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S355J2C (St52-3N) – 1.0579 Steel

S355J2C (St52-3N) – 1.0579 steel is a type of structural steel known for its high strength and good weldability. It is commonly used in construction and engineering projects. S355J2C is the cold-drawn version of the S355J2 steel. This steel is manufactured according to the European standard EN 10025-2 and possesses a range of mechanical and chemical properties.

Meaning of Designations and Standards

S355J2C:

• The "S" stands for "Structural", indicating it is structural steel.

• The number "355" indicates the minimum yield strength of 355 MPa (megapascals).

• The "J2" indicates that the material has a minimum Charpy V-notch impact energy of 27 Joules at -20°C, meaning it has good toughness at low temperatures.

• The "C" indicates that the steel has been cold-drawn.

St52-3N:

• This designation is derived from the German DIN standard.
• "St" stands for "Steel".
• The number "52" indicates a typical tensile strength of 470-630 MPa.

Differences Between S355J2 and S355J2C

This steel grade is typically subjected to a normalized rolling process, ensuring a homogeneous microstructure. The letter "C" indicates that the steel is suitable for cold drawing. The cold drawing process results in higher strength, hardness, and more precise dimensional tolerances. In cases where a more precise surface quality is required, S355J2C is preferred.

Properties of S355J2C Steel

S355J2C steel is used in a variety of applications such as bridges, buildings, cranes, machine constructions, and other heavy industrial projects. Due to its high strength and durability, it is a reliable choice for various construction projects. The steel is characterized by excellent weldability and can be easily processed using various welding methods. Additionally, machining this steel is generally straightforward, making it easier to use in different machinery and assembly processes.

Applications of S355J2C Steel

S355J2C steel is commonly used in bridges, buildings, cranes, machine constructions, and other heavy industrial applications. Due to the cold drawing process, it is particularly suited for projects that require high strength, good impact toughness, and precise dimensional tolerances. This steel is widely used in the engineering and construction industries.

Equivalent Grades of S355J2C Steel

S355J2C corresponds to different grades in various countries and standards. For example, according to the German DIN standard, it corresponds to grade St52-3N.

Mechanical Properties of S355J2C Steel

• Yield Strength: The minimum yield strength of S355J2C steel is 355 MPa. This represents the maximum stress the material can withstand without permanent deformation.
• Tensile Strength: The tensile strength typically ranges from 470 to 630 MPa. This indicates the maximum stress the material can endure before fracture.
• Elongation at Fracture: The elongation at fracture varies between 12% and 16% depending on the sample length or thickness. It describes the material's ability to stretch until fracture and is expressed as the percentage increase in its original length, showing the material's ductility.
• Impact Toughness: The minimum impact toughness is 27 J at -20 °C. This measures the material's ability to withstand sudden shocks without breaking. It is often measured using the Charpy V-notch impact test and is expressed as the energy required at a specific temperature.
• Hardness: The hardness is approximately 146–187 HB (Brinell Hardness). This indicates the material's resistance to applied surface force.
• Elastic Modulus: The elastic modulus is about 200–215 GPa. This represents the ratio of stress to strain during the elastic deformation of the material.

Chemical Composition of S355J2C

The chemical composition of S355J2C steel is determined by the specific proportions of various elements that are crucial for the mechanical properties of the steel. The table below explains the chemical elements and their proportions:

• Carbon (C): Increases the hardness and strength of the steel.
• Manganese (Mn): Improves the strength and machinability of the material.
• Phosphorus (P) and Sulfur (S): Affect the machinability of the steel.
• Silicon (Si): Enhances the structural stability of the steel.

This combination gives S355J2C steel important properties such as high strength, good weldability, and impact toughness.

Prices for S355J2C Steel

The prices for S355J2C steel may vary depending on market conditions, manufacturer, order volume, and other factors. Steel prices are subject to constant fluctuations due to supply and demand, raw material costs, and other economic factors.
Hasçelik, one of Turkey's leading steel producers, offers a wide range of products and the highest quality standards for S355J2C steel. For your pricing inquiries, you can contact us through our communication channels.