3021 Aluminum alloy,Aluminum 3021 alloy,E FORU

### **Aluminum 3021 Alloy Product Introduction** **Aluminum 3021** is a medium-strength aluminum-manganese alloy specifically designed to offer enhanced mechanical properties while maintaining excellent formability and corrosion resistance. This alloy is particularly suitable for applications requiring good strength-to-weight ratio and reliable performance in various industrial sectors. --- #### **1. Chemical Composition** | Element | Content (%) | | :--- | :--- | | **Manganese (Mn)** | 0.9 - 1.4 | | **Magnesium (Mg)** | 0.5 - 0.9 | | **Iron (Fe)** | 0.5 max | | **Silicon (Si)** | 0.4 max | | **Copper (Cu)** | 0.20 max | | **Zinc (Zn)** | 0.20 max | | **Other Elements** | each 0.05 max, total 0.15 max | | **Aluminum (Al)** | Balance | *Alloy Characteristics:* - **Manganese** provides solid solution strengthening - **Magnesium** enhances strength and corrosion resistance - **Optimized composition** for balanced performance - **Controlled impurities** ensure consistent quality --- #### **2. Physical Properties** | Property | Value / Description | | :--- | :--- | | **Density** | 2.73 g/cm³ (0.098 lb/in³) | | **Melting Range** | 640 - 655 °C (1184 - 1211 °F) | | **Modulus of Elasticity** | 69 GPa (10,000 ksi) | | **Thermal Conductivity** | 142 W/m·K (98 BTU·in/hr·ft²·°F) | | **Electrical Conductivity** | 37% IACS | | **Coefficient of Thermal Expansion** | 23.6 × 10⁻⁶/°C (20-100°C) | | **Specific Heat Capacity** | 900 J/kg·K | --- #### **3. Mechanical Properties** *Typical properties for H14 temper:* - **Tensile Ultimate Strength:** 165 - 205 MPa (24 - 30 ksi) - **Tensile Yield Strength (0.2% Offset):** 135 - 175 MPa (20 - 25 ksi) - **Elongation:** 4 - 8% (in 2 inches) - **Shear Strength:** 108 MPa (16 ksi) - **Brinell Hardness:** 42 - 52 HB *Typical properties for H16 temper:* - **Tensile Ultimate Strength:** 185 - 225 MPa (27 - 33 ksi) - **Tensile Yield Strength:** 155 - 195 MPa (22 - 28 ksi) - **Elongation:** 3 - 6% --- #### **4. International Standards** * **European Standards (EN):** * **EN 573-3** - Chemical composition and form of products * **EN 485-2** - Mechanical properties * **ASTM:** * **ASTM B209** - Aluminum and Aluminum-Alloy Sheet and Plate * **ISO:** * **ISO 6361-2** - Wrought Aluminum and Aluminum Alloy Sheets, Strips and Plates * **National Standards:** * **GB/T 3190** (China) * **JIS H 4000** (Japan) --- #### **5. Product Applications** 3021 alloy is used in various demanding applications: * **Transportation Industry:** - Vehicle body panels - Truck and trailer components - Interior structural parts - Container panels * **Building & Construction:** - Structural roofing systems - Wall cladding panels - Architectural components - Industrial flooring * **Marine Applications:** - Boat components - Marine hardware - Dock equipment - Coastal structures * **Industrial Equipment:** - Machinery components - Equipment enclosures - Storage systems - Material handling equipment --- #### **6. Key Advantages** * **Enhanced Strength Properties:** Better mechanical properties than standard 3000 series alloys * **Good Formability:** Suitable for various forming operations * **Excellent Corrosion Resistance:** Superior performance in harsh environments * **Good Weldability:** Compatible with standard welding methods * **Thermal Stability:** Maintains properties at elevated temperatures * **Cost-Effective:** Economical solution for demanding applications * **Recyclable:** Environmentally friendly material --- #### **7. Fabrication Characteristics** * **Welding:** Good weldability using GMAW, GTAW, and resistance welding * **Forming:** Suitable for bending, roll forming, and moderate drawing * **Machining:** Fair machinability with proper tool selection * **Strain Hardening:** Good response to cold working processes * **Surface Treatment:** Good for painting and chemical conversion coatings * **Joining:** Suitable for mechanical fastening techniques --- #### **8. Corrosion Performance** * **Atmospheric Corrosion:** Excellent * **Marine Environment:** Good to Very Good * **Stress Corrosion Cracking:** Good Resistance * **Pitting Resistance:** Good * **Industrial Atmospheres:** Good Resistance --- #### **9. Special Features** * **Enhanced Manganese-Magnesium Content** for improved strength * **Better Mechanical Properties** compared to standard 3000 series alloys * **Good Structural Efficiency** for weight-sensitive applications * **Excellent Surface Quality** for finished products * **Good Fatigue Resistance** for dynamic applications --- #### **10. Quality Assurance** * Strict chemical composition control * Consistent mechanical properties * Comprehensive quality testing * Good dimensional stability * Full traceability and certification **Conclusion** Aluminum 3021 alloy represents an enhanced version in the 3000 series aluminum-manganese alloys, offering improved mechanical properties through optimized chemistry while maintaining the excellent characteristics of aluminum-manganese alloys. Its balanced composition provides better strength characteristics compared to standard 3000 series alloys, making it suitable for more demanding applications in transportation, construction, and marine industries. The alloy maintains good fabrication characteristics and excellent corrosion resistance, ensuring reliable performance in various environmental conditions. 3021 alloy delivers a cost-effective solution for applications requiring enhanced strength and durability without compromising the inherent advantages of the 3000 series aluminum alloys, providing manufacturers with a reliable material choice for demanding applications.

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 1692 gallon liquid totes Special package is available on request.