This document specifies the minimum requirements to qualify the materials and processes selected to provide corrosion protection. Additional testing can be performed to satisfy the requirements for materials and processes used in specific flight applications. This standard specifies the behaviour of metals and alloys but it does not remove the responsibility for the degradation of other materials to be considered. This document does not cover the requirements for protection against stress corrosion cracking (SCC) which has its own dedicated standard ECSS-Q-ST-70-36. This standard may be tailored for the specific characteristic and constrains of a space project in conformance with ECSS-S-ST-00.