S275J0 - 1.0143

S275J0 is a structural steel grade defined by the European standard EN 10025-2.

The "S" stands for "structural," indicating its primary application in load-bearing contexts such as construction or engineering projects.

The "275" denotes its minimum yield strength of 275 megapascals, making it suitable for components that require moderate strength without extreme performance demands. This characteristic supports applications in infrastructure projects like bridges, buildings, and tanks, where sufficient but not exceptional strength is crucial.

The "J0" designation refers to a specific impact energy absorption requirement: the steel must withstand an energy impact of 27 joules at 0°C. This denotes its ability to resist sudden force or impacts at this temperature, reducing the risk of fracture in environments with dynamic loads or low temperatures.

Chemically, S275J0 has a low carbon content, with a maximum of 0.18%, simplifying welding and forming processes. Elements like manganese (up to 1.5%) enhance its strength and toughness. With a carbon equivalent value (CEV) capped at 0.42, its weldability remains favorable. However, this grade does not include elements like chromium or nickel, meaning it lacks inherent corrosion resistance and might require protective measures like painting when exposed to the elements.

Mechanically, S275J0 exhibits decent tensile strength and satisfactory ductility. Its elongation varies according to thickness, ensuring a balance between strength and flexibility. For instance, thinner sections can deform more before breaking, accommodating different requirements in practical applications.

Overall, S275J0 is a reliable choice for standard structural uses, balancing weldability, strength, and impact resistance. However, in settings where specific corrosion resistance or higher strength is needed, alternative grades may be more appropriate.

Mechanical Properties

Chemical Properties

Applications

S275J0 is a versatile structural steel grade prominently utilized in fields that require reliable strength and good weldability at an economical cost. The applications of S275J0 are broad, spanning various construction and engineering sectors.

S275J0 steel is widely used in heavy machinery and equipment manufacturing, including components for machines like cranes, excavators, and bulldozers. Its robust yet adaptable nature makes it ideal for railway wagons, freight cars, and parts of transmission towers, where durability and resistance to various operational stresses are valued. The automotive industry also benefits from S275J0, employing it in the production of non-critical components such as trailers and structural supports for chassis.

Additionally, the grade finds use in the production of pipes, power plant equipment, shipbuilding, and offshore structures, supporting the oil and gas industries with reliable, sturdy material for demanding conditions. However, S275J0's main limitation is its corrosion resistance. It is not recommended for environments with high moisture or marine conditions without additional protective coatings. Despite this, in standard industrial and environmental settings, its performance and practicality make it a popular choice for engineers and builders.