... with the lowest price. There are many steel types stock in our Shanghai warehouse, such as 309S steel plate, 309S steel ... properties: Tensile strength(min):515Mpa, Yield strength(min):205Mpa, Elongation in 2 in. or 50 mm,min, %: 40, Hardness: HB(max): ... for 309S stainless steel: 309S stainless steel is widely used in boilers, energy (nuclear power, thermal power, fuel cell), industrial furnaces, ...