4047 Aluminum alloy,Aluminum 4047 alloy,E FORU

### **Product Introduction: Aluminum 4047 Alloy** **Overview** Aluminum 4047 Alloy is a versatile aluminum-silicon alloy primarily used as a brazing filler metal and welding wire. Known for its near-eutectic composition, it offers excellent fluidity and a narrow melting range, making it ideal for precise brazing operations and high-quality welding applications. The alloy is widely used in automotive, HVAC, and electrical industries for its reliable performance and consistent results. --- ### **1. Chemical Composition (Typical Weight %)** | Element | Content (%) | |---------|-------------| | **Aluminum (Al)** | Balance | | **Silicon (Si)** | 11.0 - 13.0 | | **Iron (Fe)** | ≤ 0.8 | | **Copper (Cu)** | ≤ 0.30 | | **Manganese (Mn)** | ≤ 0.15 | | **Magnesium (Mg)** | ≤ 0.10 | | **Zinc (Zn)** | ≤ 0.20 | | **Other Elements** | ≤ 0.05 each | | **Total Others** | ≤ 0.15 | --- ### **2. Physical Properties** | Property | Value / Description | |----------|---------------------| | **Density** | 2.66 g/cm³ | | **Melting Range** | 577 - 580 °C | | **Solidus Temperature** | 577 °C | | **Liquidus Temperature** | 580 °C | | **Electrical Conductivity** | 33-38% IACS | | **Thermal Conductivity** | 130-150 W/m·K | | **Coefficient of Thermal Expansion** | 20.5 × 10⁻⁶/°C | | **Modulus of Elasticity** | 74 GPa | --- ### **3. Mechanical Properties (As-deposited Condition)** | Property | Value Range | |----------|-------------| | **Tensile Strength** | 160-200 MPa | | **Yield Strength (0.2% Offset)** | 80-120 MPa | | **Elongation (in 50mm)** | 6-12% | | **Hardness (Brinell)** | 55-70 HB | | **Shear Strength** | 140-170 MPa | --- ### **4. International Standards** | Standard Body | Designation | |---------------|-------------| | **Aluminum Association (AA)** | AA 4047 | | **European Standard (EN)** | EN AW-4047 | | **ISO** | AlSi12 (ISO 18273) | | **UNS** | A94047 | | **AWS** | A5.10 ER4047 | | **ASTM** | B26, B108 | --- ### **5. Product Applications** **Brazing Applications:** - Heat exchanger components - Automotive radiators - Air conditioner coils - Evaporators and condensers - Electrical busbar connections **Welding Applications:** - TIG and MIG welding of aluminum alloys - Repair and maintenance welding - Automotive aluminum welding - Structural aluminum fabrication - Pipe and tube welding **Specialized Applications:** - Cladding for brazing sheets - Precision brazing of thin sections - High-quality weld requirements - Aerospace components - Nuclear industry applications --- ### **6. Key Characteristics & Advantages** - **Near-Eutectic Composition**: Narrow melting range for precise temperature control - **Excellent Fluidity**: Superior flow characteristics in brazing and welding - **Low Melting Point**: Energy efficient processing - **Good Corrosion Resistance**: Comparable to most aluminum base metals - **Minimal Shrinkage**: Reduced cracking tendency in welded and brazed joints - **Excellent Wettability**: Good spreading on aluminum surfaces - **Versatile Application**: Suitable for both brazing and welding processes --- ### **7. Special Features** **Brazing Performance:** - 3°C melting range for precise control - Excellent capillary action - Good fillet formation - Compatible with various brazing methods - Minimal base metal erosion **Welding Characteristics:** - Smooth arc transfer - Low spatter generation - Good bead appearance - Easy slag removal - Consistent deposition rates --- ### **8. Processing Guidelines** **Brazing Parameters:** - Optimal brazing temperature: 580-590°C - Suitable for torch, furnace, and induction brazing - Works with standard aluminum brazing fluxes - Ideal for close-clearance joints (0.05-0.15 mm) **Welding Parameters:** - Suitable for TIG and MIG processes - Recommended shielding gas: Argon or Argon/Helium mixtures - Standard welding techniques applicable - Preheating generally not required for thin sections **Quality Assurance:** - Visual inspection for complete fusion and penetration - Dye penetrant testing for surface defects - Radiographic examination for critical applications - Mechanical testing for quality verification **Disclaimer:** The information provided is for reference purposes only. The near-eutectic characteristics of 4047 alloy make it particularly suitable for applications requiring precise temperature control and excellent fluidity. However, performance may vary depending on specific process parameters, base materials, and application requirements. Always conduct appropriate testing for critical applications and follow manufacturer recommendations for processing parameters and quality control procedures.

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 1757 gallon liquid totes Special package is available on request.