4048 Aluminum alloy,Aluminum 4048 alloy,E FORU

### **Product Introduction: Aluminum 4048 Alloy** **Overview** Aluminum 4048 Alloy is a specialized aluminum-silicon brazing filler metal designed for applications requiring a specific balance of silicon content and brazing characteristics. This alloy provides good fluidity and controlled melting behavior, making it suitable for various industrial brazing applications where precise control over the brazing process is required. --- ### **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-brazed Condition)** | Property | Value Range | |----------|-------------| | **Tensile Strength** | 150-190 MPa | | **Yield Strength (0.2% Offset)** | 70-110 MPa | | **Elongation (in 50mm)** | 5-12% | | **Hardness (Brinell)** | 50-65 HB | | **Shear Strength** | 130-160 MPa | --- ### **4. International Standards** | Standard Body | Designation | |---------------|-------------| | **Aluminum Association (AA)** | AA 4048 | | **European Standard (EN)** | EN AW-4048 | | **ISO** | AlSi12 (ISO 18273) | | **UNS** | A94048 | | **AWS** | A5.8 BAlSi-4 | --- ### **5. Product Applications** **Brazing Applications:** - Heat exchanger components - Automotive radiator assemblies - Air conditioning system parts - Electrical busbar connections - General aluminum fabrication **Industrial Applications:** - Heat transfer equipment - Cooling system components - Electrical enclosure manufacturing - Plumbing and piping systems - Repair and maintenance brazing **Specialized Applications:** - Thin-gauge aluminum brazing - Multi-layer assemblies - Complex joint configurations - Production line brazing operations - Field repair applications --- ### **6. Key Characteristics & Advantages** - **Good Fluidity**: Effective flow characteristics in brazing operations - **Controlled Melting**: Predictable melting behavior for consistent results - **Corrosion Resistance**: Suitable for various service environments - **Good Wettability**: Effective spreading on aluminum surfaces - **Process Versatility**: Adaptable to different brazing methods - **Reliable Performance**: Consistent results in production environments - **Economic Efficiency**: Cost-effective solution for many brazing applications --- ### **7. Special Features** **Brazing Performance:** - Narrow melting range for good process control - Adequate capillary action for joint filling - Reasonable gap-filling capabilities - Compatibility with standard brazing fluxes - Good fillet formation characteristics **Manufacturing Benefits:** - Suitable for automated brazing processes - Consistent performance in volume production - Good for both thin and thick section brazing - Adaptable to various joint designs - Reliable in different production environments --- ### **8. Processing Guidelines** **Brazing Parameters:** - Recommended brazing temperature: 580-590°C - Suitable for torch, furnace, and induction brazing - Works with conventional aluminum brazing fluxes - Optimal for joint clearances of 0.05-0.20 mm **Quality Control:** - Visual inspection for complete joint filling - Leak testing for sealed assemblies - Mechanical testing for critical applications - Microstructural examination for quality verification **Safety Considerations:** - Proper ventilation during brazing operations - Use of appropriate personal protective equipment - Safe handling of brazing fluxes and chemicals - Adequate training for operating personnel **Disclaimer:** The information provided is for reference purposes only. Brazing performance may vary depending on specific application requirements, base materials, and process parameters. Users should conduct appropriate testing and procedure qualifications for their specific applications. Always follow manufacturer recommendations for brazing materials and equipment, and adhere to applicable safety standards and regulations.

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 1759 gallon liquid totes Special package is available on request.