S355J2 n is a structural steel grade that is part of the EN 10025-2 standard. This standard covers technical delivery conditions for hot-rolled structural steel products. Structural steel is generally used as a building material. You often see it in end products such as buildings, roads, or bridges. A heat treatment of S355j2 n steel is often chosen to improve its mechanical properties.
Facts about s355j2 n steel
S355j2 n is a popular construction steel product, primarily because of its strength, toughness, and weldability. Therefore, it is also very suitable for large-scale construction projects and infrastructure works. But what exactly is this material?
S355j2 n is high-quality, low carbon steel with good toughness and excellent weldability. The ‘S’ in S355j2 n stands for ‘structural steel’, while ‘355’ refers to the minimum yield strength in MPa (Megapascals) for the product thickness during rolling. The ‘+N’ indicates that the steel has been normalized. Therefore, it has already undergone a heat treatment. This refers to the normalizing heat treatment.
The n for normalizing
So, the material s355j2 n steel is already normalized. But why is this done? It’s because of the following reasons:
- Enhancement of Mechanical Properties: Apart from refining the grain structure, normalizing aids in homogenizing and enhancing mechanical properties such as tensile strength, yield strength, and toughness.
- Improved Weldability: By normalizing S355j2 n, the steel becomes more homogeneous, resulting in enhanced weldability. This is crucial for construction applications where welding is often necessary.
- Removal of Internal Stresses: Normalizing can assist in reducing internal stresses introduced during forging, rolling, or other shaping processes. Reducing these stresses can minimize the risk of distortion or cracking in the final product.
Normalizing S355j2 n steel, therefore, is a strategic choice to achieve the desired material properties. This is essential for the applications it’s intended for, especially in the construction and building sector.
Delta Heat Services: the specialist in heat treatments
Do you want to guarantee that the heat treatment process of s355j2 n steel is going well? Or perhaps you’ve had some bad experiences in the past? Don’t hesitate and reach out to Delta Heat Services. Our heat treatment experts can provide you with all the necessary advice. In addition to that, you can also purchase or rent the required equipment from us. Please fill in our contact form and get personal advice about the heat treatments of s355j2 n steel or another piece that needs it.