YUSHENG IRON AND STEEL CO.,LIMITED

Hot rolled atmospheric corrossion resisting steel plate SMA570W and SMA570P which were developed to eliminate the need for painting, and form a stable rust-like appearance if exposed to the weather for several years.The steel specification the hot tolled atmospheric corrosion resisting steels particularly imparted with a high weldability to be used for bridges,buildings,shipping containers and other structures.Carbon equivalent and weld cracking susceptibility of material of SMA570W and SMA570P shall be applied to the steel plates having undergone quenching and tempering delivery condition.

Weathering steel plate SMA570W owned minimum 460 Mpa yield strength for thickness equal and belows 16mm,and tensile strength shall be between 570 Mpa and 720 Mpa.The upper limits of tensile strength shall apply only to the steel plates and those for the steel sections shall be in accordance with agreement between the purchaser and the supplier.Steel plate SMA570P owned the same values on minimum yield piont and tensile strength as steel plate SMA570W.The different between these steel grades of SMA570W and SMA570P is the main chemical elements contains,especially in nickel.