S275J0 is a low-alloy high-strength structural steel that belongs to the grade in the European standard

S275J0 is a low-alloy high-strength structural steel that belongs to the grade in the European standard (EN 10025). This steel is mainly composed of elements such as iron, carbon, manganese, silicon, phosphorus and sulfur. S275J0 steel plate has excellent mechanical properties and welding properties, so it has been widely used in construction, pidges, vehicle manufacturing, machinery manufacturing and other fields. The "S" in its grade indicates structural steel, "275" indicates that the lower limit of yield strength is 275Mpa, and "J0" indicates that the steel plate was subjected to impact energy tests at 0°C.

The chemical composition of S275J0 mainly includes iron, carbon (C), silicon (Si), manganese (Mn), phosphorus (P), sulfur (S) and other elements. The specific chemical composition ratio is as follows:

C	Mn	P	S	Ni	Cr	Cu	N	Mo
≤0.18	≤1.50	≤0.03	≤0.03	≤0.42	≤0.29	≤0.55	≤0.012	≤0.11

The production method of S275J0 steel plate mainly includes the following steps: ironmaking, steelmaking, continuous casting, and steel rolling.

S275J0 steel has the following main features:

1. Good strength and toughness: The lower limit of yield strength of S275J0 steel is 275MPa. It has high tensile strength and yield strength while maintaining good toughness, allowing it to show good deformation ability when bearing load. and impact resistance.

2. Excellent welding performance: The chemical composition and physical properties of S275J0 steel make it have good welding performance, easy to weld with other steel materials, and is widely used in engineering structures that require welding connections.

3. Lower carbon content: Compared with some other steels, S275J0 has a lower carbon content, which makes it have higher plasticity and toughness, reducing the pittleness tendency of steel, thereby improving its reliability and reliability in use. safety.

4. Better low-temperature toughness: S275J0 steel shows better low-temperature toughness after specific impact energy experiments (usually conducted at 0°C), allowing it to maintain good mechanical properties and stability in low-temperature environments. .

5. Good processing performance: S275J0 steel is easy to process and form, and can be processed through various processes such as hot rolling, cold rolling, cutting, and bending to meet the needs of various engineering structures.

S275J0 steel has a wide range of applications and is especially suitable for occasions that need to withstand medium-strength loads and structural requirements. The following are some of the main application areas of S275J0 steel: Construction and civil engineering: S275J0 steel is often used in pidge beams, columns, plates and other components due to its high strength and excellent welding performance. Used to construct structural parts such as frames, beams, and columns of high-rise buildings, as well as floor slabs, wall panels, etc. Support structures and connectors in the construction of roads, railways, tunnels, etc. Various types of mechanical equipment: S275J0 steel can be used to manufacture shells, packets, bases and other components of various types of mechanical equipment. Structural parts of vehicles, ships, etc., including frames, hulls, etc. Oil and gas equipment: such as storage tanks, pipelines, drilling platforms, etc. Chemical equipment: used to manufacture structural parts of various chemical equipment, such as reactors, towers, etc. Offshore Platform: Used to build offshore oil and gas extraction platforms. Ships and marine engineering equipment: such as ship hulls, structural parts of marine engineering equipment, etc. Mining equipment: such as mining vehicles, mining machinery, etc. Agricultural equipment: Structural parts of agricultural machinery such as tractors and harvesters. Mold manufacturing: As the base material of molds, it is used to manufacture various metal forming molds.