrosion damage.
Overall, ISO 11845 is helpful as it assists the user with the general requirements for corrosion tests under constant immersion, the material, the corrosive medium, the ratio of solution volume to the surface area, the temperature, the agitation, the test duration and, the evaluation.
What’s changed since the last update?
BS ISO 11845:2020 replaces the first edition (ISO 11845:1995), which has been technically revised. The main changes compared with the previous edition are as follows:
- The format has been changed
- Annex A has been added with general requirements for corrosion tests under constant immersion
