SS400 and A36 mild steel equal angle steel is a high-reliability structural component engineered for diverse industrial, commercial, and residential construction applications, integrating the robust mechanical properties of two globally recognized mild steel grades. This precision-manufactured equal-leg angle steel features a symmetrical L-shaped design, combining the cost-effectiveness and processability of A36 with the consistent performance of SS400, making it an indispensable choice for load-bearing, supporting, and connecting scenarios across various projects worldwide.
Crafted from two premium mild steel grades-A36 and SS400-this equal angle steel offers versatile performance tailored to different project requirements, while retaining the excellent processability inherent to mild steel. A36, a globally acclaimed carbon structural steel grade compliant with ASTM standards, boasts a minimum yield strength of 250 MPa and tensile strength ranging from 400 to 550 MPa. Its controlled low-carbon composition imparts exceptional ductility, weldability, and machinability, allowing easy cutting, bending, drilling, and welding-critical for on-site fabrication and seamless integration with other structural components.
SS400, a standard Japanese industrial mild steel grade compliant with JIS G3101, delivers consistent mechanical performance with a minimum yield strength of 245 MPa and tensile strength ranging from 400 to 510 MPa. It shares excellent processability with A36, including superior weldability and formability, making it suitable for both domestic and cross-border projects, especially those requiring compatibility with Japanese industrial standards. Both grades are classified as mild steel, ensuring they balance strength and cost-effectiveness, catering to light to medium-duty structural needs.
The defining structural feature of this product is its symmetrical equal-leg L-shaped cross-section, forming a precise 90-degree right angle with identical leg lengths and uniform thickness across the entire cross-section. This design ensures uniform force distribution, minimizing stress concentration points and maximizing structural rigidity-essential for maintaining stability in supporting and connecting applications. The equal-leg configuration simplifies assembly and ensures compatibility with other structural components such as beams, columns, and trusses, streamlining construction and fabrication processes.
Manufactured through a precision hot-rolling process, every batch of SS400 and A36 mild steel equal angle steel undergoes stringent quality control to ensure structural integrity and dimensional precision. High-quality steel billets of A36 or SS400 are heated to a controlled temperature of approximately 1200℃-above the recrystallization temperature-to soften the material, then subjected to rough rolling to form the initial L-shape, followed by precision rolling to achieve uniform leg width, consistent thickness, accurate right-angle alignment, and a smooth surface finish. Post-rolling, the angle steel undergoes controlled cooling to refine the grain structure, eliminate internal stresses, and enhance overall toughness, ensuring each piece meets rigorous industrial standards.
This equal angle steel is available in a comprehensive range of specifications to accommodate diverse project needs, with leg lengths ranging from 20mm to 200mm and thicknesses from 3mm to 24mm. Standard lengths are 6m, 9m, or 12m, and customized cutting lengths are available to adapt to specific project designs, reducing material waste and improving construction efficiency. The equal-leg design and dual material options allow engineers and contractors to select the optimal grade based on load requirements and project standards.
The excellent processability of both A36 and SS400 mild steel makes this equal angle steel highly versatile for various fabrication techniques. It can be seamlessly welded, bolted, or fastened to other steel sections, enabling the construction of complex structural frameworks. Additionally, its mild steel composition ensures compatibility with surface treatments such as painting, galvanization, or powder coating, further enhancing corrosion resistance for outdoor or harsh industrial environments-extending the product's service life and reducing maintenance costs.
Widely applied in diverse industries, SS400 and A36 mild steel equal angle steel is a foundational component for numerous projects. It is commonly used in residential and commercial building frames, roof trusses, and wall brackets; in industrial manufacturing for equipment frames, conveyor systems, and storage racks; in light-duty infrastructure projects for auxiliary supports; and in custom fabrication for architectural features and machinery brackets. Its dual material options, reliable performance, and universal compatibility make it a preferred choice for engineers and contractors seeking a cost-effective, high-performance structural solution.
