C22.8 / 1.0460 Structural Steel

Steel Circle Delivery FormsC22.8 / P250GH / st20K

Steel Round C22.8 / P250GH / St20K

📌 Overview and Technical Specifications

Steel round C22.8 / P250GH / St20K is a low-carbon structural steel with enhanced strength and good plasticity characteristics. It is widely used in the energy sector, mechanical engineering, and high-pressure pipelines due to its excellent weldability and heat resistance.

🛠 Specifications:

• Hardness in delivery condition: 130–180 HB
• Yield strength: ≥ 250 MPa
• Tensile strength: 410–530 MPa
• Elongation: 20–24%

🧪 Chemical Composition

• Carbon (C): 0.16 – 0.22%
• Silicon (Si): 0.10 – 0.35%
• Manganese (Mn): 0.40 – 0.90%
• Phosphorus (P): ≤ 0.025%
• Sulfur (S): ≤ 0.020%

⚙ Applications

Steel round C22.8 / P250GH / St20K is widely used in the following industries:

• 🔩 Manufacturing of high-pressure pipeline components
• 🏭 Mechanical engineering and production of pressure vessels
• 🚜 Agricultural and construction equipment
• ⚡ Energy sector, including steam and hot-water boilers
• 🏗 Metal structures operating under high-temperature conditions

🌟 Features

• ✅ Excellent weldability without preheating
• ✅ High strength with low carbon content
• ✅ Good plasticity and impact toughness
• ✅ Resistance to high temperatures and pressure
• ✅ Long service life under harsh operating conditions