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BS ISO 16539:2013 pdf free

BS ISO 16539:2013 pdf free.Corrosion of metals and alloys
The device shall be capable of detecting and controlling the temperature and humidity around specimens.In the transition period of temperature and humidity, the device shall be capable of controlling the dry bulb temperature linear to target value and test period. The device shall be capable of controlling the humidity by keeping the absolute humidity constant to dry bulb temperature at least in every minute.
After the temperature and humidity cycle, the rinse treatment is conducted before re-depositing the test solution. Firstly, the test specimens are washed with drinking water, and then with deionized water.Water drops are then removed carefully with clean air in order not to take off corrosion products from the surface of the test specimens.
The number and type of test specimens shall be selected according to the specification for the material or product being tested. When not so specified, these details shall be mutually agreed between the interested parties.
The test specimens shall be carefully cleaned prior to testing so as to remove those traces (dirt, oil,or other foreign matter), which could influence the result. The cleaning method employed shall depend on the nature of the materials and the contaminants, but shall not include the use of any abrasives or solvents which can attack the surface of the specimens.
For the metals or alloy without organic coatings and inorganic coating materials, the specimens shall be thoroughly cleaned with an appropriate organic solvent using a clean soft brush or an ultrasonic cleaning device. The cleaning shall be carried out in a vessel full of solvent. After cleaning, the specimens shall be rinsed with fresh solvent, then dried.
Unless otherwise specified, specimens intentionally coated with protective organic films should not be cleaned prior to the test. If cleaning is necessary, specimens shall be wiped with gauze impregnated with ethanol, taking care not to damage the surface of the specimens.Care shall be taken that specimens are not contaminated after cleaning by careless handling.
If the test specimens are cut from a larger coated article, cutting shall be carried out in such a way that the coating is not damaged in the area adjacent to the cut. Unless otherwise specified, the cut edges shall be adequately protected by coating them with a suitable material, stable under the conditions of the test, such as paint, wax, or adhesive tape.BS ISO 16539 pdf download.

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