{"id":6334,"date":"2021-02-15T07:55:48","date_gmt":"2021-02-15T06:55:48","guid":{"rendered":"http:\/\/www.zoccaratospa.it\/?p=6334"},"modified":"2021-10-14T09:48:42","modified_gmt":"2021-10-14T07:48:42","slug":"che-cose-e-come-funziona-il-test-di-nebbia-salina","status":"publish","type":"post","link":"https:\/\/zoccaratoverniciature.it\/en\/che-cose-e-come-funziona-il-test-di-nebbia-salina\/","title":{"rendered":"What is it and how does the salt spray test work?"},"content":{"rendered":"
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Pre-testing can help to drastically reduce the unpredictability component of paint durability and resistance. The salt spray corrosion test is one of the most unique tests – find out what it is, how it works and what it is used for.<\/em><\/p> <\/div>\n<\/div>\n\n \n

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Any metal item that has to operate in the open air is susceptible to external influences and oxidation<\/strong>. Whether it’s earth-moving machinery, cars, automatic gates or garden furniture, everything needs to be properly protected to prevent these agents from affecting its life cycle<\/strong>.<\/p>\n

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The first thought that comes to mind will probably be rain, but in reality, any weathering agent is a potential risk: the sun, air, snow, ice, salt and time itself, meaning the years that an item has been outside, to name but a few, can compromise metal surfaces<\/strong>.<\/p> <\/div>\n<\/div>\n\n \n

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For this reason, pre-testing<\/strong> can help to drastically reduce the unpredictability element related to the durability and resistance of an item’s coating to certain weather conditions and risk agents.<\/span><\/p>\n

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In this regard, one of the most performed and reliable tests is called salt spray corrosion test<\/strong>\u00a0(or NSS, Neutral Salt Spray), or more simply salt spray testing or accelerated ageing testing, and is a process used in the quality control of coated materials and is regulated by precise European and international ISO standards.<\/p>\n

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The reference standards for the correct performance of the test are ISO 9227:2017<\/strong> and ASTM B117<\/strong>.<\/p> <\/div>\n<\/div>\n\n \n

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Salt spray testing is suitable for ensuring that the quality of a metal<\/strong>, with or without corrosion protection, is maintained<\/strong>. One of the major concerns of manufacturers and quality control of materials is time, and this specific type of test is very useful to simulate the real life cycle of a product in order to prove its deterioration in external environments.<\/p>\n

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From an operational point of view, the salt spray test is carried out by placing the material to be tested in a special chamber, where a saline solution (5% NaCl) is vaporized at a temperature of 35\u00b0C.<\/strong><\/p>\n

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In this way, the material undergoes the same changes (if any) that it would undergo if exposed to air for a very long time, making it possible to quickly check its reactions.<\/p>\n

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The time spent in the chamber varies according to the test required and, once completed, will give those who request it an overall picture of the corrosion performance<\/strong> of their product.<\/p>\n

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