According to the Korea Economic Daily, Hylium, KRISO, and POSCO have received AiP from the Korean Register for two types of jointly-developed liquid hydrogen fuel tanks (one comprised of 316L stainless steel, and the other comprised of 316HN stainless steel) for ships.

The Korea Research Institute of Ships and Ocean Engineering (KRISO), POSCO and Korea Shipbuilding and Offshore Engineering (KSOE) developed the storage products together with KRISO.

The 316HN stainless steel, developed by POSCO, is a next-generation steel that further solves the hydrogen embrittlement problem commonly faced in production of liquid hydrogen storage containers.

The companies have also completed the first prototype of the 400 kg capacity liquid hydrogen fuel tank for ships made of 316L stainless steel at the KRISO Offshore Industries R&D Center in Geoje. The consortium plans to demonstrate the new eco-friendly ships, as well as build an R&D shipbuilding infrastructure, in Mokpo City, South Jeolla Province.