The ASTM_B117 salt spray (atomization) device operation standard describes the meaning and use of the salt spray test and the requirements for the test equipment. Let us look at it together:
(1) Significance and use of salt spray test
1. This standard provides a controlled corrosive environment for determining relevant corrosion resistance data for samples of metal and coated metals exposed in a specific test chamber;
2. When the salt spray results are used as independent data, performance predictions in the natural environment are rarely related to this;
3. The correlation and extension of the corrosion performance of the exposure provided by this standard in the test environment is not always predictable;
4. Relevance and extension should only exist in the case of further confirmed long-term atmospheric exposure;
5. The reproducibility of the results in the salt spray exposure test is entirely dependent on the type of sample and the selection of the evaluation criteria and control variables. In any test project, sufficient repetition must be included to determine the variability of the results. When similar samples are tested in different spray chambers, variability can be observed even if the test conditions are nominally similar and within the limits specified in this specification.
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