DIN EN 2379-2018 Aerospace series – Fluids for assessment of non-metallic materials

DIN EN 2379-2018 Aerospace series – Fluids for assessment of non-metallic materials. This European Standard specifies preferred test fluids for evaluating the resistance of non-metallic andrelated materials to the action of fluids. The aim of this document is to rationalise the choice of fluids used for qualification and batch testing ofmaterials. In some cases, the test fluid and conditioning temperatures may closely simulate in-service conditions.However, no direct behaviour with service conditions shall be implied. 2 Normative references The following documents are referred to in the text in such a way that some or all of their contentconstitutes requirements of this document. For dated references, only the edition cited applies. Forundated references, the latest edition of the referenced document (including any amendments) applies. EN 2744, Aerospace series — Non-metallic materials — Preferred test temperature ISO 1817, Rubber, vulcanized or thermoplastic — Determination of the effect of liquidsSTANAG 1135, Interchangeability of Fuels, Lubricants and Associated Products Used by the Armed Forcesof the North Atlantic Treaty Nations 1 3 Terms and definitions No terms and definitions are listed in this document. ISO and IEC maintain terminological databases for use in standardization at the following addresses: • IEC Electropedia: available at http://www.electropedia.org/ • ISO Online browsing platform: available at http://www.iso.org/obp 4 Test fluids 4.1 The preferred test fluids are given in Table 1 and are grouped as follows: Group 1 – Mineral and synthetic oils Group 2 – Hydraulic fluids Group 3 – De-icing fluids Group 4 – Solvents Group 5 – Simulated corrosion inducing fluids Group 6 – Simulated fuels Group 7 – Test fuels 4.2 As commercial fluids, and those specified by performance requirements may not have an entirely constant composition, exposure should, whenever possible, be in well defined chemical products used alone or in mixtures. When it is necessary to use proprietary fluids, it is recommended that a stock offluid is obtained, its composition fully detailed, and use restricted to environmental testing. 5 Test temperatures 5.1Test temperatures shall be selected from EN 2744. 5.2 When selecting the test temperature consideration shall be given to the flash point, maximum safe test temperature and toxicity of the test fluid in combination with the test specimen. It is necessary for all conditioning and testing to be performed in accordance with local and national requirements for health and safety at work and protection of the environment acts. 5.3 Elevated temperature exposure increases the rate of...