DIN17100 St50-2 steel plate is used for various medium-sized metal structural parts, bridge structure and so on which are requiring good weldability and toughness. St50-2 steel is a medium carbon steel with a good machinability, which can be hardened by nitriding. The machinability of St50-2 steel is about 73% with qualitative cutting performance. The toughness of St50-2 steel has good cold and warm forming properties, it is easy to machining, stamping and welding.
The chemical composition of St50-2 steel is according to din17100 standard, the maximum carbon content is 0.18%, the maximum content of silicon is 0.50%, the maximum manganese content of 0.90%, the maximum Nb content is 0.050%, the maximum content of V is 0.06%, and the maximum content of Ti is 0.04%. This steel structure is also suitable for nitrogen and phosphorus elements, but it requires a low content of S, P and other non-essential elements of the content of 0.005%.
The tensile strength of St50-2 steel is 510~640mpa. The minimum yield strength of St50-2 steel is 345MPa. The elongation of St50-2 steel is 16%. St50-2 steel has good weldability, so it can be connected by all welding methods. Building materials such as St50-2 steel are widely used in all walks of life to make parts and components, such as columns and beams in industrial buildings, roof structure, cover structure and so on.
The production process of St50-2 steel must be strictly controlled according to the relevant technical specifications, and the production process is carried out according to the requirements of different parts of the product to ensure that the quality of the product has better performance. The heat treatment process of St50-2 steel is divided into normalizing or quenching and tempering process according to different needs. The annealing process of St50-2 steel is carried out according to the requirements of different parts.
Creep deformity of St50-2 steel structure is not easy. In order to make St50-2 steel structure more resistant to creep, it is often necessary to adopt special methods and treatments. Generally, adding a certain amount of rare earth elements and rare elements can reduce the creep rate of St50-2 steel structure, protect the seismic performance of St50-2 steel structure and extend the service life of St50-2 steel structure. St50-2 steel can be used in rainy areas, humid areas and high strength buildings, so its adaptability is very good.
The performance of St50-2 steel structure is stable and good, so it is widely used in various fields. St50-2 steel structure also has the advantages of fire protection, seismic performance and so on. The welding method of St50-2 steel structure is relatively simple, and the welding part of St50-2 steel structure is not easy to damage. Therefore, it can be said that St50-2 steel structure is an ideal choice for many engineering applications.
