S235JR steel plate is a European standard non-alloy structural steel, which is equivalent to the national standard Q235B, which is a carbon structural steel with a lower carbon content. S235JR steel plate is used for welding, bolting, and riveting structures. Mainly used in construction, bridges, ships, vehicle structural parts, manufacturing various tools, cutting tools, molds and measuring tools, etc.
Chemical composition of S235JR steel plate
C≤0.17
Si≤0.35
Mn≤0.65
P≤0.030
S≤0.030
Mechanical properties of S235JR steel plate
Yield strength≥225
Tensile strength 360～510
Elongation≥18
S235JR steel plate is equivalent to the national standard Q235B
Surface classification of S235JR steel plate
Normal surface (FA)
Pickling surface The surface is allowed to have minor and local defects such as pitting, concave surface, scratches, etc. whose depth (or height) does not exceed half of the thickness tolerance of the steel plate, but the minimum allowable thickness of the steel plate and steel strip should be guaranteed.
Higher grade surface (FB)
Pickled surface The surface is allowed to have local defects that do not affect the formability, such as slight scratches, slight indentations, slight pitting, slight roll marks and color differences.
