EN10025-4 S420M is a fine-grained structural steel plate grade with a nominal yield strength of 420 MPa, designed to meet the specific requirements of various construction and engineering applications. This grade is part of the European standard for hot-rolled structural steels, and it is particularly appreciated for its excellent mechanical properties and weldability.

Chemical Composition:

The chemical composition of S420M is strictly controlled to ensure the required mechanical properties and weldability. The typical chemical composition is as follows:

· Carbon (C): ≤ 0.19%

· Silicon (Si): ≤ 0.60%

· Manganese (Mn): ≤ 1.70%

· Phosphorus (P): ≤ 0.025%

· Sulfur (S): ≤ 0.015%

· Aluminum (Al): ≥ 0.020%

· Niobium (Nb): ≤ 0.05%

· Titanium (Ti): ≤ 0.03%

· Vanadium (V): ≤ 0.12%

· Nitrogen (N): ≤ 0.015%

Mechanical Properties:

The mechanical properties of S420M are as follows:

· Yield Strength: ≥ 420 MPa

· Tensile Strength: 520 - 680 MPa

· Elongation: ≥ 19%

· Impact Energy : ≥ 27 J

Thermal Treatment:

S420M steel plates are supplied in the thermomechanically rolled condition (M), which provides a fine-grained microstructure and enhanced mechanical properties without the need for further heat treatment after delivery.

Low-Temperature Impact Test:

The material is subjected to a low-temperature impact test at -20°C to ensure its toughness and resistance to brittle fracture under such conditions.

Available Dimensions:

TJC Steel Group offers S420M 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:

S420M steel plates are widely used in various applications where high strength and good toughness are required at low temperatures. Common applications include:

· Bridges

· Construction of offshore structures

· Power plants

· Mining and earth-moving equipment

· Load-bearing parts for mobile cranes

TJC Steel Group Supply Cases:

TJC Steel Group has supplied S420M steel plates to numerous projects around the world, including:

· A European bridge construction project, where the high strength and excellent toughness of S420M were crucial for the design and safety of the bridge.

· An offshore oil platform in the North Sea, where the material's resistance to low-temperature impact was essential for the structure's durability in harsh marine conditions.

· A power plant in Asia, where the steel plates were used for the construction of pressure vessels and other critical components.

TJC Steel Group's commitment to quality and customer satisfaction ensures that each delivery meets the stringent requirements of the EN10025-4 standard, providing reliable and durable steel solutions for demanding applications.