4046 Aluminum alloy,Aluminum 4046 alloy,E FORU

### **Product Introduction: Aluminum 4046 Alloy** **Overview** Aluminum 4046 Alloy is a specialized aluminum-silicon brazing filler metal known for its wide melting range and excellent capillary flow characteristics. This alloy is specifically designed for brazing applications where extended working time and superior gap-filling capabilities are required. Its balanced composition makes it suitable for various industrial brazing operations, particularly in complex assemblies and challenging joint configurations. --- ### **1. Chemical Composition (Typical Weight %)** | Element | Content (%) | |---------|-------------| | **Aluminum (Al)** | Balance | | **Silicon (Si)** | 9.0 - 11.0 | | **Iron (Fe)** | ≤ 0.8 | | **Copper (Cu)** | ≤ 0.30 | | **Manganese (Mn)** | ≤ 0.15 | | **Magnesium (Mg)** | 0.05 - 0.20 | | **Zinc (Zn)** | ≤ 0.20 | | **Bismuth (Bi)** | 0.02 - 0.20 | | **Others (Each)** | ≤ 0.05 | | **Others (Total)** | ≤ 0.15 | --- ### **2. Physical Properties** | Property | Value / Description | |----------|---------------------| | **Density** | 2.66 g/cm³ | | **Melting Range** | 570 - 600 °C | | **Solidus Temperature** | 570 °C | | **Liquidus Temperature** | 600 °C | | **Electrical Conductivity** | 34-39% IACS | | **Thermal Conductivity** | 135-155 W/m·K | | **Coefficient of Thermal Expansion** | 21.2 × 10⁻⁶/°C | | **Modulus of Elasticity** | 73 GPa | --- ### **3. Mechanical Properties (As-brazed Condition)** | Property | Value Range | |----------|-------------| | **Tensile Strength** | 140-180 MPa | | **Yield Strength (0.2% Offset)** | 60-100 MPa | | **Elongation (in 50mm)** | 10-18% | | **Hardness (Brinell)** | 45-60 HB | | **Shear Strength** | 120-150 MPa | --- ### **4. International Standards** | Standard Body | Designation | |---------------|-------------| | **Aluminum Association (AA)** | AA 4046 | | **European Standard (EN)** | EN AW-4046 | | **ISO** | AlSi10MgBi (ISO 18273) | | **UNS** | A94046 | | **AWS** | A5.8 BAlSi-5 | | **ASTM** | B26 | --- ### **5. Product Applications** **Brazing Applications:** - Complex heat exchanger assemblies - Multi-circuit refrigeration systems - Automotive heat exchangers - HVAC system components - Electrical enclosure brazing **Industrial Applications:** - Plate heat exchangers - Tube-to-header joints - Complex fabricated assemblies - Large surface area brazing - Gap-filling applications **Specialized Applications:** - Irregular joint configurations - Wide clearance joints - Multi-layer assemblies - Repair and maintenance brazing - Critical structural joints --- ### **6. Key Characteristics & Advantages** - **Wide Melting Range**: Extended working time for complex brazing operations - **Excellent Capillary Flow**: Superior gap-filling capabilities in wide joints - **Good Wettability**: Excellent spreading characteristics on aluminum surfaces - **Bismuth Enhancement**: Improved flow characteristics and surface tension properties - **Corrosion Resistance**: Good performance in various service environments - **Mechanical Properties**: Balanced strength and ductility in brazed joints - **Process Flexibility**: Suitable for various brazing methods and techniques --- ### **7. Special Features** **Brazing Performance:** - 30°C melting range for extended working time - Excellent performance in joint gaps up to 0.25 mm - Good compatibility with various aluminum base metals - Minimal interaction with base materials - Stable performance in controlled atmosphere brazing **Manufacturing Advantages:** - Forgiving for less-than-ideal joint preparations - Suitable for manual and automated processes - Good for large and complex assemblies - Reduced sensitivity to process variations - Consistent performance in production environments --- ### **8. Processing Guidelines** **Brazing Parameters:** - Recommended brazing temperature: 585-595°C - Suitable for torch, furnace, and induction brazing - Works with standard aluminum brazing fluxes - Optimal for joints with 0.05-0.25 mm clearance **Joint Design:** - Ideal for wide clearance applications - Suitable for complex joint configurations - Good for large area brazing surfaces - Effective in difficult-to-access areas **Quality Control:** - Visual inspection for complete flow and fillet formation - Leak testing for pressure-containing assemblies - Mechanical testing for critical applications - Microstructural examination for quality verification **Disclaimer:** The information provided is for reference purposes only. Brazing performance may vary depending on specific joint configurations, base materials, and process parameters. For critical applications, conduct thorough brazing procedure qualifications and consult technical data from material suppliers. The wide melting range characteristic makes this alloy particularly suitable for complex brazing operations but requires proper process control to achieve optimal results.

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 1756 gallon liquid totes Special package is available on request.