BS EN 4594 specifies the requirements for two component polyurethane, topcoat, with a medium degree of resistance to erosion by the effects of rain, available in a range of colours and levels of gloss, to be applied over a primer for aerospace applications on areas where rain erosion at supersonic speeds may be a problem e.g., leading edges and air intakes.
The properties specified in BS EN 4594 are obtained on defined aluminium alloy test pieces prepared in accordance with EN 3837 Procedure A and EN 23270 and painted with primer to EN 2435. The ability of the material to be used for a specific application (e.g., alternative substrate, alternative primer, specific drying conditions, etc.) shall be determined by supplementary tests to confirm that the requirements of BS EN 4594 are met.
BS EN 4594 on supersonic erosion resistance is useful for:
When it comes to the manufacturing and use of any material or component for aerospace application, reliability, consistent performance and durability are crucial.
BS EN 4594 also provides you with physical, chemical, mechanical, and environmental characteristics. If you are a manufacturer of polyurethane coating used in the aerospace industry, compliance with these requirements can ensure your products meet the performance needs of the end-application.
With compliance to BS EN 4594 you can demonstrate the reliability of polyurethane coating and build trust in their use throughout the aerospace supply chain.
EN 4594:2013