5049 Aluminum alloy,Aluminum 5049 alloy,E FORU

### **Introduction to 5049 Aluminum Alloy** **5049 Aluminum Alloy** is a non-heat-treatable aluminum-magnesium alloy known for its **excellent compromise between strength, formability, and corrosion resistance**. As part of the 5xxx series, it is strengthened by magnesium (Mg) in solid solution and is available in various strain-hardened (H) tempers. It is widely used as a body panel material in the automotive industry and for other applications requiring a durable, formable, and weldable material. --- ### **1. Chemical Composition (Weight %)** The typical chemical composition of 5049 Aluminum Alloy is balanced to achieve its key properties. | Element | Content (%) | Role in the Alloy | | :--- | :--- | :--- | | **Aluminum (Al)** | Balance | Base Element | | **Magnesium (Mg)** | 1.5 - 2.5 | Primary strengthening element; enhances strength through solid solution hardening. | | **Manganese (Mn)** | 0.05 - 0.45 | Improves strength and work hardening response; refines grain structure. | | **Chromium (Cr)** | ≤ 0.20 | Can be added to control grain structure and improve toughness. | | **Copper (Cu)** | ≤ 0.10 | Impurity; kept very low to maintain excellent corrosion resistance. | | **Iron (Fe)** | ≤ 0.40 | Impurity; controlled to prevent negative impact on formability and surface finish. | | **Silicon (Si)** | ≤ 0.30 | Impurity; controlled to prevent the formation of brittle phases. | | **Zinc (Zn)** | ≤ 0.20 | Impurity; kept low. | | **Others (each)** | ≤ 0.05 | - | | **Others (total)** | ≤ 0.15 | - | --- ### **2. Physical Properties** The following are typical physical properties for 5049 Aluminum Alloy. | Property | Value / Description | | :--- | :--- | | **Density** | ≈ 2.69 g/cm³ | | **Melting Range** | ≈ 630 - 655 °C | | **Electrical Conductivity** | ≈ 37 - 42 % IACS (International Annealed Copper Standard) | | **Thermal Conductivity** | ≈ 130 - 140 W/m·K | | **Coefficient of Thermal Expansion** | ≈ 23.6 x 10⁻⁶ /K (at 20-100°C) | | **Modulus of Elasticity** | ≈ 70 GPa | --- ### **3. Mechanical Properties (Typical for Sheet/Strip)** Mechanical properties are highly dependent on the temper (condition). | Temper | Tensile Strength (MPa) | Yield Strength (0.2% Offset, MPa) | Elongation (%) | | :--- | :--- | :--- | :--- | | **O (Annealed)** | 190 - 240 | ≥ 80 | ≥ 20 | | **H22 / H24** | 240 - 290 | 190 - 240 | 10 - 16 | | **H26 / H28** | 270 - 320 | 240 - 290 | 6 - 10 | *Note: Values are approximate and can vary based on the specific manufacturing process and final gauge.* --- ### **4. Key Characteristics & Advantages** * **Good Strength & Formability Balance:** Offers a favorable combination of medium strength and high ductility, making it ideal for complex stamping and forming operations, such as those used for automotive body panels. * **Excellent Corrosion Resistance:** Demonstrates very good resistance to atmospheric corrosion, making it suitable for unpainted or painted exterior applications. * **Good Weldability:** Can be readily welded using common techniques such as MIG and TIG welding without a significant loss of properties in the heat-affected zone compared to higher-strength alloys. * **Brazeability:** Suitable for brazing operations. * **Good Surface Quality:** Capable of achieving a high-quality surface finish, which is essential for visible parts and subsequent painting. --- ### **5. Product Applications** 5049 Aluminum Alloy is a versatile material used in several key industries: * **Automotive Industry (Primary Application):** * Inner and outer body panels (doors, hoods, fenders). * Structural components and brackets. * **Transportation:** * Body panels for buses, trains, and truck trailers. * **General Engineering & Sheet Metal Work:** * Cabinets, enclosures, and various pressed and fabricated parts. * **Marine Applications:** * Non-critical marine components and superstructures. --- ### **6. International Standards** 5049 Aluminum Alloy is recognized under several major international standardization systems. | Standard Body | Alloy Designation | Common Product Standards | | :--- | :--- | :--- | | **ISO** | **AlMg2** | ISO 209 | | **EN (European Norm)** | **EN AW-5049** | EN 573-3, EN 485 (for sheet) | | **AA (Aluminum Association)** | **5049** | AA Teal Sheets / Registration Record | | **JIS (Japanese Standard)** | **A5049** | JIS H 4000 |

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 1798 gallon liquid totes Special package is available on request.