The Kesternich test according to ISO 3231 (or ASTM G87) is a cyclic condensation test in an acidic environment. In the closed test chamber where the samples are exposed, an atmosphere of 100% relative humidity at a temperature of 40 \u00b0C is maintained during the first 8 hours of a 24-hour period, to which a specific amount of SO2 (sulfur dioxide) is added at the start. After these 8 hours, the chamber is vented, the heating is turned off, and the samples remain at room temperature and ambient relative humidity for the next 16 hours. Following this, the condensation\/temperature\/SO2 atmosphere is re-established, and the test cycle repeats for the next 24 hours. This process continues until the required number of cycles is reached. This can vary from 2 to 50 or more.<\/p>\n
The Kesternich test is found in various standards and specifications, such as Qualicoat for powder-coated aluminum, Qualisteelcoat, specifications for bolts and screws, as well as in various specifications for coil coating systems and coatings for automobiles and traffic objects.<\/p>\n
Variants of the test are also performed in the Kesternich chamber involving the injection of other gases (for example, CO2 or NH3) and the maintenance of different temperatures.<\/p>\n","protected":false},"excerpt":{"rendered":"The Kesternich test according to ISO 3231 (or ASTM G87) is a cyclic condensation test in an acidic environment. In the closed test chamber where the samples are exposed, an atmosphere of 100% relative humidity at a temperature of 40 \u00b0C is maintained during the first 8 hours of a 24-hour period, to which a… View Article<\/a>","protected":false},"author":5,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"class_list":["post-11890","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/nebest-cot.nl\/en\/wp-json\/wp\/v2\/pages\/11890","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nebest-cot.nl\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/nebest-cot.nl\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/nebest-cot.nl\/en\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/nebest-cot.nl\/en\/wp-json\/wp\/v2\/comments?post=11890"}],"version-history":[{"count":5,"href":"https:\/\/nebest-cot.nl\/en\/wp-json\/wp\/v2\/pages\/11890\/revisions"}],"predecessor-version":[{"id":12635,"href":"https:\/\/nebest-cot.nl\/en\/wp-json\/wp\/v2\/pages\/11890\/revisions\/12635"}],"wp:attachment":[{"href":"https:\/\/nebest-cot.nl\/en\/wp-json\/wp\/v2\/media?parent=11890"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}