Yonhap reported that South Korean steelmaker PPOSCO and shipbuilder Daewoo Shipbuilding & Marine are forming a new partnership to develop materials to meet the requirements for shipping materials such as liquefied carbon dioxide or cryogenic liquefied hydrogen. The two companies plan to accelerate the development of new materials that can be applied to future ships and the development of welding technology suitable to the materials and the requirements of shipping future materials.One of their joint projects includes the development of special steel that could withstand extremely high and low temperatures in order to carry liquefied carbon dioxide. The two firms will also work together to develop a fuel tank for ammonia-fueled ships and conduct research on welding technologies, the shipbuilder added.The companies report that the high manganese steel tanks have a lower price than conventional materials, and high strength and wear resistance as well as a good performance at cryogenic temperatures. The first installation was completed in June 2022 with deck-mounted IMO Type-C LNG fuel tanks on a very large crude oil carrier. A second VLCC has also been fitted with the new tank design and recently the first square Type-B LNG tank made of high manganese steel was installed on a new ultra-large containership under construction for Hapag-Lloyd.During their previous collaborations over 20 years, they have developed1. High manganese steel fuel tank for cryogenic LNG transported at minus 163 degree Celsius2. Ultra-thick TMCP steel with a thickness of 80 to 100mm that can withstand the loading weight of an ultra-large containership and LPG & ammonia at minus 55 degree CelsiusThere are also new materials and advanced welding technology for the development of the shipbuilding industry, such as low-temperature steel for cargo holds that can be transported and ARC-7 Yamal icebreaking LNG YP500 steel for polar region operations.