In a statement, POSCO said its EN-S355 standard plate, which implemented the world’s first uniform yield point, is the first thick-plate product certified by DNV as a steel for renewable energy.

“As wind towers have become larger, the thickness of the plate is generally increased to support the load of the structure, but POSCO’s uniform yield point plate for wind towers can maintain 355 MPa strength up to 100 mm thick, reducing the use of steel by about 3% when applied to wind towers of 10 MW or more,” the company said. 

“Wind tower turbine designers previously had no choice but to design with the yield point for each thickness specified in the European standard, but this certification laid an institutional foundation for reflecting POSCO’s plate products with uniform yield point in structural design.”

POSCO has more details here.