Thanks to a near zero thermal expansion between liquid natural gas temperature (-163°C) and a low modulus of elasticity, INVAR® (MI13) is the key alloy for manufacturing LNG carrier tanks and LNG transfer lines made of pipe-in-pipe technology. The material’s low expansion and good weldability are the key advantages. They also help achieve a significant cost savings by reducing such capex as the construction of a jetty or the dredging of a seabed close to the port.