3003
Aluminum Coil: High-Quality, Corrosion-Resistant Alloy for Industrial and Commercial Applications This 3003 aluminum coil is a premium non-heat-treatable AL-Mn alloy engineered for superior formability, excellent weldability, and outstanding resistance to environmental degradation. With approximately 10% higher strength than the widely used 1100 alloy, it serves as an ideal material for applications demanding durability in humid or corrosive conditions. Whether used in refrigeration systems, transportation components, or structural assemblies, this aluminum coil offers consistent performance across various industries globally. Its mechanical properties are enhanced through cold working processes—making it highly suitable for deep drawing, bending, and fabrication without compromising integrity. Key Features - Exceptional corrosion resistance for long-term reliability in wet or chemical environments - Excellent weldability and ductility in annealed (O temper) condition - Moderate tensile strength with high elongation, especially in thinner gauges - Wide range of tempers including O, H12, H14, H16, H18, H22, H24, H26, H28, H32, H34, H36, and H38 - Compliant with international standards such as ASTM B209, EN 573, and EN 485 - Available in thicknesses from 0.2 mm to 7.0 mm, widths up to 2200 mm, and lengths up to 6000 mm Detailed Description Manufactured using advanced rolling techniques, 3003 aluminum coils exhibit uniform thickness and surface finish, ensuring predictable behavior during forming operations. The alloy’s composition includes manganese as the primary alloying element, which improves strength while maintaining workability—a critical factor for fabricators and engineers. Unlike heat-treatable alloys, its mechanical characteristics are tailored through strain hardening, allowing flexibility in design and production. For example, in the O temper state, it provides maximum ductility (up to 25% elongation), making it perfect for deep-drawn parts like beverage bottle caps, cosmetic containers, and liquid storage tanks. As the temper increases (e.g., H14 or H18), yield strength rises significantly—reaching 17 ksi in some cases—while still preserving adequate bendability for complex geometries. Physical properties such as thermal conductivity (112 Btu/ft hr °F) and low density (0.099 lb/in³) make it energy-efficient and lightweight compared to steel alternatives. Common Applications Ideal for use in HVAC systems, marine structures, automotive body panels, pressure vessels, and industrial enclosures, this aluminum coil excels where weight savings, corrosion protection, and ease of assembly matter most. It is frequently selected for shipbuilding, fireproof equipment, drilling rigs, and even missile components due to its balanced mix of strength and manufacturability. In commercial settings, it's often found in air ducts, refrigerator casings, and signage frames—where both aesthetics and functionality are essential. Additionally, its ability to be easily joined via welding or riveting makes it a preferred choice for modular construction and field assembly projects worldwide. User Feedback Users consistently praise the material’s versatility and reliability. Many manufacturers report reduced tool wear during stamping and forming processes, while others highlight improved product lifespan when exposed to coastal or high-humidity environments. Engineers appreciate the predictable mechanical response across different tempers, enabling precise control over part performance. Overall, users find that 3003 aluminum coils provide an optimal blend of cost-effectiveness, quality, and adaptability for diverse engineering needs. Frequently Asked Questions What makes 3003 aluminum better than 1100? 3003 contains manganese, offering about 10% greater strength while retaining excellent formability and weldability—ideal for applications requiring more robust yet flexible materials. Is it suitable for outdoor installations? Yes, thanks to its natural oxide layer, it resists rust and weathering, making it well-suited for exterior architectural elements, transport trailers, and utility enclosures. Can it be bent without cracking? In lower tempers like O or H12, yes—it maintains good bendability, especially when the radius-to-thickness ratio is maintained within recommended limits. How does it compare to stainless steel? While less strong than certain grades of stainless steel, 3003 offers better machinability, lighter weight, and comparable corrosion resistance in many environments—at a fraction of the cost. Does it meet export packaging requirements? Absolutely—it is packed on wooden pallets with protective film, craft paper, and anti-blushing agents to ensure safe transit, meeting global shipping standards for bulk cargo.
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