What is St37-2 steel, and how does it compare to other steel grades?

TAGS: steel | st372 | carbon |

St37-2 steel is a carbon structural steel commonly used in Germany, and is classified as a low carbon steel. It contains a small amount of carbon, manganese, phosphorus, and sulfur, and has good comprehensive mechanical properties such as strength, toughness, and plasticity. St37-2 steel is widely used in engineering, construction, and other fields due to its excellent weldability and low cost.

In terms of chemical composition, St37-2 steel is similar to other low carbon steel grades such as S235JR, S355JR, and A36. However, compared to these grades, St37-2 steel has a lower carbon content and is therefore less strong but more ductile. It also has a lower tensile strength and yield strength, which makes it less suitable for applications that require high strength.

The mechanical properties of St37-2 steel can be improved to some extent by adding alloying elements such as manganese, chromium, and nickel. These elements can enhance the strength and hardness of the steel, while maintaining its ductility and toughness. However, the addition of alloying elements also increases the cost of the steel and may affect its weldability.

St37-2 steel is often compared to ASTM A36 steel, which is a similar carbon structural steel used in the United States. Both have similar chemical compositions and mechanical properties, but St37-2 steel is typically less expensive and is more common in Europe. In addition, St37-2 steel is often used in applications where dimensional accuracy and surface finish are important, while ASTM A36 steel is used in applications where strength and durability are more important.

St37-2 steel is a reliable and versatile carbon structural steel with good mechanical properties and weldability. Its low cost and widespread availability make it a popular choice for a variety of applications.