Introduction
Heat-resistant steel, also known as heat-resistant steel, is a kind of special steel with a certain resistance to high temperature and an oxidation resistance at high temperature. As an important part of modern industry, it is mainly used in chemical and industrial furnaces, petrochemical equipment, aerospace industry, automobile and motorcycle industry and other fields. The heat-resistant steel YB/T 036.3-92 has good high temperature oxidation resistance, high temperature fatigue strength, thermal shock stability and corrosion resistance.
Definition
YB/T 036.3-92 heat-resistant steel is a kind of chromium-nickel stainless steel with Cr content between 18-26%, Ni content between 8-20%, and good high temperature oxidation resistance, thermal shock adsorption resistance and thermal fatigue resistance. Because of its special composition and heat treatment process, its structure is ultra-fine grained and its Rm/Rp0.2 (tensile strength to yield strength ratio) is greater than 2.5.
Heat Treatment
Heat treatment of YB/T 036.3-92 heat-resistant steel includes solid solution treatment and aging treatment. The solid solution treatment is a heat treatment process for heating or cooling the steel to a certain temperature, eliminating the internal stress and forming the required grain fine. Aging refers to heating the steel to a certain temperature, and then cooling to room temperature to form a Mg2Si precipitated phase.
Main Performance
YB/T 036.3-92 heat-resistant steel mainly has good high temperature oxidation resistance, high temperature fatigue strength, thermal shock stability and corrosion resistance.
High Temperature Oxidation Resistance. The high temperature oxidation resistance of YB/T 036.3-92 heat-resistant steel mainly depends on the film-forming performance of its chromium-rich oxide film. The chromium-rich oxide film has good thermal stability and resistivity and can form a stable protective film on the surface at high temperature.
High Temperature Fatigue Strength. The high temperature fatigue strength of YB/T 036.3-92 heat-resistant steel is mainly determined by its microstructure and chemical composition. The microstructure and chemical composition of this kind of steel can increase its high temperature fatigue strength, reduce the changes of fatigue strength in different temperatures and increase the service life and durability of steel in different temperature conditions.
Thermal Shock Stability. The thermal shock stability of YB/T 036.3-92 heat-resistant steel depends on its component and microstructure. The component and microstructure of this kind of steel can reduce the thermal shock sensitivity, improve the thermal shock stability and reduce the defects caused by thermal shock damage.
Corrosion Resistance. YB/T 036.3-92 heat-resistant steel has good corrosion resistance. The chromium content in this kind of steel and the uniform and fine microstructure makes YB/T 036.3-92 heat-resistant steel resistant to various chemical medium erosion, making it safe and reliable for a long time in corrosive environment.
Application
YB/T 036.3-92 heat-resistant steel is widely used in metallurgical industry, chemical industry, constructional industry, food industry, clothing industry and other important industries. This kind of steel is usually used to make components that require high temperature such as chemical and industrial furnaces, petrochemical equipment, aerospace industry, automobile and motorcycle industry and other fields.
Conclusion
YB/T 036.3-92 heat-resistant steel is a kind of chromium-nickel stainless steel. It has good high temperature oxidation resistance, high temperature fatigue strength, thermal shock stability and corrosion resistance. In addition, it is widely used in many important industries. Therefore, this kind of steel has become an important part of modern industry.
