3203 Aluminum alloy,Aluminum 3203 alloy,E FORU

### **Product Introduction: Aluminum 3203 Alloy** **Overview** Aluminum 3203 Alloy is a common, non-heat-treatable aluminum-manganese alloy known for its excellent formability, good corrosion resistance, and moderate strength. It serves as a general-purpose alloy that offers a reliable and cost-effective solution for various applications in the building, construction, and general sheet metal industries. Often supplied in strain-hardened tempers (e.g., H14, H16), it provides a favorable balance of strength and workability, making it suitable for bending, forming, and drawing operations. --- ### **1. Chemical Composition (Typical Weight %)** The composition of 3203 alloy is simple, centered on aluminum with manganese as the primary alloying element. | Element | Content (%) | | :--- | :--- | | **Aluminum (Al)** | Balance | | **Manganese (Mn)** | 1.0 - 1.5 | | **Iron (Fe)** | ≤ 0.7 | | **Copper (Cu)** | ≤ 0.10 | | **Zinc (Zn)** | ≤ 0.10 | | **Silicon (Si)** | ≤ 0.6 | | **Magnesium (Mg)** | ≤ 0.10 | | **Others (Each)** | ≤ 0.05 | | **Others (Total)** | ≤ 0.15 | *The low levels of copper and magnesium contribute to its good corrosion resistance, while manganese provides solid solution strengthening.* --- ### **2. Physical Properties** 3203 Aluminum exhibits physical properties typical for its alloy series. | Property | Value / Description | | :--- | :--- | | **Density** | 2.73 g/cm³ (0.0986 lb/in³) | | **Melting Range** | ~ 645 - 655 °C (~ 1190 - 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 H14 Temper)** The H14 temper (work hardened and partially annealed) is a common condition for this alloy. | Property | Value (H14 Temper - Typical) | | :--- | :--- | | **Tensile Strength** | 150 - 185 MPa (22 - 27 ksi) | | **Yield Strength (0.2% Offset)** | 140 - 170 MPa (20 - 25 ksi) | | **Elongation (in 50mm)** | 3% - 8% | *Note: In the fully annealed (O) condition, the tensile strength would be lower (~110-145 MPa) and elongation significantly higher (>15%).* --- ### **4. International Standards** 3203 aluminum alloy is recognized by several major international standards organizations. | Standard Body | Alloy Designation | | :--- | :--- | | **Aluminum Association (AA)** | AA 3203 | | **UNS Number** | UNS A93203 | | **European Standard (EN)** | **EN AW-3203** (Chemical Symbol: AlMn1) | | **ISO** | AlMn1 (ISO 209) | | **China (GB/T)** | 3A21 (GB/T 3190) | *Please note: The direct equivalent in the Chinese GB standard is often considered to be 3A21, which has a very similar composition and application.* --- ### **5. Product Applications** The combination of formability, corrosion resistance, and strength makes 3203 suitable for a range of applications. * **Building and Construction:** * Roofing and siding sheets * Wall panels and cladding * Gutters and downpipes * **General Sheet Metal Work:** * Appliance cabinets and trim * Fan blades and housings * Light reflectors * Nameplates and tags * **Containers and Packaging:** * Shipping containers * Foil stock for thicker gauges * **Transportation:** * Non-critical interior panels for vehicles and trailers --- ### **6. Key Characteristics & Advantages** * **Good Corrosion Resistance:** Exhibits very good resistance to atmospheric corrosion, making it suitable for outdoor architectural applications. * **Excellent Formability:** Can be easily bent, stamped, and formed, especially in softer tempers (O and H12/H22). * **Moderate Strength:** Provides higher strength than the 1xxx series pure aluminum while maintaining good workability. * **Good Weldability:** Can be readily welded using common methods such as MIG and TIG. * **Brazeable:** Suitable for brazing operations. * **Cost-Effective:** Offers a practical balance of performance and cost for many commercial and industrial uses. **Disclaimer:** The information provided herein is for reference purposes only. Mechanical and physical properties can vary based on manufacturing processes, specific product form (sheet, coil, etc.), and temper. 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 1718 gallon liquid totes Special package is available on request.