What is the ASTM D4587 test chamber

Are you worried that your outdoor paint will soon be eclipsed or even crack under the sunlight? 

Or for the sake of beauty, or to reduce the damage to products exposed to light, rain, moisture and other environments, the paint and coating came into being. Solar radiation is unavoidable for every product exposed to the outdoors, yet coating is an efficient way to avoid further damage.

The main culprit of paint damage or coating damage: ultraviolet light

The composition of solar energy is approximately 5% ultraviolet light; 42% visible light and 53% near infra-red radiation. The impact of solar radiation on the product is mainly caused by infra-red radiation (Thermal effect) and ultraviolet light (Photochemical effect). In this paper, we discuss the photochemical effects caused by the ultraviolet spectrum (wavelength 0.28~0.4μm) of solar radiation energy.

What is the ASTM D4587 standard?

ASTM D4587-11: Standard Practice for Fluorescent UV-Condensation Exposures of Paint

The ASTM D4587 standard is a test method used to determine the resistance of paint and similar coatings to water and humidity. It is a widely recognized standard in the paint and coating industry for evaluating a coating's ability to withstand environmental conditions such as moisture and humidity. This standard is meant to ensure that the coating meets the required levels of performance, durability, and quality. Adhering to the ASTM D4587 standard helps manufacturers create coatings that can function effectively in harsh environments, such as marine or industrial settings.

The ASTM D4587 standard outlines the procedure and provides guidance for testing coating systems on steel structures for their resistance to various environmental elements such as water, corrosion, and UV radiation. The main content of the standard includes the preparation of test specimens, the application of coatings, the exposure of specimens to a range of environmental conditions, and the evaluation of test results. The standard also specifies the requirements for equipment, calibration, and data recording. ASTM D4587 provides a reliable and repeatable method for testing the durability and performance of coating systems, which is essential for ensuring the longevity and protection of steel structures in various harsh environments. This standard is widely used in the coating industry and has become a critical reference for regulating coatings of steel structures in many countries around the world.

LIB ASTM D4587 test chamber