S420ML / 1.8836 Thermomechanically Rolled Steel Plate

Steel S420ML

📌 Overview and Technical Specifications

Steel S420ML is a thermomechanically strengthened low-alloy structural steel with increased strength, excellent impact toughness, and high weldability. It is designed for operation in low-temperature conditions and under significant mechanical loads.

🛠 Specifications:

• Hardness: 180–250 HB
• Thickness: from 6 mm to 120 mm
• Yield strength: ≥ 420 MPa
• Tensile strength: 520–680 MPa
• Elongation: 15–22%

🧪 Chemical Composition

• Carbon (C): ≤0.18%
• Silicon (Si): ≤0.50%
• Manganese (Mn): 1.00 – 1.80%
• Phosphorus (P): ≤0.025%
• Sulfur (S): ≤0.015%
• Chromium (Cr): ≤0.30%
• Nickel (Ni): ≤0.50%
• Molybdenum (Mo): ≤0.20%
• Vanadium (V): ≤0.10%
• Niobium (Nb): ≤0.05%

⚙ Applications

Steel S420ML is widely used in the following industries:

• 🏗 Construction of bridges and metal structures
• 🚆 Manufacturing of railcars and transportation equipment
• ⚡ Energy infrastructure and wind power industry
• 🏭 Industrial structures and large-scale engineering projects
• 🌉 Hydraulic engineering structures and underwater constructions

🌟 Features

• ✅ High strength at low temperatures
• ✅ Excellent weldability without the need for preheating
• ✅ Outstanding impact toughness, especially at -50°C
• ✅ Optimal balance of strength and ductility
• ✅ Resistance to dynamic and cyclic loads

Forms of delivery of fine-grained structural steel after thermomechanical rolling S420ML EN 10025-4