5249 Aluminum alloy,Aluminum 5249 alloy,E FORU

### **5249 Aluminum Alloy Technical Datasheet** **Material Overview** 5249 Aluminum Alloy is a high-strength, non-heat-treatable aluminum-magnesium alloy from the 5xxx series, specifically developed for applications requiring superior mechanical properties and excellent corrosion resistance. This alloy is characterized by its enhanced strength, good weldability, and outstanding performance in marine and aerospace applications, making it suitable for highly stressed structural components. --- ### **1. Chemical Composition (Weight %)** | Element | Composition Range | |---------|-------------------| | Aluminum (Al) | Balance | | Magnesium (Mg) | 5.5 - 6.5 | | Manganese (Mn) | 0.10 - 0.50 | | Zirconium (Zr) | 0.10 - 0.20 | | Silicon (Si) | ≤ 0.25 | | Iron (Fe) | ≤ 0.30 | | Chromium (Cr) | 0.05 - 0.20 | | Copper (Cu) | ≤ 0.05 | | Zinc (Zn) | ≤ 0.15 | | Titanium (Ti) | ≤ 0.10 | | Other Elements (Each) | ≤ 0.05 | | Other Elements (Total) | ≤ 0.15 | --- ### **2. Physical Properties** | Property | Value | |----------|-------| | Density | 2.66 g/cm³ | | Melting Range | 570 - 640 °C | | Electrical Conductivity | 28-32% IACS | | Thermal Conductivity | 115 - 125 W/m·K | | Coefficient of Thermal Expansion (20-100°C) | 24.0 × 10⁻⁶/°C | | Modulus of Elasticity | 70 GPa | | Specific Heat Capacity | 900 J/kg·K | --- ### **3. Mechanical Properties** | Temper | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | |--------|------------------------|----------------------|----------------| | O | 290 - 340 | 130 - 180 | 18 - 22 | | H32 | 350 - 400 | 270 - 320 | 12 - 16 | | H34 | 370 - 420 | 290 - 340 | 10 - 14 | | H36 | 390 - 440 | 310 - 360 | 8 - 12 | --- ### **4. Technical Applications** **Primary Application Sectors:** - **Aerospace Industry** - Aircraft structural components - Spacecraft fuel tanks - Missile components - Satellite structures - **Marine & Offshore** - High-speed vessel hulls - Submarine components - Offshore platform structures - Marine pressure vessels - **Defense Applications** - Armored vehicle components - Military bridge systems - Defense equipment structures - Naval architecture - **Specialty Transportation** - High-speed train components - Racing vehicle structures - Luxury automotive parts - Special purpose vehicles --- ### **5. International Standards Compliance** | Standard Organization | Designation | |----------------------|-------------| | Aluminum Association | AA 5249 | | ASTM International | ASTM B209/B210 | | European Standards | EN AW-5249 | | Aerospace Standards | AMS 4354 | | International Standards | ISO 6361-2 | --- ### **6. Material Characteristics** **Key Advantages:** - High strength-to-weight ratio - Excellent corrosion resistance, particularly in marine environments - Good stress corrosion cracking resistance - Superior fatigue performance - Excellent weldability with minimal strength loss - Good cryogenic properties **Special Features:** - **Enhanced Strength** - Higher magnesium content for improved strength - Zirconium addition for grain refinement - Good strain hardening capability - Maintains strength at elevated temperatures - **Corrosion Performance** - Outstanding seawater corrosion resistance - Excellent resistance to stress corrosion cracking - Good performance in acidic environments - Suitable for splash zone applications --- ### **7. Processing Characteristics** **Manufacturing Considerations:** - **Welding Technology** - Excellent weldability using MIG and TIG methods - Recommended filler: 5356, 5183 - Minimal strength loss in heat-affected zone - Good weld metal mechanical properties - **Forming Operations** - Good cold working capability - Suitable for moderate forming operations - Predictable springback characteristics - Best formability in annealed condition - **Heat Treatment** - Non-heat-treatable alloy - Properties developed through strain hardening - Can be annealed at 345°C for stress relief - Stable properties over time --- ### **8. Quality Assurance** **Testing & Certification:** - Comprehensive mechanical testing - Chemical composition verification - Corrosion resistance testing per ASTM standards - Fracture toughness evaluation - Fatigue testing capability - Mill test certificates per EN 10204 3.2 --- **Technical Note:** 5249 Aluminum Alloy represents a premium high-strength aluminum-magnesium alloy designed for demanding applications in aerospace, marine, and defense industries. Its optimized chemical composition, particularly the zirconium addition for grain refinement, provides enhanced mechanical properties while maintaining excellent corrosion resistance. The alloy is particularly suitable for welded structures and components operating in aggressive environments where reliability and performance are critical requirements.

Packing of Standard Packing: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 1865 gallon liquid totes Special package is available on request.