BS EN 4707. Aerospace series. Acid pickling of aluminum and aluminum alloy without hexavalent chromium|Tear tests, Elastic constants, Elongation, Tensile strength, Density, Hardness testing, Approval testing, Qualification approval, Quality assurance, Quality assurance systems, Synthetic rubber, Natural rubber, Marking, Designations, Aircraft engineering, Temperature, Connectors (electric), Aluminium, Degreasing, Cleaning, Acids, Aluminium alloys, Air transport engineering, Chemical cleaning, Surface treatment, Circuit-breakers, Alloys, Nickel alloys, Non-ferrous alloys, Shape, Diameter, Sleeving (electrical), Durability, Testing, Environmental testing, Testing methods, Electrodes, Melting, Air, Steels, Contrast (optical), Measurement, Aircraft components, Cables (electric), Test methods, Aerospace transport, Corrosion tests, Compression set, Mixing