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S355J2 (St52-3N) – 1.0577 Steel

S355J2 , also known as St52-3, with the material number 1.0577 , is a low-alloy, high-strength structural steel. Due to its balanced properties of strength, toughness, and weldability, this steel is a versatile material used in a wide range of construction and engineering applications.

Meaning of the Codes and Standards

S355J2:

• The letter "S" stands for "Structural," indicating a structural steel.
• The number "355" represents the minimum yield strength of 355 MPa (megapascals).
• The symbol "J2" indicates that the material has a minimum impact energy of 27 Joules at -20°C, signifying good toughness at low temperatures.

St52-3N:

• The term is derived from the German DIN standard.
• The letters "St" stand for "Steel."
• The number "52" indicates a tensile strength of approximately 470 - 630 MPa. St52-3 is a modernized steel that has been optimized in its chemical composition to meet stricter impact toughness requirements.

Differences Between S355J2 and S355JR

The main difference between these two structural steels lies in their suitability for different operating temperatures. S355J2 steel is better suited for low-temperature applications due to its better performance at lower temperatures compared to S355JR. While S355JR has a minimum impact energy of 27 Joules at 20°C in the Charpy-V test, S355J2 also has a minimum impact energy of 27 Joules, but at -20°C.

Properties of S355J2 Steel

S355J2 steel is manufactured according to the EN 10025-2 standard. This standard describes the properties and production requirements for hot-rolled structural steels. EN 10025-2 is a widely accepted and commonly used standard in Europe, containing various classifications for structural steels.

The S355J2 steel has specific mechanical and chemical properties under this standard. Additionally, the S355J2 +N steel is referred to as normalized steel, which means that it has been subjected to a normalization process after production. This improves the steel's uniformity and its mechanical properties, making it more suitable for demanding applications.

Applications of S355J2 Steel

S355J2 steel is used in many different fields, especially in engineering and construction projects. Due to its high strength, good weldability, and toughness, it is suitable for a variety of demanding applications.

• Bridge Construction: S355J2 steel is widely used in bridge construction due to its high strength and excellent weldability. Bridge beams, support structures, and other critical components are made from this steel.
• Industrial Buildings: This steel is used in large industrial buildings such as factory halls, warehouses, and hangars, where structural integrity and strength are essential.
• Shipbuilding: S355J2 steel is used in shipbuilding, particularly in the hull and structural components. It is also employed in machinery and equipment production, agricultural machinery, cranes, lifting and conveyor technology, the automotive industry, and general machinery manufacturing.

Equivalent Grades of S355J2 Steel

S355J2 has different equivalents in various countries and standards. These include:

• Germany (DIN Standard): St52, St52-3N
• USA: A656

Mechanical Properties of S355J2 Steel

1. Yield Strength: The minimum yield strength of S355J2 steel is 355 MPa, which indicates the minimum stress the material can withstand without permanent deformation.
2. Tensile Strength: The tensile strength typically ranges between 470 and 630 MPa. This refers to the maximum stress the material can withstand before breaking.
3. Elongation: Between 16% and 20%, depending on the sample length. This indicates the material's ability to elongate before breaking, reflecting its toughness.
4. Impact Toughness: At least 27 J at -20°C. This measures the material's ability to absorb sudden impacts without breaking, typically tested via the Charpy-V-Notch test at specific temperatures.
5. Hardness: Approximately 146-187 HB (Brinell Hardness). This measures the material's resistance to applied force on its surface.
6. Elastic Modulus: Approximately 210 GPa. This indicates the ratio between stress and strain during the material's elastic deformation.

S355J2 is highly valued for its versatile mechanical properties, making it ideal for various structural applications that require both strength and toughness, even in low-temperature environments.

Chemical Composition of S355J2 Steel

S355J2 is a high-strength, weldable, and impact-resistant structural steel, especially at low temperatures. It is manufactured according to the EN 10025-2 standard. The chemical composition of S355J2 steel directly influences its mechanical properties, such as strength, toughness, resistance, and weldability. Here are the key chemical elements of this steel:

Prices for S355J2 Steel

The prices for S355J2 steel can vary depending on several factors, such as thickness, size, order quantity, and delivery time. Hasçelik, one of the leading steel manufacturers in Turkey, offers a wide range of S355J2 steel products and ensures high-quality standards. The S355J2 steel products from Hasçelik provide excellent quality that meets customer needs.

• Competitive Prices: Hasçelik offers high-quality S355J2 steel products at competitive prices to ensure customers find solutions that fit their budget.
• Wide Product Portfolio: Hasçelik ensures a variety of sizes and specifications are available to meet the different project requirements.
• Quality Assurance: Hasçelik products comply with high-quality standards, ensuring customers can rely on the steel solutions they choose.

For information on stock and pricing, you can send your inquiries through Hasçelik's communication channels and receive tailored solutions for your projects.