LNGTainer has launched a new tank which combines two innovations – LNGTainer’s game-changing tank container and Outokumpu’s unique austenitic stainless steel grade, Supra 316plus.
LNGTainer first considered using aluminum in the inside tank, while Outokumpu offered Supra 316plus because of its properties. Supra 316plus has better low temperature properties compared to other similar materials. In fact, its strength and ductility only improve as the temperature drops down to the lowest measured cryogenic temperature of -196°Celsius. LNG is transported in a temperature of -164°Celsius and then warmed back to gas when delivered.
Supra 316plus has a higher chromium and nitrogen content, and less nickel and molybdenum. Due to the optimized composition, the grade has good corrosion resistance and its performance is superior to conventional steel grades when the temperature drops down to cryogenic temperatures. Additionally, the price of the grade is competitive and stable.