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ASTM A36 / SA36 Round Bar is a widely used carbon structural steel round bar manufactured to meet the ASTM A36 / ASME SA36 specification. It is a low-carbon steel grade known for its excellent weldability, good strength, and toughness, making it suitable for a wide range of structural and fabrication applications.
A36 steel round bar has a balanced chemical composition of carbon, iron, manganese, silicon, phosphorus, sulfur, and a small amount of copper that ensures solid mechanical properties and ease of working. Typical mechanical properties include an ultimate tensile strength of 400–550 MPa and a yield strength of around 250 MPa, with good elongation for forming and machining operations.













