S275J2 steel plate
product key technologies
S275J2 steel plate Detailed introduction
S275J2 is a structural steel grade in the European standard (EN 10025), and its grade composition has a specific meaning:
S: indicates Structural steel.
275: indicates that the minimum yield strength of the steel is 275 MPa. Yield strength is the stress value at which a material begins to produce plastic deformation when subjected to external forces.
J2: indicates that the steel has impact toughness at -20℃. The "J" here stands for Impact toughness, while the "2" refers to the test temperature of -20 ° C.
The chemical composition of the S275J2 steel plate will vary according to the specific production standard and manufacturer, but usually comply with European standards (such as EN 10025). The following is the range of chemical composition of a typical S275J2 steel plate:
Carbon (C) : The maximum content is usually around 0.21%, and some standards may specify 0.17% or lower. Carbon is one of the most important alloying elements in steel, which mainly affects the strength and hardness of steel.
Silicon (Si) : Although the specific content of silicon may not be explicitly given in the list of conventional chemical components of S275J2, it is usually present in steel in the form of deoxidizer, and the content is usually low, generally no more than 0.5%.
Manganese (Mn) : The maximum content is usually around 1.50%, and some standards may specify 1.40% or lower. Manganese is another important alloying element in steel, which can improve the strength and toughness of steel.
Phosphorus (P) : The maximum content is usually no more than 0.035%, and some high standards may require less, such as 0.025%. Phosphorus is one of the harmful elements in steel, it will reduce the plasticity and toughness of steel.
Mechanical properties of S275J2 steel plate
Strength property
Yield strength: The yield strength of S275J2 steel plate is one of its basic mechanical properties, and its value reaches or exceeds 275 MPa. The yield strength is the stress value when the material begins to produce plastic deformation under the action of external force, and is an important index to measure the bearing capacity of the material.
Tensile strength: The tensile strength of S275J2 steel plate ranges from 410-560 MPa, depending on the heat treatment state of the steel and the production process. Tensile strength refers to the maximum tensile force that a steel can withstand before breaking, and is a key parameter to evaluate the toughness and strength of a material.
Weldability: The S275J2 steel plate has good weldability, which is easy to weld during the manufacturing process. However, it should be noted that the heat affected zone may occur during the welding process, resulting in changes in local performance, so corresponding measures need to be taken in practical applications to ensure welding quality.
Processing performance: S275J2 steel plate shows good processing performance when bending, stretching and compression are processed at conventional temperatures, and can meet the needs of various engineering and construction projects.
