P275NH / 1.0487 High-Temperature Pressure Vessel Steel

Steel P275NH

📌 Overview and Technical Specifications

Steel P275NH is a non-alloy structural steel designed for pressure vessels, known for its high ductility, impact toughness, and excellent welding properties. It is widely used in the energy and petrochemical industries.

🛠 Specifications:

• Hardness: ≤ 200 HB
• Thickness: from 3 mm to 100 mm
• Yield strength: ≥ 275 MPa
• Tensile strength: 430–580 MPa
• Elongation: 21–23%

🧪 Chemical Composition

• Carbon (C): ≤0.16%
• Silicon (Si): ≤0.40%
• Manganese (Mn): 0.80 – 1.50%
• Phosphorus (P): ≤0.025%
• Sulfur (S): ≤0.015%
• Aluminum (Al): ≥0.020%
• Chromium (Cr): ≤0.30%
• Nickel (Ni): ≤0.50%
• Molybdenum (Mo): ≤0.08%

⚙ Applications

Steel P275NH is widely used in the following industries:

• 🔥 Manufacturing of boilers and heat exchangers
• 🛢 Production of tanks and pressure vessels
• 🏭 Chemical and petrochemical industry
• ⚡ Components for power plants

🌟 Features

• ✅ High ductility and impact toughness
• ✅ Resistance to high temperatures and pressure
• ✅ Excellent weldability without the need for heat treatment
• ✅ Superior resistance to corrosion

P275NH flat steel delivery forms