5040 Aluminum alloy,Aluminum 5040 alloy,E FORU

### **Introduction to 5040 Aluminum Alloy** **5040 Aluminum Alloy** is a non-heat-treatable aluminum-magnesium alloy known for its excellent **anodizing characteristics** and good combination of strength, formability, and corrosion resistance. It is part of the 5xxx series, which are alloys primarily alloyed with magnesium. A key feature of 5040 is its ability to produce a bright, reflective, and uniform surface after anodizing, making it a preferred choice for decorative and architectural applications. --- ### **1. Chemical Composition (Weight %)** The typical chemical composition of 5040 Aluminum Alloy as per international standards is outlined below. | Element | Content (%) | Role in the Alloy | | :--- | :--- | :--- | | **Aluminum (Al)** | Balance | Base Element | | **Magnesium (Mg)** | 1.0 - 2.0 | Provides solid solution strengthening, improves strength and work-hardening ability. | | **Manganese (Mn)** | 0.5 - 1.1 | Enhances strength and improves work hardening response. Helps refine grain structure. | | **Chromium (Cr)** | ≤ 0.10 | Impurity; controlled to ensure a consistent anodized finish. | | **Copper (Cu)** | ≤ 0.05 | **Very low.** This is critical for achieving a bright anodized finish, as Cu can cause discoloration. | | **Iron (Fe)** | ≤ 0.05 | **Very low.** Controlled to prevent the formation of dark intermetallic particles that can cause streaks or a dull appearance after anodizing. | | **Silicon (Si)** | ≤ 0.05 | **Very low.** Like Fe, it is minimized to ensure a brilliant, defect-free anodized surface. | | **Zinc (Zn)** | ≤ 0.10 | Impurity; kept low. | | **Others (each)** | ≤ 0.05 | - | | **Others (total)** | ≤ 0.15 | - | --- ### **2. Physical Properties** The following are typical physical properties for 5040 Aluminum Alloy. | Property | Value / Description | | :--- | :--- | | **Density** | ≈ 2.72 g/cm³ | | **Melting Range** | ≈ 645 - 655 °C | | **Electrical Conductivity** | ≈ 40-45 % IACS (International Annealed Copper Standard) | | **Thermal Conductivity** | ≈ 140 - 150 W/m·K | | **Coefficient of Thermal Expansion** | ≈ 23.5 x 10⁻⁶ /K (at 20-100°C) | | **Modulus of Elasticity** | ≈ 70 GPa | --- ### **3. Mechanical Properties (Typical for Sheet/Strip)** Mechanical properties vary with temper (condition). | Temper | Tensile Strength (MPa) | Yield Strength (0.2% Offset, MPa) | Elongation (%) | | :--- | :--- | :--- | :--- | | **O (Annealed)** | 160 - 200 | ≥ 70 | ≥ 20 | | **H24 / H26** | 220 - 260 | 180 - 220 | 8 - 14 | | **H18 / H19** | 260 - 300 | 240 - 280 | 4 - 7 | *Note: Values are approximate and can vary based on the specific manufacturing process and final gauge.* --- ### **4. Key Characteristics & Advantages** * **Superb Anodizing Quality:** The primary advantage of 5040 is its ability to be anodized to a highly reflective, bright, and uniform surface. The very low levels of Fe and Si are crucial for this. * **Good Corrosion Resistance:** Exhibits very good resistance to atmospheric corrosion, similar to other Al-Mg alloys. * **Excellent Formability:** Can be easily bent, stamped, and drawn, especially in the annealed (O) temper. * **Good Strength-to-Weight Ratio:** Offers a moderate strength level suitable for many structural and decorative applications. * **High Surface Finish:** The alloy is capable of achieving a mirror-like finish prior to anodizing, which is preserved and enhanced by the anodizing process. --- ### **5. Product Applications** 5040 Aluminum Alloy is predominantly used in applications where aesthetics and surface finish are paramount: * **Architectural & Decorative Applications:** * Bright trim for automotive and consumer electronics. * Decorative nameplates and plaques. * Interior and exterior architectural panels requiring a high-gloss, reflective finish. * Lamp reflectors and light fixtures. * **Consumer Electronics:** * Decorative bezels, housings, and components for high-end audio/video equipment. * **Reflectors:** * Used for both aesthetic and functional reflectors where high reflectivity is required. --- ### **6. International Standards** 5040 Aluminum Alloy is recognized under several major international standardization systems. | Standard Body | Alloy Designation | Common Product Standards | | :--- | :--- | :--- | | **ISO** | **AlMg1** | ISO 209 | | **EN (European Norm)** | **EN AW-5040** | EN 573-3, EN 485 (for sheet) | | **AA (Aluminum Association)** | **5040** | AA Teal Sheets / Registration Record | | **JIS (Japanese Standard)** | **A5040** | 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 1794 gallon liquid totes Special package is available on request.