4047A Aluminum alloy,Aluminum 4047A alloy,E FORU

### **Product Introduction: Aluminum 4047A Alloy** **Overview** Aluminum 4047A Alloy is an enhanced version of the standard 4047 aluminum-silicon alloy, featuring tighter composition controls and improved consistency for high-performance brazing and welding applications. This near-eutectic alloy maintains the excellent fluidity and narrow melting range of 4047 while offering superior quality assurance and reliability in critical applications. --- ### **1. Chemical Composition (Typical Weight %)** | Element | Content (%) | |---------|-------------| | **Aluminum (Al)** | Balance | | **Silicon (Si)** | 11.5 - 12.5 | | **Iron (Fe)** | ≤ 0.6 | | **Copper (Cu)** | ≤ 0.15 | | **Manganese (Mn)** | ≤ 0.10 | | **Magnesium (Mg)** | ≤ 0.08 | | **Zinc (Zn)** | ≤ 0.10 | | **Titanium (Ti)** | ≤ 0.10 | | **Other Elements** | ≤ 0.03 each | | **Total Others** | ≤ 0.10 | --- ### **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** | 34-39% IACS | | **Thermal Conductivity** | 135-155 W/m·K | | **Coefficient of Thermal Expansion** | 20.5 × 10⁻⁶/°C | | **Modulus of Elasticity** | 74 GPa | | **Specific Heat Capacity** | 0.90 J/g·°C | --- ### **3. Mechanical Properties (As-deposited Condition)** | Property | Value Range | |----------|-------------| | **Tensile Strength** | 165-205 MPa | | **Yield Strength (0.2% Offset)** | 85-125 MPa | | **Elongation (in 50mm)** | 7-14% | | **Hardness (Brinell)** | 58-73 HB | | **Shear Strength** | 145-175 MPa | | **Fatigue Strength** | 75-95 MPa | --- ### **4. International Standards** | Standard Body | Designation | |---------------|-------------| | **Aluminum Association (AA)** | AA 4047A | | **European Standard (EN)** | EN AW-4047A | | **ISO** | AlSi12 (ISO 18273) | | **UNS** | A94047 | | **AWS** | A5.10 ER4047 | | **ASTM** | B26, B108 | --- ### **5. Product Applications** **High-Quality Brazing Applications:** - Aerospace heat exchangers - Nuclear component brazing - Medical equipment manufacturing - Automotive fuel system components - Precision instrument brazing **Critical Welding Applications:** - Aerospace structural welding - Pressure vessel fabrication - Nuclear industry components - Defense equipment manufacturing - High-reliability automotive parts **Specialized Applications:** - Electronic enclosure sealing - Hermetic package brazing - Vacuum system components - Cryogenic equipment - Satellite component fabrication --- ### **6. Key Characteristics & Advantages** - **Enhanced Consistency**: Tighter composition controls for reliable performance - **Superior Surface Quality**: Improved wire surface for better feeding - **Reduced Porosity**: Minimized gas content for high-integrity joints - **Excellent Reproducibility**: Consistent results in high-volume production - **Stable Arc Characteristics**: Smooth and predictable welding performance - **Improved Corrosion Resistance**: Enhanced performance in harsh environments - **Quality Assurance**: Meets stringent aerospace and nuclear industry standards --- ### **7. Special Features of 4047A Variant** **Quality Enhancements:** - Reduced iron content for improved ductility - Tighter silicon control for consistent melting behavior - Lower impurity levels for superior joint integrity - Enhanced surface finish on wire and rod products - Improved batch-to-batch consistency **Performance Benefits:** - More consistent capillary flow in brazing - Reduced spatter in welding operations - Improved wetting characteristics - Better fillet formation in brazed joints - Enhanced mechanical properties in deposited metal --- ### **8. Processing Guidelines** **Quality Control Requirements:** - Certified material traceability - Regular chemical analysis verification - Surface quality inspections - Dimensional tolerance monitoring - Performance qualification testing **Brazing Applications:** - Optimal brazing temperature: 580-590°C - Controlled atmosphere brazing recommended - Suitable for vacuum brazing processes - Ideal for critical joint applications **Welding Applications:** - Strict parameter control required - Certified welding procedures - Qualified personnel recommended - Comprehensive quality documentation **Disclaimer:** The information provided is for reference purposes only. The 4047A variant offers enhanced quality and consistency for critical applications but requires strict process control and quality assurance procedures. For aerospace, nuclear, and other high-reliability applications, consult specific material certifications and conduct thorough procedure qualifications. Always adhere to applicable industry standards and customer-specific requirements.

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 1758 gallon liquid totes Special package is available on request.