YUSHENG IRON AND STEEL CO.,LIMITED

Under steel specification A 709/A 709M,alloy steel plate A709 Grade 36,A709 Grade 50,A709 Grade 50W,A709 Grade HPS 50W,A709 Grade HPS 70W are mainly used as weathering corrosion resistance steel in heavy industry.High strength low alloy structural steel plate and sheet A709 Grade 36 owned the minimum yield strength at 250 Mpa,and steel plate A709 Grade 50 owned at minimum 345 Mpa,and alloy steel plate and sheet A709 Grade 50W and A709 Grade HPS 50W is at minimum 345 Mpa,and High strength steel plate A709 Grade HPS 70W owned at minimum 485 Mpa.This steel grade owned the highest tensile strength in A709 steel grades.

About the alloy elements for steel plate A709 Grade 36 and A709 Grade 50,when copper steel is specified in order,the copper should above 0.20%,and for steel plates A709 Grade 50W,A709 Grade HPS 50W and A709 Grade HPS 70W,these steel grades limited the contains of Cr,Ni,Mo and other alloy elements when rolling.For the delivery condition,these steel grades A709Gr36,A709Gr50,A709Gr50W,A709GrHPS50W,A709GrHPS70W can be under as-rolled,control-rolled,TMCP with or without accelerated cooling,or quenching and tempering.For steel grade A709 Gr.50W,A709 Gr.HPS 50W,A709 Gr.HPS 70W,they can be used bare or unpainted exposed to the atmosphere.