1.1248 / C75S / AISI 1075 / High-Carbon Spring Steel

Sheet Steel 1.1248 / St75

📌 Overview and Technical Specifications

Sheet steel 1.1248 / St75 is a carbon structural steel with high strength and good mechanical properties. It is used for manufacturing components that operate under high loads, as well as in mechanical engineering and construction.

🛠 Specifications:

• Hardness: 170–220 HB
• Thickness: from 2 mm to 100 mm
• Yield strength: 450–550 MPa
• Tensile strength: 700–850 MPa
• Elongation: 10–15%

🧪 Chemical Composition

• Carbon (C): 0.70 – 0.80%
• Silicon (Si): 0.17 – 0.37%
• Manganese (Mn): 0.50 – 0.80%
• Phosphorus (P): ≤0.04%
• Sulfur (S): ≤0.04%

⚙ Applications

Steel 1.1248 / St75 is widely used in the following industries:

• 🏗 Construction industry (metal structures, fastening elements)
• ⚙ Mechanical engineering (gears, axles, shafts)
• 🚜 Tool manufacturing (moving mechanisms, cutting parts)
• 🔩 Components operating under high mechanical loads

🌟 Features

• ✅ High strength and wear resistance
• ✅ Good machinability and heat treatment capability
• ✅ High impact toughness
• ✅ Suitable for use in demanding operating conditions

Sheet steel delivery forms 1.1248 / C75S / St75