5182 Aluminum Coils: High-Strength, Corrosion-Resistant Solution for Demanding Applications
Our 5182 aluminum coils are engineered for high-performance applications that demand exceptional strength, superior corrosion resistance, and reliable formability. As a premium aluminum-magnesium alloy, 5182 stands out in the 5xxx series with its optimized magnesium content (4.0-5.0%), delivering a perfect blend of mechanical performance and environmental durability. Non-heat-treatable but capable of achieving enhanced strength through cold working, this alloy is a trusted choice for industries facing harsh conditions or heavy-load requirements, including automotive, marine, aerospace auxiliary, and industrial manufacturing. Compliant with strict international standards (ASTM B209, EN 485-2, GB/T 3880), our 5182 aluminum coils ensure consistent quality, thickness uniformity, and performance stability for both standard production and custom projects. Below, we detail the core properties, technical specifications, key applications, and processing insights to help you fully harness the potential of this high-reliability aluminum solution.
Crafted from high-purity aluminum ingots and precise magnesium alloying, our 5182 coils undergo a refined production process to maximize performance. We start with advanced melting and homogenization techniques to ensure uniform alloy distribution, which is critical for achieving consistent strength and corrosion resistance across the entire coil. Depending on your application needs, we offer various tempers (O, H111, H112, H32, H34) processed via controlled cold rolling and annealing. Each coil undergoes rigorous quality inspections: laser-guided thickness measurement (tolerance as low as ±0.02mm), surface defect checks (ensuring smooth, burr-free surfaces), mechanical property testing (tensile, yield, elongation), and corrosion resistance verification (salt spray testing). The result is a 5182 aluminum coil with exceptional strength, outstanding corrosion resistance, and reliable formability-ready to tackle the most demanding fabrication challenges.
Core Properties of 5182 Aluminum Coils
5182 aluminum coils are renowned for their unique combination of high strength, superior corrosion resistance, and excellent formability-properties that make them indispensable for applications requiring durability under stress or in harsh environments. The optimized magnesium content in 5182 elevates its performance beyond standard 5xxx series alloys, making it a top choice for high-performance industries. Here are the key characteristics that set it apart:
1. Exceptional High Strength
With a magnesium content of 4.0-5.0%, 5182 alloy delivers impressive strength compared to other aluminum-magnesium alloys. Tensile strength ranges from 190 MPa (O temper, fully annealed) to 380 MPa (H34 temper, cold-worked), providing excellent load-bearing capacity for heavy-duty applications. This high strength ensures end products can withstand mechanical stress, impact, and vibration without deformation-ideal for automotive structural parts, marine components, and industrial equipment.
2. Superior Corrosion Resistance
5182 aluminum alloy exhibits outstanding corrosion resistance, particularly against seawater, salt spray, and harsh chemical environments. The magnesium content forms a dense, protective oxide layer on the surface, preventing oxidation, pitting, and stress corrosion cracking. Unlike many other alloys, 5182 performs exceptionally well in marine and coastal environments without the need for additional protective coatings. It also resists corrosion from mild acids, alkalis, and industrial pollutants, ensuring long-term durability in diverse operating conditions.
3. Excellent Formability & Weldability
Despite its high strength, 5182 retains excellent formability, making it suitable for complex fabrication processes such as deep drawing, stamping, bending, and rolling. It can be formed into intricate shapes with tight radii (minimum bend radius: 1x-3x material thickness, depending on temper), adapting to custom design requirements. Additionally, 5182 is highly weldable using standard methods (MIG, TIG, resistance welding) with minimal risk of cracking. The welds maintain good strength and corrosion resistance, ensuring structural integrity in assembled components.
4. Good Impact Resistance & Fatigue Strength
5182 aluminum alloy offers excellent impact resistance and fatigue strength, making it suitable for applications subjected to repeated stress or dynamic loads. This property is particularly valuable for automotive parts (e.g., door panels, hoods) that need to withstand minor collisions, and marine components exposed to wave impact. The alloy's ability to absorb energy without fracturing ensures long-term reliability in high-stress environments.
5. Lightweight & Cost-Effective
With a density of 2.66 g/cm³, 5182 aluminum is lightweight, making it an ideal choice for weight-sensitive applications (e.g., automotive, aerospace auxiliary components). It offers a cost-effective alternative to high-strength steel and specialty alloys, providing comparable strength with significant weight savings. This combination of performance and value makes 5182 a preferred choice for large-scale production runs.
6. Eco-Friendly & Recyclable
5182 aluminum is 100% recyclable with minimal loss of quality, aligning with global sustainability goals. The production process of our 5182 coils adheres to strict environmental standards, reducing carbon emissions and energy consumption. For businesses focused on eco-friendly practices, this alloy is a responsible choice that supports circular economy initiatives.
Technical Specifications of 5182 Aluminum Coils
Our 5182 aluminum coils are available in various tempers and dimensions to meet the rigorous requirements of high-performance applications, all complying with international standards. Below are the detailed technical parameters:
1. Alloy Composition
Aluminum (Al): ≥ 93.5%
Magnesium (Mg): 4.0-5.0%
Manganese (Mn): 0.20-0.60%
Silicon (Si): ≤ 0.25%
Iron (Fe): ≤ 0.35%
Copper (Cu): ≤ 0.10%
Zinc (Zn): ≤ 0.25%
Titanium (Ti): ≤ 0.10%
Other impurities: ≤ 0.15% (total)
2. Mechanical Properties (Key Tempers)
O Temper (Fully Annealed): Tensile strength: 190-240 MPa; Yield strength: 70-110 MPa; Elongation (50mm): ≥ 25%
H111 Temper (Stable Annealed): Tensile strength: 200-250 MPa; Yield strength: 80-120 MPa; Elongation (50mm): ≥ 22%
H112 Temper (As-Fabricated): Tensile strength: 210-260 MPa; Yield strength: 90-130 MPa; Elongation (50mm): ≥ 20%
H32 Temper (Stabilized Half Hard): Tensile strength: 280-330 MPa; Yield strength: 200-260 MPa; Elongation (50mm): ≥ 15%
H34 Temper (Stabilized Three-Quarter Hard): Tensile strength: 330-380 MPa; Yield strength: 260-320 MPa; Elongation (50mm): ≥ 10%
Hardness (HV): 55-110 (varies by temper)
Thermal conductivity: 125 W/(m·K)
Electrical conductivity: 32% IACS
Density: 2.66 g/cm³
3. Surface & Processing Specifications
Surface finish: Mill finish (smooth, uniform); Custom finishes (brushed, polished, anodized, powder-coated) available upon request
Surface roughness (Ra): ≤ 0.8 μm (mill finish)
Formability: Excellent for deep drawing, stamping, bending, rolling, and spinning
Weldability: Weldable via MIG, TIG, resistance welding; Recommended filler metal: ER5356
4. Dimensional Specifications
Thickness range: 0.20 mm - 8.0 mm (common specs: 0.20-0.5 mm for electronics/components, 0.5-3.0 mm for automotive/marine, 3.0-8.0 mm for industrial/structural parts)
Thickness tolerance: ±0.02 mm (for 0.20-1.0 mm), ±0.05 mm (for 1.0-3.0 mm), ±0.1 mm (for 3.0-8.0 mm)
Width range: 800 mm - 2500 mm (custom widths available to minimize slitting waste; precise slitting ensures clean, burr-free edges)
Coil weight: 300 kg - 5000 kg (custom weights for easy handling; tight winding prevents deformation during storage/transport)
Inner diameter: 508 mm or 610 mm (standard sizes for industrial processing equipment)
5. Standards & Certifications
Compliance Standards: ASTM B209 (USA), EN 485-2 (Europe), GB/T 3880 (China), ISO 6361 (Automotive Applications)
Certifications: ISO 9001 (Quality Management System), ISO 14001 (Environmental Management System); Detailed Material Test Reports (MTR) available for each coil, including alloy composition, mechanical properties, and surface quality inspection results
Key Applications of 5182 Aluminum Coils
The high strength, superior corrosion resistance, and excellent formability of 5182 aluminum coils make them suitable for a wide range of demanding applications across multiple industries. Below are the most common use cases, aligned with the product's unique advantages:
1. Automotive Industry
Automotive body panels (door panels, hoods, fenders), fuel tank components, wheel covers, and structural parts (reinforcement beams). The high strength and impact resistance ensure passenger safety, while the lightweight property reduces vehicle weight and improves fuel efficiency. The corrosion resistance makes it suitable for underbody components exposed to road salt and moisture.
2. Marine & Offshore Applications
Marine hull panels, decking, bulkheads, and offshore platform components. The superior seawater corrosion resistance of 5182 ensures durability in harsh marine environments, while the high strength can withstand wave impact and structural loads. It is also used for marine equipment housings and decorative marine components.
3. Aerospace Auxiliary Components
Aerospace auxiliary components (cargo hold panels, interior trim, fuel line covers). The lightweight and high strength properties meet the strict weight and performance requirements of the aerospace industry, while the corrosion resistance ensures reliability in high-altitude and humid environments.
4. Industrial & Manufacturing
Industrial ductwork, chemical storage tank liners, heat exchanger components, and heavy-duty equipment parts. The corrosion resistance makes it suitable for industrial environments with mild chemicals or humidity, while the high strength ensures structural stability for heavy-load-bearing components. It is also used for tooling and die components due to its excellent formability.
5. Packaging & Consumer Goods
High-strength packaging (cans for corrosive products, heavy-duty foil containers), and consumer goods (luggage frames, sports equipment parts). The high strength ensures packaging durability during transportation, while the corrosion resistance protects packaged goods from contamination. The lightweight property is ideal for portable consumer goods.
6. Construction & Architectural
Architectural cladding for high-rise buildings, structural components for lightweight buildings, and decorative panels for harsh environments (coastal areas, industrial zones). The high strength provides structural stability, while the corrosion resistance ensures long-term aesthetic and performance integrity with minimal maintenance.
Processing & Fabrication Tips for 5182 Aluminum Coils
5182 aluminum alloy coils offer excellent processability, but proper techniques vary by temper and application. Below are practical tips tailored to common fabrication scenarios to help you maximize performance and avoid material damage:
1. Coil Handling & Storage
Handle coils with soft slings or rubber-coated hooks to avoid surface scratches. For thin gauges (≤0.5mm) and softer tempers (O, H111), use extra care to prevent deformation. For harder tempers (H32, H34), avoid dropping or impacting the coils, as they are more prone to edge damage.
Store coils in a clean, dry, temperature-controlled warehouse (15-25°C, relative humidity ≤ 60%) away from moisture, dust, and corrosive substances. Wrap coils in moisture-resistant film for long-term storage to prevent oxidation. Keep coils vertically on dedicated racks to avoid warping, and avoid stacking to prevent surface abrasion.
2. Cutting & Slitting
Use precision cutting equipment with sharp carbide blades to ensure clean, burr-free edges. Dull blades can cause rough edges or tearing, especially for harder tempers (H32, H34). For slitting, adjust the equipment to apply uniform pressure to avoid distorting the material. Keep the cutting/slitting equipment clean and free of debris to prevent surface scratches.
After cutting, deburr edges gently with a soft abrasive pad to remove any sharp edges. For thicker gauges (≥3.0mm), use a deburring tool to ensure smooth edges, which is critical for welding and assembly.
3. Forming & Bending
Adjust the bend radius based on temper: O temper (1x material thickness), H111/H112 temper (2x), H32 temper (3x), H34 temper (4x). Harder tempers require larger bend radii to avoid cracking. Use dies with smooth surfaces to prevent scratches during forming. For complex forming processes (deep drawing, stamping), use O or H111 tempers for better ductility.
Apply uniform pressure during forming to avoid localized thinning or tearing. If additional forming is needed for harder tempers, anneal the material at 345-400°C for 1-2 hours (followed by air cooling) to restore ductility. Avoid overworking the material, as this can increase hardness and reduce formability.
4. Welding & Joining
Use MIG or TIG welding with ER5356 filler metal to ensure strong, corrosion-resistant joints. Keep welding heat low to avoid excessive grain growth, which can reduce ductility. Clean the welding area thoroughly before welding to remove oil, dirt, or oxide layers-this ensures better weld penetration and prevents porosity.
For mechanical joining, use aluminum or stainless steel fasteners to avoid galvanic corrosion. Pre-drill holes with sharp bits at moderate speed to prevent material tearing (especially for harder tempers). Use washers under fasteners to distribute pressure and avoid surface damage. For high-strength applications, consider adhesive bonding in addition to mechanical fasteners for enhanced structural integrity.
5. Post-Fabrication Care
Clean fabricated parts with a mild detergent and soft cloth to remove dust and debris. Avoid harsh abrasives or chemical cleaners (e.g., bleach, ammonia), as these can damage the material surface.
If surface finishes (anodizing, painting) are required, pre-treat the surface with chemical etching or sandblasting to ensure good adhesion. 5182 aluminum responds well to sulfuric acid anodizing, producing a uniform, corrosion-resistant oxide layer. For powder coating, ensure the surface is clean and dry to achieve a smooth, durable finish.
Our Quality Assurance & Customization Services
We understand that demanding applications require consistent quality and tailored solutions. That's why our 5182 aluminum alloy coils are backed by strict quality control processes and personalized customization services to meet your unique needs:
Strict Quality Control: Every coil undergoes multi-stage inspections, including raw material alloy composition testing (optical emission spectrometry), mechanical property testing (tensile testing), surface quality checks (automated vision systems), and corrosion resistance testing (salt spray testing). We reject any coil that fails to meet our standards for alloy uniformity, surface quality, or mechanical performance.
Full Traceability: Each coil is assigned a unique batch number, allowing full traceability from raw material to finished product. We provide detailed MTR reports with every shipment, so you can verify quality and specifications with confidence.
Tailored Customization: We offer custom tempers (O, H111, H112, H32, H34), dimensional specifications (thickness: 0.20-8.0mm, width: 800-2500mm), and surface finishes (brushed, polished, anodized, powder-coated). Our engineering team can recommend the ideal temper and specifications based on your application's environment, performance requirements, and fabrication processes.
Technical & Logistics Support: Our team of aluminum alloy experts provides personalized guidance on processing, forming, welding, and post-fabrication care for 5182 aluminum alloy coils. We offer free technical samples for testing, so you can verify performance before placing large orders. We use specialized packaging (protective film, anti-scratch liners, wooden crates) to ensure coils arrive in perfect condition and offer global shipping with on-time delivery guarantees.
