EUROLAB, with its state-of-the-art accredited laboratories and expert team, provides precise and fast testing services within the scope of EN ISO 21227-4 testing. EN ISO 21227-4 is a standard that provides a procedure for evaluating the performance of coatings on surfaces subject to filamentous corrosion. The standard specifies the use of optical imaging for the evaluation of defects in coated surfaces.
Filiform corrosion is a type of corrosion that typically occurs under a coating in the form of thread-like fibers. The procedure outlined in EN ISO 21227-4 involves exposing a coated surface to a corrosive environment to simulate the filiform corrosion effect on the coating. The surface is then visually inspected using an optical microscope or other suitable imaging equipment to determine the extent of filamentous corrosion.
The standard provides guidelines for determining the severity of defects and assigning a rating based on the extent of the damage. The assessment includes measuring the length and width of the filamentous corrosion as well as the degree of corrosion at the surface.
The standard also provides guidance on the preparation of test panels and the selection of test parameters such as the type and duration of the corrosive media. The results of the test can be used to compare the performance of different coatings or to evaluate the durability of a particular coating under simulated conditions.
In general, EN ISO 21227-4 provides a standardized method for evaluating the performance of coatings on filamentous corrosion-exposed surfaces that can help ensure the quality and durability of coatings used in a variety of applications.
EUROLAB assists manufacturers with EN ISO 21227-4 test compliance. Our test experts, with their professional working mission and principles, provide you, our manufacturers and suppliers, the best service and controlled testing process in our laboratories. Thanks to these services, businesses receive more effective, high-performance and quality testing services and provide safe, fast and uninterrupted service to their customers.
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