6053-O Aluminum alloy,Aluminum 6053-O alloy,E FORU

### **6053-O Aluminum Alloy: Product Introduction** **Overview** 6053-O is a heat-treatable aluminum alloy primarily known for its excellent **brazability** and good corrosion resistance. It belongs to the Al-Mg-Si alloy system and is supplied in the annealed ("O" temper) condition. This state provides the alloy with maximum softness and ductility, making it exceptionally formable for complex shaping operations before it is heat-treated to higher strength levels. It is particularly well-suited for applications involving brazing, such as heat exchangers. --- #### **1. Chemical Composition (Weight %)** The typical chemical composition of 6053 aluminum alloy conforms to the following international standards: | Element | Minimum (%) | Maximum (%) | | :--- | :--- | :--- | | Silicon (Si) | 0.40 | 0.7 | | Iron (Fe) | - | 0.15 | | Copper (Cu) | 0.10 | 0.20 | | Manganese (Mn) | - | 0.10 | | Magnesium (Mg) | 0.50 | 0.9 | | Chromium (Cr) | 0.15 | 0.35 | | Zinc (Zn) | - | 0.10 | | Titanium (Ti) | - | 0.10 | | Other (Each) | - | 0.05 | | Other (Total) | - | 0.15 | | **Aluminum (Al)** | **Balance** | | --- #### **2. Physical Properties** The following properties are typical for 6053-O alloy: | Property | Metric Value | Imperial Value | | :--- | :--- | :--- | | **Density** | 2.70 g/cm³ | 0.0975 lb/in³ | | **Melting Range** | ~ 555 - 650 °C | ~ 1030 - 1200 °F | | **Electrical Conductivity** | ~ 50-55% IACS* | ~ 50-55% IACS* | | **Thermal Conductivity** | ~ 180 W/m·K | ~ 1048 BTU·in/(hr·ft²·°F) | | **Coefficient of Thermal Expansion (20-100°C)** | 23.4 x 10⁻⁶ /°C | 13.0 x 10⁻⁶ /°F | *IACS: International Annealed Copper Standard --- #### **3. Mechanical Properties (Typical for O Temper)** The "O" (Annealed) temper represents the softest and most ductile state of the alloy. | Property | Metric Value | Imperial Value | | :--- | :--- | :--- | | **Tensile Strength** | ~ 125 - 165 MPa | ~ 18 - 24 ksi | | **Yield Strength (0.2% Offset)** | ~ 55 - 95 MPa | ~ 8 - 14 ksi | | **Elongation (in 50mm)** | ~ 20 - 30 % | ~ 20 - 30 % | | **Hardness (Brinell)** | ~ 35 HB | ~ 35 HB | **Note:** After brazing and subsequent artificial aging (e.g., T4 or T6 temper), the mechanical strength increases significantly. --- #### **4. International Standards** 6053 Aluminum Alloy is specified in several key international standards: * **ASTM (USA):** ASTM B317 (Standard Specification for Extruded Bar, Rod, Pipe, and Structural Shapes for Electrical Purposes - Bus Conductor) may reference similar alloys. It is more specifically covered under general Aluminum Association rules. * **AA (Aluminum Association, USA):** The Aluminum Association maintains the definitive registration for alloy 6053 and its tempers. * **UNS (Unified Numbering System):** UNS A96053 * **ISO (International Organization for Standardization):** While not as commonly referenced as AA or ASTM for this specific alloy, it would fall under generic Al-Mg-Si designations in ISO standards. --- #### **5. Product Applications** 6053-O is primarily selected for applications where its unique combination of properties is critical: * **Heat Exchangers:** The primary application, especially for automotive radiators and charge air coolers, due to its superb brazing performance in controlled atmosphere brazing (CAB) furnaces. * **Brazed Assemblies:** Any complex assembly that requires joining multiple aluminum components via brazing. * **Electrical Bus Conductors:** Its good electrical conductivity makes it suitable for certain electrical applications. * **Highly Formed Parts:** Components that require severe bending, drawing, or stamping in the soft "O" temper before final heat treatment. --- #### **6. Key Characteristics & Advantages** * **Superior Brazability:** The carefully controlled chemistry, especially the Mg and Si content, makes it ideal for fluxless brazing processes. * **Excellent Formability:** In the "O" temper, it can be extensively formed into complex shapes. * **Good Corrosion Resistance:** Offers respectable resistance to atmospheric and marine environments. * **Age-Hardenable:** After brazing, the alloy can be naturally or artificially aged to develop higher strength (e.g., 6053-T4/T6), making the final component strong and durable. * **Moderate Strength-to-Weight Ratio:** Provides a good balance of lightweight properties and usable strength after heat treatment. **Disclaimer:** The information provided here is for reference purposes. Properties can vary based on manufacturing processes and specific product forms. For critical applications, always consult the manufacturer's certified datasheet and relevant material standards.

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 1983 gallon liquid totes Special package is available on request.