S355J0H is a low-alloy high-strength structural steel that belongs to the European standard (EN 10210) series. Specifically, the "S" in S355J0H represents "structural steel", the "355" represents its yield strength of 355MPa, while the "J0" in "J0H" represents the impact toughness grade of the steel, and the "H" may represent the steel's impact toughness grade. A specific performance or processing state. Its main features include high strength, good weldability, weather resistance and corrosion resistance.
The chemical composition of S355J0H mainly includes the following elements and their content limits:
| C |
Si |
Mn |
P |
S |
| ≤0.22% |
≤0.55% |
≤1.60% |
≤0.025% |
≤0.025% |
The production methods of S355J0H seamless steel pipe usually include hot rolling, cold rolling (drawing) and other methods.
As a low-alloy high-strength structural steel, S355J0H has a series of remarkable characteristics:
1. High strength: The yield strength of S355J0H reaches 355 MPa, which makes it perform well when withstanding heavy loads or high stress environments.
2. Good weldability: This steel has good welding performance and is easy to carry out various welding processes, thereby meeting the manufacturing needs of different structures and equipment.
3. Good toughness and impact properties: S355J0H steel not only has high strength, but also has good toughness and impact properties, which means that it can maintain structural integrity and stability when subjected to impact loads or dynamic loads.
4. Weather resistance and corrosion resistance: With appropriate surface treatment (such as galvanizing, painting, etc.), S355J0H steel can have excellent weather resistance and corrosion resistance, making it easy to use outdoors or in corrosive environments for a long time. damaged.
5. Processing performance: S355J0H steel is easy to process and form, and can be processed through cold bending, hot bending, cutting, drilling and other processes to meet various complex structural and design requirements.
6. Comply with international standards: The production and quality control of S355J0H steel comply with international standards (such as EN 10210, etc.), which ensures the stability and reliability of its quality.
S355J0H has a wide range of applications, mainly including the following aspects: Building structure: S355J0H can be used in load-bearing structures and supporting components of buildings, such as steel columns, steel beams and steel pipe trusses. pidge construction: This material is suitable for the construction of various types of pidges, such as highway pidges, railway pidges and urban road pidges. Machinery manufacturing: S355J0H can be used as structural support parts for heavy machinery and equipment, such as cranes, excavators and loaders. Pipework: The material is also commonly used in pipework in industries such as the oil, gas and chemical industries. In addition, S355J0H can also be used in the manufacturing of factories, general buildings and various types of engineering machinery, such as drilling rigs, electric shovels, electric wheel dump trucks, mining trucks and other mechanical equipment and other structural parts for mining and various engineering constructions.
