A carbon steel round bar is a cylindrical metallic product primarily composed of iron and carbon, with carbon content ranging from 0.05% to 2.1% by weight. The cylindrical shape offers uniform structural performance in all directions, ideal for load-bearing components requiring rotational symmetry. Diameters typically range from 6mm to 500mm.

1. Low-Carbon Steel (C ≤ 0.25%)

• Properties: Excellent ductility and weldability. Tensile strength 300-500 MPa.
• Applications: Shafts, gears, construction reinforcement, and automotive chassis.

2. Medium-Carbon Steel (C 0.25%-0.60%)

• Properties: Responsive to quenching and tempering, hardness up to HRC 50.
• Applications: Crankshafts, axles, connecting rods, and industrial gears.

3. High-Carbon Steel (C 0.60%-2.1%)

• Properties: Extremely high hardness (HRC 55-65) and wear resistance.
• Applications: Cutting tools, knives, drills, and springs.