Mild Steel Hexagon Bar

Hot rolled mild steel hexagon bar is produced by heating steel above its recrystallization temperature and then rolling it into the desired hexagonal shape. This process results in a bar with a rougher surface finish and looser dimensional tolerances. However, hot rolled steel is more ductile, making it easier to work with in applications that require welding, bending, or forming. Hot rolled mild steel hexagon bar is commonly used in structural components, general fabrication, and construction due to its cost-effectiveness and versatility.

Cold rolled mild steel hexagon bar undergoes additional processing at room temperature, which refines its microstructure and increases its strength. Compared to hot rolled steel, cold rolled steel has a smoother surface finish, tighter dimensional tolerances, and improved mechanical properties. The strain-hardening process enhances its hardness and yields a stronger material suitable for precision machining and applications requiring high accuracy. Because of its enhanced strength and surface quality, cold rolled mild steel hexagon bar is often used in manufacturing precision components such as fasteners, shafts, and machine parts.

Benefits of Mild Steel Hexagon Bar

Mild steel hexagon bar is a versatile material that combines strength, machinability, and cost-effectiveness. These are some key characteristics and benefits of mild steel hexagon bar:

Strength and Durability – Mild steel hexagon bar has a yield strength typically ranging from 250 MPa to 400 MPa, depending on the grade and processing method. This allows it to withstand mechanical stress and maintain structural integrity over time.

Good Machinability – Mild steel hexagon bar can be cut, drilled, turned, and milled with minimal wear on cutting tools. Some grades are designed for high-speed machining, making them ideal for producing components like nuts, bolts, and hydraulic fittings.

Corrosion Resistance – While mild steel itself is not very resistant to corrosion, it can be treated with coatings such as galvanization, painting, or powder coating to enhance its durability in outdoor or harsh environments.

Weldability – Mild steel hexagon bar has excellent weldability, allowing it to be easily joined with other metal components using standard welding techniques. This makes it suitable for fabrication work where multiple sections need to be connected securely.

Applications for Mild Steel Hexagon Bar

Mild steel hexagon bar is widely used across multiple industries due to its strength, machinability, and cost-effectiveness. Its unique hexagonal shape provides greater surface area for gripping and fastening applications, making it a preferred material for various structural and mechanical components.

Automotive Industry – Mild steel hexagon bar is used for manufacturing fasteners such as bolts, nuts, and studs. It is also used in suspension systems and engines.

Construction – Mild steel hexagon bar is utilized in structural frameworks, reinforcement bars, and brackets. It provides reliable support for buildings, bridges, and infrastructure projects.

Manufacturing and Machining – Mild steel hexagon bar is widely used for fabricating machine components, tools, and mechanical parts. Its ability to be easily drilled, machined, and shaped makes it ideal for producing gears, ratchets, tool holders, and other precision-engineered parts.

Engineering and Fabrication – Mild steel hexagon bar serves as a base material in the production of hydraulic fittings, connectors, and industrial fasteners.

How is Mild Steel Hexagon Bar Measured?

Mild steel hexagon bar is measured by its width across the flats, not from corner to corner. The across-flats measurement directly correlates to how the bar will interact with tools, fasteners, and other structural components.

Mild steel hexagon bar sizes typically range from 0.25 to 3 inches or more, with increments in 1/8-inch or 1/4-inch steps depending on industry requirements.