New Steel Plate for Liquefied-Natural-Gas Storage Tank

For more than 50 years, 9% Ni steel with excellent mechanical properties at a cryogenic temperature of less than –162°C has been used as inner-tank material for liquefied-natural-gas (LNG) storage tanks. However, a reduction of the nickel content in steel can save construction costs of LNG storage tanks. A new steel plate for LNG storage tanks has been developed by optimizing chemical composition and applying recent thermomechanical-control-process (TMCP) technology.

Introduction

With demand for LNG rising, construction of above-ground LNG storage tanks is expected to increase. 9% Ni steel plate has excellent strength and cryogenic toughness.