The influence of rubidium (Rb), both in its metallic and oxidized states, on the corrosion resistance of steels has direct relevance to the storage of radioactive Kr-85 containing nuclear materials. Kr-85undergoes a β-decay to generate stable, metallic Rb. The literature to date is sparse, and divisive as to whether Rb metal, or the Rb oxides, can lead to corrosion of steel materials. There is also evidence that Rubidium oxide may leech alloying elements such as chromium from stainless steels. In both the direct storage of Kr-85 and used nuclear fuel that will contain Kr-85, if Rb is corrosive then continual decay of the Kr-85 will generate an increasingly corrosive environment for the steel canister it is stored in. Current legacy canisters are corroding through, from the inside, in 30 years. These canisters need to last for 100 years in order for the Kr-85 to fully decay to safe levels. The Kr-85 storage system has other risk factors in the corrosion process, such as hydrogen, hydrogen peroxide, radiation, oxygen, and water. In this presentation we look to explain this dynamic system and how these risk factors affect the corrosion of the Kr-85 storage canisters, and what materials can be used as a substitute for the current storage system.