Dr. Chris San Marchi is a Distinguished Member of the Technical Staff at Sandia National Laboratories in Livermore CA. Chris and his colleagues are studying the interactions between hydrogen and materials, unraveling the complex nature of hydrogen’s effects on the performance of structural materials, in particular a collection of phenomena commonly referred to as gaseous hydrogen embrittlement. His research is motivated by the emerging deployment of hydrogen technologies to decarbonize the energy sector, such as hydrogen-powered industrial trucks, fuel cell electric vehicles and hydrogen blending into natural gas. Chris has co-authored over 100 conference and journal publications and several book chapters, providing the scientific and engineering basis for hydrogen-related codes and standards both domestically and internationally, including contributions to the Society of Automotive Engineers (SAE), American Society of Mechanical Engineers (ASME) as well as the UN’s Global Technical Regulation No. 13 for Hydrogen and Fuel Cell Vehicles. Additionally, Chris is the Sandia PI on the Hydrogen Materials Compatibility Consortium (H-Mat), an Energy Materials Network, sponsored by the US Department of Energy’s Office of Energy Efficiency and Renewable Energy. Chris is also the Sandia PI on the Pipeline Blending CRADA (DOE HyBlend project), a multi-laboratory partnership with industry exploring the implications of blending hydrogen into natural gas infrastructure.