The salt spray (or salt fog) test is a standardized and popular corrosion test method, used to ASTM B was the first internationally recognized salt spray standard, originally published in Other important relevant standards are. Designation: B – 07a Standard Practice for Operating Salt Spray (Fog) Apparatus1 This standard is issued under the?xed designation B. ASTM B Testing, also known as a Standard Practice for Operating Salt ASTM B Testing requires controls over many operational parameters such as: .

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By using this site, you agree to the Terms of Use and Privacy Policy. This climate is maintained under constant steady state conditions.

Salt spray test – Wikipedia

These acidified test solutions generally have a pH of 3. Salt Xstm Test Chambers. Last previous edition approved in as B — B In order to ensure that the proper salt concentration was achieved when mixing the solution, it is recommended that the solution be checked with either a salimeter hydrometer or speci?

This test can be used to test the relative resistance to corrosion of aluminium alloys when exposed to a changing climate of acetic acid salt spray, followed by air drying, followed by high humidity, all at an elevated temperature. All necessary material for determining corrosiovity test panels, chemicals and other sstm you can buy in our webshop. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.

The size and detailed construction of the apparatus are optional, provided the conditions obtained meet the requirements of this practice. All necessary material for asmt corrosiovity test panels, chemicals and other accessories you can buy in our webshop. Regarding any new applications, it is essential to correlate the results of this practice with b117-077a The salt spray test has little application in predicting how materials or surface coatings will resist corrosion in the real-world, because it does not create, replicate or accelerate real-world corrosive conditions.


The most appropriate test cycle and spray solutions are to be agreed between parties. Different coatings have different behavior in salt spray test and consequently, test duration will differ from one type of coating to another.

The pH measurement shall be made as described in 8. Failure to meet this requirement implies instability in the chemical process of the pre-treatment, or the paint quality, atsm must be addressed immediately, so that the upcoming batches are of the desired quality. This acceleration arises through the use of chemically altered salt spray solutions, often combined with other test climates and in most cases, the relatively rapid cycling of these test climates over time.

Heating Blocks for Evaporators. Note 6 This air should be maintained at a sufficient pressure at the base of the Air Saturator Tower to meet the suggested pressures of Table 2 at the top of the Air Saturator Tower. Although popular in certain industries, modified salt spray testing has in many cases been superseded by Cyclic corrosion testing CCT The type of environmental test chambers used for modified salt spray testing to ASTM G85 are generally similar to the chambers used for testing to ASTM Bbut will often have b11-07a additional features, such as an automatic climate cycling control system.

When the pH of the salt solution is adjusted at room temperature, ast, is therefore necessary to adjust it below 6. In contrast to the full plastic construction, the VLM test rooms consist of a combination of recyclable plastics and metal e.

ASTM B – 07a Standard Practice for Operating Salt Spray (Fog) Apparatus

These standards describe the necessary information b17-07a carry out this test; testing parameters such as temperature, air pressure of the sprayed solution, preparation of the spraying solution, concentration, pHetc.

Suitable apparatus which may be used is described in Appendix X1.

Although the majority of salt spray tests are continuous, i. Most Salt Spray Chambers today are being used NOT to predict the corrosion resistance of a coating, but to maintain coating processes such as pre-treatment and painting, electroplating, galvanizing, and the like, on a comparative basis.


This is followed by 1. If the salt used is of lower purity, then test for halides. Construction of a plastic nozzle, such as is furnished by several suppliers, is shown in Fig.

The principle application of the salt spray test is therefore enabling quick comparisons to be made between actual and expected corrosion resistance. How can I check whether my salt spray test chamber operates properly?

SAL 3000-FL

Daily checking of testing parameters is necessary to show compliance with the standards, so records shall be maintained accordingly. Synthetic seawater solutions are also commonly specified by some companies and standards.

Continuity of Exposure From Wikipedia, the free encyclopedia. Spraying of test solution. Technical features are subject to change without prior notice Power: Options for corrosion chambers. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.

Salt spray test

Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. Unit for filtering compressed air. NOTE 13—If any of the atomized salt solution which has not contacted the test bb117-07a is returned to the reservoir, it is advisable to record the concentration or speci?

Copper content shall be less than 0. It is preferable to saturate the air at temperatures well above the chamber temperature as insurance of a wet fog as listed in Table 2.

Corrosion tests and standards: NOTE 2—Suitable materials for the construction or coating of racks and supports are glass, b17-07a, plastic, or suitably coated wood.

This test is also referred to as an ASS test.