4044 Aluminum alloy,Aluminum 4044 alloy,E FORU

### **Product Introduction: Aluminum 4044 Alloy** **Overview** Aluminum 4044 Alloy is a specialized aluminum-silicon brazing alloy designed primarily for cladding applications in brazing sheets. With its specific silicon content and optimized composition, it offers excellent brazing characteristics, good fluidity, and reliable performance in various brazing operations. The alloy is particularly valued in heat exchanger manufacturing and other applications where controlled atmosphere brazing is employed. --- ### **1. Chemical Composition (Typical Weight %)** | Element | Content (%) | |---------|-------------| | **Aluminum (Al)** | Balance | | **Silicon (Si)** | 6.0 - 8.0 | | **Iron (Fe)** | ≤ 0.8 | | **Copper (Cu)** | ≤ 0.25 | | **Manganese (Mn)** | ≤ 0.10 | | **Magnesium (Mg)** | ≤ 0.10 | | **Zinc (Zn)** | ≤ 0.20 | | **Titanium (Ti)** | ≤ 0.15 | | **Others (Each)** | ≤ 0.05 | | **Others (Total)** | ≤ 0.15 | --- ### **2. Physical Properties** | Property | Value / Description | |----------|---------------------| | **Density** | 2.68 g/cm³ | | **Melting Range** | 575 - 610 °C | | **Solidus Temperature** | 575 °C | | **Liquidus Temperature** | 610 °C | | **Electrical Conductivity** | 38-43% IACS | | **Thermal Conductivity** | 155-175 W/m·K | | **Coefficient of Thermal Expansion** | 22.0 × 10⁻⁶/°C | | **Modulus of Elasticity** | 72 GPa | --- ### **3. Mechanical Properties (As-clad Condition)** | Property | Value Range | |----------|-------------| | **Tensile Strength** | 120-160 MPa | | **Yield Strength (0.2% Offset)** | 50-90 MPa | | **Elongation (in 50mm)** | 15-25% | | **Hardness (Brinell)** | 40-55 HB | --- ### **4. International Standards** | Standard Body | Designation | |---------------|-------------| | **Aluminum Association (AA)** | AA 4044 | | **European Standard (EN)** | EN AW-4044 | | **ISO** | AlSi7 (ISO 18273) | | **UNS** | A94044 | | **ASTM** | B209 | --- ### **5. Product Applications** **Brazing Applications:** - Heat exchanger fins and tubes - Automotive radiators - Air conditioner evaporators and condensers - Charge air coolers - Oil coolers and intercoolers **Cladding Applications:** - Brazing sheet cladding material - Multi-layer composite materials - Heat transfer surface coatings - Joining applications in aluminum assemblies **Industry Applications:** - Automotive heat exchange systems - HVAC equipment manufacturing - Refrigeration components - Aerospace heat exchangers - Industrial cooling systems --- ### **6. Key Characteristics & Advantages** - **Excellent Brazing Performance**: Optimized melting characteristics for controlled atmosphere brazing - **Good Fluidity**: Superior flow characteristics during brazing operations - **Controlled Melting Range**: Precise solidus and liquidus temperatures for reliable brazing - **Corrosion Resistance**: Good resistance to various cooling media and environments - **Compatibility**: Excellent compatibility with core alloys in brazing sheets - **Surface Quality**: Good for subsequent finishing and coating operations - **Thermal Stability**: Maintains integrity during brazing cycle --- ### **7. Special Features** **Brazing Characteristics:** - Controlled melting behavior - Good capillary action - Minimal interaction with base metals - Compatible with commercial brazing fluxes - Stable in controlled atmosphere brazing furnaces **Manufacturing Advantages:** - Can be rolled to thin gauges - Good bonding characteristics with core alloys - Consistent performance in high-volume production - Predictable behavior during brazing processes - Excellent for automated manufacturing --- ### **8. Processing Guidelines** **Brazing Parameters:** - Optimal brazing temperature: 595-605°C - Suitable for controlled atmosphere brazing - Compatible with vacuum brazing processes - Works well with standard brazing fluxes **Manufacturing Considerations:** - Proper surface preparation essential - Controlled heating and cooling rates recommended - Adequate fixturing for assembly required - Quality control through visual and leak testing **Disclaimer:** The information provided is for reference purposes only. Brazing performance may vary depending on specific process parameters, base materials, and equipment conditions. For critical applications, consult technical data sheets from material suppliers and conduct appropriate brazing procedure qualifications. The alloy is specifically designed for brazing applications and should be evaluated for compatibility with specific core materials and brazing processes.

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 1754 gallon liquid totes Special package is available on request.