5.5 Salt spray tests 5.5.1 Corrosion test 5.5.1.1 Purpose This test checks the resistance of materials and surface coatings of a system/component to salt mist and salt water on streets in winter. This test generates corrosion similar to reality. Failure mode is corrosion. Visual examination as detailed below shall allow identification, appearance, workmanship and finish of the item to be checked against the relevant specification. 5.5.1.2 Test method Perform the test in accordance with IEC 60068-2-52, Test Kb. Select a severity from Table 4 and Annex A. Use operating mode 1.2, as defined in ISO 16750-1. Carry out a visual examination with the naked eye, at normal strength of vision, with normal colour perception, at the most favourable distance and with suitable illumination.