Zhongxi Metal offers high-quality carbon steel round bars in various lengths, diameters, and finishes. Our carbon steel rods are available in hot-rolled and cold-rolled techniques and meet international standards. Suitable for construction, automotive, and other industries, our carbon steel bars are known for their strength, durability, and cost-effectiveness. Contact us for more information and reliable steel procurement services.

Q195 Carbon Steel Round Bar is a low-carbon structural steel with a carbon content of 0.06-0.12%, supplemented by manganese and silicon. It offers a tensile strength of 315-430 MPa and excellent plasticity (elongation ≥33% for diameters ≤16mm), enabling easy welding, cold forming, and machining. Widely used in construction, automotive, and light industrial sectors, it is ideal for manufacturing structural components like beams, bridges, vehicle frames, and fasteners, as well as pipes, wires, and general hardware due to its cost-effectiveness and reliability.

Q215 Carbon Steel Round Bar is a low-carbon structural steel with a carbon content of 0.12-0.20%, supplemented by manganese (0.30-0.60%) and silicon (≤0.25%). It offers a tensile strength exceeding 335 MPa and elongation over 31% (for diameters ≤16mm), ensuring excellent plasticity and toughness. Widely used in construction, automotive, and machinery sectors, it is ideal for structural components like beams, frames, gears, and vehicle chassis, as well as electrical equipment casings, due to its reliable performance and cost-effectiveness.

Q235 carbon steel round bar is a versatile structural material with moderate strength and excellent weldability. It contains slightly higher carbon content than Q195, offering better load - bearing capacity while maintaining good machinability. Widely used in construction, machinery manufacturing, and infrastructure projects, it suits applications like beams, brackets, and shafts. Its balanced mechanical properties and cost - effectiveness make it a popular choice for general - purpose engineering components requiring reliable performance.

Q345 Carbon Steel Round Bar is a low-alloy high-strength structural steel with a yield strength of 345 MPa, containing manganese, silicon, and trace alloying elements for enhanced toughness. It offers a tensile strength of 470–630 MPa, excellent weldability, and cold-forming capability, making it suitable for heavy-duty applications like bridges, buildings, machinery frames, and pressure vessels, where high load-bearing capacity and durability are critical.

S235JR Carbon Steel Round Bar is a European standard (EN 10025-2) non-alloy structural steel grade, equivalent to China's Q235B. With a carbon content ≤0.17-0.20%, manganese ≤0.65-1.40%, and trace silicon, phosphorus, and sulfur, it offers a balance of strength (yield ≥225-235 MPa, tensile 360-510 MPa) and ductility (elongation ≥18-26%). Widely used in construction, bridges, vehicles, and machinery, it excels in weldability and cold forming, requiring no preheating for welding. Its cost-effectiveness and reliability make it ideal for non-critical structural components and general engineering applications.

A36 Hot Roll Steel Round Bar is a widely used carbon structural steel with a carbon content typically around 0.25-0.29%. Known for its excellent weldability, formability, and moderate strength (yield strength ≥250 MPa), it is ideal for general construction, machinery parts, and fabrication. Its hot-rolled finish ensures ease of machining and is commonly used in structural supports, shafts, brackets, and non-critical load-bearing applications, balancing affordability and performance.

SS400 Carbon Steel Round Bar, compliant with Japan's JIS G3101 standard, is a low-carbon structural steel (C≤0.22%, Mn≤1.40%, Si≤0.35%, P≤0.045%, S≤0.050%). It combines good strength (tensile strength: 400-510 MPa; yield strength: ≥245 MPa for thicknesses <16mm) with excellent plasticity and weldability, making it ideal for construction, bridges, machinery, and automotive components. Widely used in structural frameworks, beams, vehicle chassis, and mechanical parts, it offers reliable performance and cost-effectiveness, though it requires corrosion protection and is unsuitable for extreme high-load applications.

4140 alloy steel round bar is a chromium - molybdenum steel renowned for its exceptional strength, toughness, and fatigue resistance. Enhanced with elements like manganese and molybdenum, it offers superior machinability and can be hardened via heat treatment. Ideal for high - stress applications, it is widely used in manufacturing gears, shafts, axles, and structural components in automotive, aerospace, and oil/gas industries. Its ability to withstand heavy loads and extreme conditions ensures reliable performance in demanding environments.

1095 Carbon Steel Round Bar is a high-carbon steel grade with 0.95-1.03% carbon content, offering exceptional hardness (57-60 HRC after heat treatment) and wear resistance, making it ideal for cutting tools, springs, and high-stress mechanical components. Its excellent tensile strength (exceeding 1180 MPa) and moderate toughness, achieved through manganese and phosphorus alloying, ensure durability in demanding applications like automotive springs, knife blades, and industrial blades.

1045 Carbon Steel Round Bar is a medium-carbon steel grade (AISI 1045) with a carbon content of 0.42-0.50%, supplemented by manganese (0.60-0.90%) and silicon (0.17-0.37%). It offers a balance of strength (tensile strength ≥585 MPa, yield strength ≥450 MPa) and ductility (elongation ≥12%), making it suitable for manufacturing mechanical components like gears, shafts, and axles. Widely used in industrial machinery, automotive parts, and tool-making, it can be supplied in hot-rolled, normalized, or quenched-and-tempered conditions. Its weldability and machinability, combined with cost-effectiveness, ensure its popularity in structural and load-bearing applications.

1018 Carbon Steel Round Bar is a versatile low-carbon steel grade containing 0.15-0.20% carbon and 0.60-0.90% manganese, offering a balanced blend of strength, ductility, and weldability. With a tensile strength of ≥440 MPa and yield strength of ≥370 MPa, it exhibits excellent machinability and cold-forming capabilities, making it ideal for mechanical components like shafts, gears, and fasteners. Widely used in automotive, manufacturing, and construction sectors, its affordability and reliability in non-critical applications ensure continued popularity across industries.