What is meaning of JIS SS400 plate
SS400 plate is defined in the JIS G3101 standard. For SS400 plate, the first S stands for "Steel", the second S stands for "Structure", and 400 stands for the lower limit tensile strength of 400 MPa. In other words, JIS SS400 plate is a ordinary structural steel with a tensile strength of 400 Mpa.
JIS SS400 plate is not recommended for use on main components with high strength, wear resistance or hardness. However, JIS SS400 plate has excellent weldability and machinability. JIS SS400 plate is often used for welding structural parts, nuts, small parts, parts for auto & motor industry, etc. JIS SS400 plate is mainly used in structures such as bridges, ships, vehicles, etc.