Common steel bulb grades mainly include Q235B, Q345B, SS400, A36, and S235JR. The differences between these steel bulb grades lie in their chemical composition, mechanical properties, and the specific country/regional standards they comply with. Different grades of bulb flat steel have different hardness, strength, toughness and corrosion resistance to meet different engineering requirements.
Read moreS355JR is a European standard low-alloy structural steel, which is known for its high strength and excellent impact resistance. This steel grade has a minimum yield strength of 355 MPa, making it suitable for construction, engineering, and manufacturing applications. S355JR is commonly used in the manufacture of heavy machinery, transmission towers, and offshore structures, among others.
Read morethe choice of steel grade depends on the specific application and requirements. For example, if strength is the primary concern, S355JR is the best choice. If durability is more important, Q345B or St52-3 may be more suitable.
Read moreSt37-2 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.
Read moreS235JR steel is a type of carbon steel commonly used in the structural and construction industries. It is characterized by its low carbon content and good mechanical properties, making it a popular choice for structural applications such as bridges, buildings, and machinery. This steel grade is part of the EN 10025 standard, which specifies the technical delivery conditions for hot-rolled non-alloy structural steel.
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