3105-O Aluminum alloy,Aluminum 3105-O alloy,E FORU

### **Product Introduction: 3105-O Aluminum Alloy** **Overview** 3105-O Aluminum Alloy is a widely used non-heat-treatable aluminum-manganese alloy known for its excellent formability, good corrosion resistance, and moderate strength. The "O" temper designation indicates that it is in the annealed state, which is the softest and most ductile condition. This makes it ideal for applications requiring complex forming and deep drawing operations. It offers a excellent balance of workability, surface quality, and cost-effectiveness, serving as a reliable choice for various architectural, building, and general industrial applications. --- ### **1. Chemical Composition (Typical Weight %)** The composition of 3105 alloy is designed to provide a good combination of strength and formability. Key elements include: | Element | Content (%) | | :--- | :--- | | **Aluminum (Al)** | Balance | | **Manganese (Mn)** | 0.50 - 1.0 | | **Magnesium (Mg)** | 0.20 - 0.8 | | **Iron (Fe)** | ≤ 0.7 | | **Copper (Cu)** | ≤ 0.30 | | **Zinc (Zn)** | ≤ 0.40 | | **Silicon (Si)** | ≤ 0.6 | | **Others (Each)** | ≤ 0.05 | | **Others (Total)** | ≤ 0.15 | *Note: The "O" temper is achieved through a thermal annealing process, not by altering the fundamental chemical composition.* --- ### **2. Physical Properties** 3105-O Aluminum exhibits a set of physical properties that make it suitable for many forming and fabrication processes. | Property | Value / Description | | :--- | :--- | | **Density** | 2.73 g/cm³ (0.0986 lb/in³) | | **Melting Range** | ~ 635 - 655 °C (~ 1175 - 1210 °F) | | **Electrical Conductivity** | ~ 40-45% IACS (International Annealed Copper Standard) | | **Thermal Conductivity** | ~ 170 - 190 W/m·K | | **Coefficient of Thermal Expansion** | ~ 23.4 x 10⁻⁶/°C (at 20-100°C) | | **Modulus of Elasticity** | ~ 70 GPa (10,000 ksi) | --- ### **3. Mechanical Properties (Typical for O Temper)** The annealed condition provides low strength but maximum ductility. | Property | Value | | :--- | :--- | | **Tensile Strength** | 115 - 150 MPa (17 - 22 ksi) | | **Yield Strength (0.2% Offset)** | 55 - 85 MPa (8 - 12 ksi) | | **Elongation (in 50mm)** | 15% - 25% | | **Hardness (Brinell)** | ~ 35 HB | --- ### **4. International Standards** 3105 aluminum alloy is recognized and specified by several major international standards organizations. | Standard Body | Alloy Designation | | :--- | :--- | | **Aluminum Association (AA)** | AA 3105 | | **UNS Number** | UNS A93105 | | **European Standard (EN)** | **EN AW-3105** (Formerly AlMn1Mg0.5) | | **ISO** | AlMn1Mg0.5 (ISO 209) | | **China (GB/T)** | 3105 (GB/T 3190) | --- ### **5. Product Applications** The superior formability and good surface finish of 3105-O alloy make it a prime candidate for a diverse range of applications, including: * **Building and Construction:** * Roofing and siding sheets * Wall panels * Downspouts and gutters * Mobile home skirting * **General Sheet Metal Work:** * Appliance trim and panels * Fan blades and housings * Light reflectors * Nameplates and tags * **Containers and Packaging:** * Can lids and ends (where high formability is required) * Foil stock for thicker gauges * **Transportation:** * Non-structural interior trim panels for vehicles and trailers --- ### **6. Key Characteristics & Advantages** * **Excellent Formability:** The "O" temper allows for deep drawing, severe bending, and other complex forming operations without cracking. * **Good Corrosion Resistance:** Exhibits very good resistance to atmospheric corrosion, making it suitable for outdoor applications, often used with protective coatings or paint systems. * **High Ductility and Softness:** Ideal for applications where the material must be easily shaped. * **Good Weldability:** Can be readily welded using common methods like MIG and TIG. * **Attractive Surface Finish:** Provides a clean, uniform surface that is ideal for painting or anodizing. * **Cost-Effective:** Offers a favorable performance-to-cost ratio for many commercial applications. **Disclaimer:** The information provided herein is for reference purposes only. Mechanical and physical properties can vary based on manufacturing processes and specific product form (sheet, coil, etc.). For critical applications, always consult the manufacturer's data sheets and conduct appropriate testing.

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 1714 gallon liquid totes Special package is available on request.