Din 1.4303 hot rolled stainless steel Coil itself belongs to a metastable austenitic stainless steel. When it is in a solid solution condition, the material belongs to austenitic structure, and austenitic stainless steel belongs to the steel that is easy to be cold and deformed. Through the process of cold deformation processing, the hardness and strength of the material can be improved while retaining its toughness and plasticity, so that it has good rust resistance under atmospheric conditions. Many uses of this steel strip require sensitization treatment. Today we will talk about the relevant knowledge of sensitization processing.
The so-called Din 1.4303 hot rolled stainless steel Coil sensitization treatment actually refers to the austenitic stainless steel undergoing solid solution treatment. When the heating temperature is 500~850 degrees, chromium is precipitated from the solid solution to form chromium carbide, thereby Causes the grain boundary corrosion susceptibility of the steel strip, and is used to measure the grain boundary corrosion tendency. In short, sensitization treatment is a method of detection.
Since the sensitization treatment can make the alloy carbides of Din 1.4303 hot rolled stainless steel Coil (FeCr)23C6 precipitate in large quantities along the grain boundaries, the steel strip will produce intergranular corrosion in the intergranular corrosion medium, so the steel strip can be effectively detected. Resistance to intergranular corrosion.
The steel strip is mainly used in the cold-worked state to withstand high loads, but it is hoped to strengthen the overall weight of the equipment. Therefore, when it is hit by an external force, the work-hardening material itself will absorb a certain amount of impact energy, which can reduce the impact on the equipment. impact.
However, due to the strong corrosion resistance of austenitic stainless steel strips in reducing media, the corrosion resistance of Din 1.4303 hot rolled stainless steel Coil in chemical media such as acid, alkali and salt is relatively poor, so we do not recommend this type of steel strip. It is used in corrosive harsh environments.