6063-O Aluminum alloy,Aluminum 6063-O alloy,E FORU

### **Aluminum 6063-O Alloy: Product Introduction** **Overview** Aluminum 6063-O is the annealed temper of the widely used 6063 aluminum-magnesium-silicon alloy. In this "O" (annealed) condition, the alloy is in its **softest state**, offering **maximum ductility and formability** while maintaining excellent corrosion resistance and surface quality. This temper is specifically designed for applications requiring **severe forming operations** where high strength is not required during manufacturing but may be developed through subsequent heat treatment. --- #### **1. Chemical Composition (Weight %)** | Element | Minimum (%) | Maximum (%) | |---------|-------------|-------------| | Silicon (Si) | 0.20 | 0.60 | | Iron (Fe) | - | 0.35 | | Copper (Cu) | - | 0.10 | | Manganese (Mn) | - | 0.10 | | Magnesium (Mg) | 0.45 | 0.90 | | Chromium (Cr) | - | 0.10 | | Zinc (Zn) | - | 0.10 | | Titanium (Ti) | - | 0.10 | | Other (Each) | - | 0.05 | | Other (Total) | - | 0.15 | | **Aluminum (Al)** | **Balance** | | --- #### **2. Physical Properties** | Property | Metric Value | Imperial Value | |----------|--------------|----------------| | **Density** | 2.70 g/cm³ | 0.0975 lb/in³ | | **Melting Range** | 615-655 °C | 1140-1210 °F | | **Electrical Conductivity** | 58-62% IACS | 58-62% IACS | | **Thermal Conductivity** | 200-218 W/m·K | 1160-1265 BTU·in/(hr·ft²·°F) | | **Coefficient of Thermal Expansion** | 23.4 × 10⁻⁶/°C | 13.0 × 10⁻⁶/°F | | **Modulus of Elasticity** | 68.3 GPa | 9,900 ksi | --- #### **3. Mechanical Properties** **Typical Mechanical Properties for 6063-O:** | Property | Metric Value | Imperial Value | |----------|--------------|----------------| | **Tensile Strength** | 90-130 MPa | 13-19 ksi | | **Yield Strength (0.2% Offset)** | 48-70 MPa | 7-10 ksi | | **Elongation (in 50mm)** | 20-30% | 20-30% | | **Hardness (Brinell)** | 25-35 HB | 25-35 HB | | **Shear Strength** | 70-85 MPa | 10-12 ksi | | **Fatigue Strength** | 55-65 MPa | 8-9.5 ksi | --- #### **4. International Standards** * **ASTM Standards:** * ASTM B221: Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes * ASTM B210: Standard Specification for Aluminum and Aluminum-Alloy Drawn Seamless Tubes * **European Standards (EN):** * EN 573-3: Chemical composition (Designation: EN AW-6063) * EN 755-2: Mechanical properties for extruded products * **ISO Standards:** * ISO 6361-2: Wrought aluminum and aluminum alloy sheets, strips and plates * ISO 6362-2: Wrought aluminum and aluminum alloy extruded rods/bars, tubes and profiles --- #### **5. Product Applications** **Forming and Fabrication:** - Deep drawn components - Complex bent sections - Spin-formed parts - Severe formed architectural elements **Heat Treatment Precursors:** - Components for subsequent solution heat treatment - Parts requiring aging after forming - Pre-forms for T5/T6 temper development **Architectural Applications:** - Decorative trim requiring tight bends - Custom architectural features - Ornamental metalwork - Signage and display components **General Manufacturing:** - Prototype development - Custom fabrications - Non-structural components - Experimental designs --- #### **6. Key Characteristics & Advantages** * **Excellent Formability:** Can undergo severe bending and forming operations without cracking * **Maximum Ductility:** Highest elongation capability of all 6063 tempers * **Good Corrosion Resistance:** Maintains excellent corrosion resistance characteristic of 6xxx series alloys * **Superior Surface Quality:** Ideal for applications requiring high-quality surface finish * **Excellent Weldability:** All common welding methods can be successfully employed * **Heat Treatable:** Can be solution heat-treated and aged to T5/T6 temper after forming operations * **High Electrical Conductivity:** Better conductivity than higher strength tempers --- #### **7. Heat Treatment Potential** A significant advantage of 6063-O is its ability to be heat treated after forming: **Typical Heat Treatment Sequence:** 1. **Solution Heat Treatment:** 515-520°C (960-970°F) 2. **Quenching:** Rapid cooling in water or air 3. **Artificial Aging:** 175-185°C (347-365°F) for 4-8 hours **Final Properties After T6 Treatment:** - Tensile Strength: 185-230 MPa (27-33 ksi) - Yield Strength: 145-185 MPa (21-27 ksi) - Elongation: 8-12% --- #### **8. Processing Considerations** **Forming Characteristics:** - Minimum bend radius: 0-1t (depending on material thickness) - Excellent for deep drawing operations - Suitable for spinning and stretch forming - Low springback characteristics **Machining:** - Good machinability in annealed condition - Produces discontinuous chips - Requires sharp tools with positive rake angles - Good surface finish achievable **Joining Methods:** - GTAW (TIG) and GMAW (MIG) welding - Resistance welding - Adhesive bonding - Mechanical fastening The 6063-O temper serves as the fundamental starting condition for many manufacturing processes, providing maximum workability while offering the potential to develop substantial strength through subsequent heat treatment. This combination makes it invaluable for complex fabrication projects across multiple industries.

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 2000 gallon liquid totes Special package is available on request.