3003-O Aluminum alloy,Aluminum 3003-O alloy,E FORU

### **Aluminum 3003-O Alloy Product Introduction** **Aluminum 3003-O** is the annealed (soft) temper of the widely used aluminum-manganese alloy 3003, offering maximum formability and ductility for severe forming operations. The "O" temper designation indicates the material has been fully annealed to achieve the softest possible condition, making it ideal for applications requiring deep drawing, spinning, and other demanding fabrication processes while maintaining good corrosion resistance and thermal conductivity. --- #### **1. Chemical Composition** | Element | Content (%) | | :--- | :--- | | **Manganese (Mn)** | 1.0 - 1.5 | | **Copper (Cu)** | 0.05 - 0.20 | | **Iron (Fe)** | 0.7 max | | **Silicon (Si)** | 0.6 max | | **Zinc (Zn)** | 0.10 max | | **Other Elements** | each 0.05 max, total 0.15 max | | **Aluminum (Al)** | Balance | *Material Characteristics:* - **Manganese** as primary alloying element for basic strengthening - Low copper content ensures excellent corrosion resistance - Balanced chemistry optimized for maximum formability in annealed condition --- #### **2. Physical Properties** | Property | Value / Description | | :--- | :--- | | **Density** | 2.73 g/cm³ (0.098 lb/in³) | | **Melting Range** | 643 - 654 °C (1190 - 1210 °F) | | **Modulus of Elasticity** | 69 GPa (10,000 ksi) | | **Thermal Conductivity** | 155 W/m·K (107 BTU·in/hr·ft²·°F) | | **Electrical Conductivity** | 42% IACS | | **Coefficient of Thermal Expansion** | 23.2 × 10⁻⁶/°C (20-100°C) | | **Specific Heat Capacity** | 900 J/kg·K | --- #### **3. Mechanical Properties** The O temper provides fully annealed characteristics with maximum ductility: * **Tensile Ultimate Strength:** 95 - 130 MPa (14 - 19 ksi) * **Tensile Yield Strength (0.2% Offset):** 35 - 70 MPa (5 - 10 ksi) * **Elongation:** 20 - 30% (in 2 inches) * **Shear Strength:** 75 MPa (11 ksi) * **Fatigue Strength:** 50 MPa (7 ksi) * **Brinell Hardness:** 25 - 35 HB * **Bending Characteristics:** Excellent bendability with minimum bend radius of 0-1t --- #### **4. International Standards** * **ASTM:** * **ASTM B209** - Aluminum and Aluminum-Alloy Sheet and Plate * **ASTM B210** - Aluminum and Aluminum-Alloy Drawn Seamless Tubes * **ASTM B211** - Aluminum and Aluminum-Alloy Bar, Rod, and Wire * **ISO:** * **ISO 6361-2** - Wrought Aluminum and Aluminum Alloy Sheets, Strips and Plates * **ISO 6362-2** - Extruded Rod/Bar, Tube and Profiles * **EN:** * **EN 573-3** - Chemical composition and form of products * **EN 485-2** - Mechanical properties * **JIS:** **JIS H 4000** - Aluminum and Aluminum Alloy Sheets and Plates --- #### **5. Product Applications** 3003-O is specified for applications requiring maximum formability: * **Deep Drawing:** Kitchen utensils, cooking equipment, hollowware * **Spinning:** Lighting reflectors, decorative items, architectural elements * **Stamping:** Complex formed parts, electronic enclosures, automotive components * **HVAC:** Ductwork, ventilation components, heat exchanger housings * **Food Processing:** Cooking utensils, food containers, processing equipment * **Chemical Industry:** Storage tanks, chemical containers, processing vessels * **General Fabrication:** Complex shaped components, prototypes, custom parts --- #### **6. Key Advantages** * **Maximum Formability:** Excellent for deep drawing, spinning, and severe forming operations * **Superior Ductility:** High elongation allows for complex fabrication * **Excellent Corrosion Resistance:** Good performance in various environments * **Good Weldability:** Compatible with all standard aluminum welding methods * **High Thermal Conductivity:** Suitable for heat transfer applications * **Non-Toxic:** Safe for food contact and cooking applications * **Cost-Effective:** Economical choice for formed aluminum components --- #### **7. Fabrication Characteristics** * **Welding:** Excellent weldability using GTAW, GMAW, and resistance welding * **Forming:** Superior for deep drawing, spinning, stamping, and bending operations * **Machining:** Good machinability; produces continuous chips * **Strain Hardening:** Can be cold worked after forming to increase strength * **Surface Treatment:** Excellent for anodizing, painting, and chemical conversion coatings * **Joining:** Suitable for adhesive bonding and mechanical fastening --- #### **8. Heat Treatment** * **Annealing Temperature:** 345°C (650°F) * **Soaking Time:** 2-3 hours * **Cooling Method:** Controlled cooling in furnace or air cooling * **Grain Structure:** Produces uniform, recrystallized fine grain structure --- #### **9. Corrosion Performance** * **Atmospheric Corrosion:** Excellent * **Marine Environment:** Good to Very Good * **Stress Corrosion Cracking:** Excellent Resistance * **Pitting Resistance:** Good * **Food and Chemical Resistance:** Excellent --- #### **10. Special Considerations** * **Work Hardening:** Material will strain-harden during forming operations * **Springback:** Minimal springback due to low yield strength * **Surface Quality:** Excellent surface for painting and decorative applications * **Post-Forming Heat Treatment:** Can be re-annealed if additional forming is required --- #### **11. Comparison with Other Tempers** * **vs H14:** Approximately 50% lower strength but 3-4 times greater elongation * **vs H18:** About 60% lower strength but significantly better formability * **Main Advantage:** Unmatched formability for complex fabrication processes **Conclusion** Aluminum 3003-O represents the most formable condition of the popular 3003 alloy, offering unparalleled workability for demanding fabrication processes. Its fully annealed state provides the ductility necessary for deep drawing, spinning, and other severe forming operations while maintaining the excellent corrosion resistance and thermal conductivity characteristic of the 3000 series alloys. While it offers the lowest mechanical strength in the 3003 series, its superior formability makes it the material of choice for manufacturing complex components across various industries including cookware, HVAC, food processing, and general metal fabrication. The alloy's combination of maximum workability, good corrosion resistance, and cost-effectiveness ensures its continued popularity for applications where complex shapes must be formed from aluminum sheet.

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 1658 gallon liquid totes Special package is available on request.