S355JR Steel

S355JR Steel

S355JR steel is an EN 10025-2 structural grade with a minimum yield strength of 355 ksi. It has a wide range of applications in different industries. It is available in sheet/plate, round bar, flat bar and blocks.

To obtain different failure mechanisms, tests were conducted on SENB specimens of S355 ferritic steel in the temperature range between -50 degC and +20 degC. Experimental research was supplemented by modeling and load simulations, as well as metallographic and fractographic examination of the fracture surfaces.


When it comes to strength, S355JR steel is one of the strongest steel grades available. This low-alloy high-strength steel is used in a variety of load-bearing structures, including buildings and bridges. It can also be used to make components for heavy machinery and vehicles. It has excellent weldability and is easy to form and shape. Its corrosion resistance is moderate, but it can be improved by coating or surface treatment.

The chemical composition of S355JR steel is similar to that of carbon steel, although it contains higher quantities of manganese, silicon, sulfur, and phosphorus. These additions help increase the tensile strength of the steel and improve its mechanical properties. These improvements can help improve the performance of the steel in extreme environments.

S355JR is a non-alloy steel with a minimum yield strength of 355 MPa. It is a hot-rolled, low-carbon structural steel with good forming and welding properties. The steel has a high strength-to-weight ratio and can be welded using various methods, including SMAW, GMAW, and FCAW. It can also be forged and machined.

Although these two steel grades share some characteristics, they have unique properties that set them apart from each other. Both S355JR steel are considered structural steels and comply with the EN 10025-2 standard, which requires strict quality control. However, their differences are significant and depend on the specific requirements of the project.

Corrosion resistance

Steel is one of the most widely used materials in the world, and has prompted many technological innovations. Its high tensile strength and ductility make it a popular choice for a variety of applications. These include dump trunks, railway wagons, penstocks and pumps, highway bridges and more. Moreover, it is highly resistant to corrosion and can be easily welded and formed into different shapes and sizes.

The S355JR steel grade has good welding properties, and is easy to work with. It is also easy to form and can be cold worked, which makes it a very versatile material. The low carbon content allows it to weld well without producing carbide precipitation during the welding process. It is also capable of resisting corrosion in various oxidative conditions, including crevice corrosion and pitting corrosion.

The S355JR steel grade is a non-alloy structural steel that has good weldability and resistance to corrosion in corrosive environments. It is also resistant to fatigue, which can lead to cracking and deformation in the long term. It is often supplied in the normalized condition, and its machinability is similar to that of mild steel. This makes it ideal for use in offshore structures and other heavy-duty projects. The steel is normally coated with protective coatings to improve its corrosion resistance. These coatings can be galvanised, painted, or powder coated.


S355JR is a non-alloy high strength structural steel grade and is commonly used in construction projects. It offers excellent weldability and machinability. It also has good formability and ductility. It is often used in manufacturing heavy machinery and equipment, such as trucks and power plants. It can be welded using traditional methods, such as manual or semi-automatic welding. It is also often used by blacksmiths to produce forged pieces, such as gates and artistic art.

The S355JR steel grade is a type of EN 10025 hot-rolled unalloyed structural steel. It has a higher yield strength than S235JR and is used in applications where load-bearing capacity is critical. This grade of steel is also known for its resistance to corrosion and its toughness.

Welding involves melting the steel and allowing it to cool quickly. This can cause the weld area to harden and steel section reduce the toughness of the material. Weldability is also affected by the amount of heat that is applied during welding.

Welding can also damage the surface of the steel, which can lead to cracks and thinning in the weld zone. These defects can weaken the structure and increase the risk of failure. For these reasons, it is important to weld steel according to the appropriate procedures and guidelines. In addition, welding should be done in a well-ventilated area and with the use of a quality electrode.


The price of S355JR steel depends on the type of steel you are purchasing. This grade is typically used in constructional applications. It has a high yield strength and can be welded easily. It also has good corrosion resistance and can withstand a lot of stress. Typically, the steel is hot rolled, normalized and quenched. It is available in a variety of thicknesses and sizes.

S355JR steel is a non-alloy structural steel that is available in a range of plate, sheet and bar formats. The material is highly resistant to fatigue and can withstand loads of up to 355 MPa. Its chemical composition includes carbon, manganese, silicon and sulfur. The material is also resistant to corrosion and oxidation. This is why it is ideal for use in demanding environments.

There are a number of different types of S355 steel plates, including S355JR and S355J2+N. These two grades are similar in many respects, but the J2+N variant has a higher impact energy requirement than the standard version. The N in the name stands for normalised, a process which makes the crystalline grain structure more uniform and increases its strength while moving it away from the ductile-brittle transition.

When choosing a S355 steel supplier, it is important to consider the company’s reputation and experience. A reputable supplier will have a history of excellent service and quality products. They will also offer a wide variety of sizes and grades.