Recommended List of “Known” Materials for Hydrogen Service

The paper will address commonly used materials in Hydrogen service and their limitations as the service conditions (like pressure) get into more challenging areas. For example, Aluminum has good history of use in hydrogen applications upto 3000 psig. It’s compatible with Hydrogen even at pressures higher than 15,000 psig. However, are we comfortable in continued use of Aluminum and similar low melting point materials at higher pressures for containing Hydrogen? The paper is expected to provide basis for a discussion on this safety issue. In addition, the paper will include a discussion around pressure vs stress level limits for common materials. A user friendly material selection chart will be presented for the benefit of the audience.