A breakthrough in stainless steel technology at the University of Hong Kong has led to the development of SS-H2, a game-changing material for green hydrogen production. This innovative material, designed for water electrolysis systems, offers a solution to the cost and corrosion challenges faced by existing materials. By providing corrosion resistance similar to titanium at a fraction of the cost, SS-H2 reduces material expenses significantly, making industrial hydrogen production more economically viable. The 'sequential dual-passivation' technique used in creating SS-H2 has surprised researchers and offers promising economic impacts. Prof. Mingxin Huang and his team are working on industrializing SS-H2, with initial production collaborations already underway. The potential cost savings with SS-H2 could make green hydrogen a more accessible and sustainable energy solution for the global market, driving a shift towards a more environmentally friendly energy landscape.