What is ST37-2 material equivalent?

St37 steel material is a German steel grade and belongs to carbon structural steel materials. However, St37 steel material is a total grade, and there are several small grades, such as: St37-2 St37-3U St37-3n RSt-2 USt37-2 and so on.

ST37-2 steel is a German carbon structural steel material. ST37-2 steel is equivalent to China carbon structural steel Q235B (old grade: A3-B), mainly used in construction and underground engineering.

Since St37-2 steel is similar to China high-quality carbon structural steel 20 steel, it can also be replaced by 20 steel.

Carbon structural steel is a kind of carbon steel, with a carbon content of about 0.05% to 0.70%, and individual can be as high as 0.90%. It can be divided into ordinary carbon structural steel and high-quality carbon structural steel.

Carbon structural steel has many uses and is used in a large amount. It is mainly used in railways, bridges, various construction projects, manufacturing various metal components bearing static loads, and unimportant mechanical parts and general welding parts that do not require heat treatment. And carbon steel can be divided into low carbon steel, medium carbon steel and high carbon steel according to chemical composition (ie, carbon content).

Q235B consists of Q+number+quality grade symbol+deoxygenation method symbol. Its steel number is prefixed with "Q", which represents the yield point of the steel, and the following number represents the yield point value in MPa. For example, Q235 represents a carbon structural steel with a yield point (σs) of 235 MPa. If necessary, symbols indicating quality grade and deoxidation method can be marked after the steel number.