A breakthrough stainless steel material named SS-H2, developed by the University of Hong Kong, could revolutionize green hydrogen production. Led by Professor Mingxin Huang, the innovative material tackles the high costs and poor durability issues prevalent in current water-splitting systems for hydrogen production. SS-H2 offers a more affordable and longer-lasting solution by utilizing a dual-layer passivation mechanism involving chromium and manganese protective layers. This method enhances corrosion resistance, even in harsh conditions, making SS-H2 a game-changer in the transition towards sustainable energy sources. The economic implications of SS-H2 are substantial, with the material potentially reducing expenses by up to 40 times in industrial hydrogen production processes. This cost-effectiveness positions SS-H2 as a pivotal innovation for the sector. Additionally, SS-H2's strength in salty environments opens up the possibility of producing green hydrogen directly from seawater, expanding the scope of clean energy production. Beyond hydrogen production, SS-H2 holds promise for several industries including ammonia production, oil refining, steelmaking, and methanol production. These applications leverage the cost-effective and durable nature of SS-H2 to enhance sustainability and reduce carbon footprints. Companies like Shell, Linde, and Bloom Energy are already integrating green hydrogen into their operations, highlighting the growing interest and potential of this clean energy source. The development of SS-H2 signifies a significant advancement in material science and aligns with the global movement towards decarbonization. The material's transition from laboratory to industry is progressing, with a focus on large-scale applications to further drive down costs and emissions, contributing to a more sustainable energy future.