Description
EN 10210-1 S275J0H Non Alloy Structural Steels Pipe
Introduction
EN 10210-1 is a European standard that specifies the technical delivery conditions for hot finished hollow sections of non-alloy and fine grain structural steels. This article focuses on the S275J0H, S275J2H, S355J0H, S355J2H, and S355K2H grades within this standard. We will explore the material, specification, key features, chemical composition, mechanical properties, steel grade, application, and possible alternative grades.
Material and Specification
EN 10210-1 S275J0H, S275J2H, S355J0H, S355J2H, and S355K2H are all non alloy structural steels. These grades are designed for use in structural applications and are produced in hot finished form. The pipes manufactured under this standard have a circular, rectangular, or square cross-section.
Key Features
The key features of EN 10210-1 S275J0H, S275J2H, S355J0H, S355J2H, and S355K2H non alloy structural steels include:
- High strength: These steels offer excellent strength properties, making them suitable for structural applications.
- Good weldability: They can be easily welded using common welding methods.
- Fine grain structure: The fine grain structure of these steels enhances their toughness and impact resistance.
- Hot finished: The pipes are produced through a hot finishing process, ensuring dimensional accuracy and a smooth surface finish.
Chemical Composition
The following table presents the chemical composition of EN 10210-1 S275J0H, S275J2H, S355J0H, S355J2H, and S355K2H:
| Steel Grade | C% (max) | Si% | Mn% | P% (max) | S% (max) | N% (max) |
|---|---|---|---|---|---|---|
| S275J0H | 0.20 | 0.40 | 1.50 | 0.035 | 0.035 | 0.009 |
| S275J2H | 0.20 | 0.40 | 1.50 | 0.030 | 0.030 | 0.009 |
| S355J0H | 0.22 | 0.55 | 1.60 | 0.035 | 0.035 | 0.009 |
| S355J2H | 0.22 | 0.55 | 1.60 | 0.030 | 0.030 | 0.009 |
| S355K2H | 0.22 | 0.55 | 1.60 | 0.030 | 0.030 | 0.009 |
Mechanical Properties
The mechanical properties of EN 10210-1 S275J0H, S275J2H, S355J0H, S355J2H, and S355K2H are as follows:
| Steel Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Impact Energy (J) |
|---|---|---|---|---|
| S275J0H | 275 | 430-580 | 23 | 27 |
| S275J2H | 275 | 430-580 | 23 | 27 |
| S355J0H | 355 | 510-680 | 22 | 27 |
| S355J2H | 355 | 510-680 | 22 | 27 |
| S355K2H | 355 | 510-680 | 22 | 40 |
Steel Grade and Application
EN 10210-1 S275J0H, S275J2H, S355J0H, S355J2H, and S355K2H are widely used in various structural applications, including:
- Building and construction
- Bridges
- Machinery frames
- Transmission towers
- Offshore structures
- Piling
Possible Alternative Grades
In addition to the mentioned grades, there are several possible alternative grades that can be considered based on specific requirements. Some of these alternative grades include:
- S235JRH
- S275JOH
- S355JOH
- S420MH
- S460MH
It is important to consult the relevant standards and specifications to determine the most suitable alternative grade for a particular application.
Conclusion
EN 10210-1 S275J0H, S275J2H, S355J0H, S355J2H, and S355K2H are non alloy structural steels that offer high strength, good weldability, and fine grain structure. These steels are commonly used in various structural applications due to their excellent properties. It is essential to consider the chemical composition, mechanical properties, steel grade, and application requirements when selecting the appropriate grade. Additionally, alternative grades can be explored based on specific needs and standards.
