ISO 16474-3 discusses paints and varnishes with a focus on weathering tests. ISO 16474-3 specifies methods for exposing coatings to fluorescent UV lamps, heat and water in apparatus designed to reproduce the weathering effects that occur when materials are exposed in actual end-use environments to daylight, or to daylight through window glass.
The coatings are exposed to different types of fluorescent UV lamps under controlled environmental conditions (temperature, humidity and/or water). Different types of fluorescent UV lamps can be used to meet all the requirements for testing different materials.
Note: Specimen preparation and evaluation of the results are covered in other ISO documents for specific materials.
ISO 16474-3 on paint and varnishes test methods useful for:
Paints and varnishes are valued for their longevity. A paint coating’s longevity depends on the weather conditions it endures.
ISO 16474-3 provides you with three test methods that recreate weather conditions the paint will endure in its lifecycle. These paint and varnish test methods are applicable to both internal coatings and external coatings.
Using the test methods elaborated in ISO 16474-3 will help you identify the performance of the paints in field conditions.
BS EN ISO 16474-3:2021 supersedes BS EN ISO 16474-3:2013, which is withdrawn. BS EN ISO 16474-3:2021 includes some technical changes with respect to BS EN ISO 16474-3:2013. These include:
ISO 16474-3
ENISO 16474-3