EN10025-4 S355M is a fine-grained structural steel plate grade with a nominal yield strength of 355 MPa, designed to meet the specific requirements of various industries that demand high strength and excellent toughness at low temperatures. This grade is part of the European standard for hot-rolled structural steel products and is particularly suited for applications where high strength, low temperature toughness, and weldability are key factors.

Chemical Composition:

The chemical composition of S355M is carefully controlled to ensure the required mechanical properties and weldability. The typical chemical composition is as follows:

· Carbon (C): ≤ 0.18%

· Silicon (Si): ≤ 0.55%

· Manganese (Mn): ≤ 1.60%

· Phosphorus (P): ≤ 0.025%

· Sulfur (S): ≤ 0.020%

· Aluminum (Al): ≥ 0.020%

· Niobium (Nb): ≤ 0.05%

· Titanium (Ti): ≤ 0.03%

· Vanadium (V): ≤ 0.10%

· Nitrogen (N): ≤ 0.015%

Mechanical Properties:

The mechanical properties of S355M are guaranteed through a thermo-mechanical rolling process, which provides the steel with its fine-grained structure. The typical mechanical properties are as follows:

· Yield Strength: ≥ 355 MPa

· Tensile Strength: 470 - 630 MPa

· Elongation: ≥ 22%

· Impact Energy (Charpy V-notch test at -20°C): ≥ 27 J

Thermal Treatment:

S355M steel plates are supplied in the thermomechanically rolled condition. This process involves controlled rolling and cooling to achieve the desired mechanical properties without the need for further heat treatment.

Low-Temperature Impact Test:

The steel is subjected to a low-temperature impact test at -20°C to ensure that it maintains its toughness and impact resistance in cold environments. This is crucial for applications in arctic conditions or other low-temperature settings.

Available Dimensions:

TJC Steel Group offers S355M steel plates in a wide range of sizes, with thicknesses typically ranging from 6mm to 200mm, widths up to 4000mm, and lengths up to 18000mm. Custom sizes are also available upon request to meet specific project requirements.

Main Applications:

S355M is widely used in various industries and applications, including:

· Construction of bridges and other structures requiring high strength and toughness

· Offshore structures and marine applications

· Wind turbine towers

· Heavy machinery and equipment manufacturing

· Pressure vessels and storage tanks

· Earthmoving and mining equipment

TJC Steel Group Supply Cases:

TJC Steel Group has supplied S355M steel plates to numerous projects around the world, including:

· A European bridge construction project, where the high strength and excellent toughness of S355M were crucial for ensuring the structure's durability and safety.

· An offshore oil platform in the North Sea, where the steel's ability to withstand low temperatures and harsh marine environments was essential.

· A wind farm in China, where the steel was used for the construction of wind turbine towers, taking advantage of its superior fatigue resistance and weldability.

TJC Steel Group is committed to providing high-quality steel products and services, ensuring customer satisfaction with every delivery. Their expertise in handling EN10025-4 S355M and other structural steel grades makes them a reliable partner for projects requiring the highest standards of material performance.