C-shaped steel is typically made of carbon structural steel or low-alloy high-strength steel, with the specific material selection depending on the application and performance requirements. The following are common material types:
1. Carbon Structural Steel
Q235: The most commonly used material, possessing good weldability and ductility, suitable for general light structures (such as factory purlins, supports, etc.).
Q195/Q215: Lower strength, mostly used for non-critical components with low load-bearing requirements.
2. Low-Alloy High-Strength Steel
Q345 (16Mn): Higher strength than Q235, suitable for applications requiring higher load-bearing capacity (such as large-span structures or heavy-duty supports).
Other Alloy Steels: Alloy steels with added trace elements may be selected for special environments (such as corrosion resistance, low temperatures).
3. Galvanized Material
Some C-shaped steels are treated with hot-dip galvanizing (such as SGCC, SGH340) or aluminum zinc plating to improve rust resistance, making them suitable for humid or outdoor environments.
