4008 Aluminum alloy,Aluminum 4008 alloy,E FORU

### **Product Introduction: Aluminum 4008 Alloy** **Overview** Aluminum 4008 Alloy is a heat-treatable aluminum-silicon alloy specifically developed for brazing applications, particularly in heat exchanger manufacturing. The alloy contains carefully balanced amounts of silicon, magnesium, and other elements to provide excellent brazeability combined with good mechanical properties after brazing and heat treatment. It is commonly used as cladding material in brazing sheets for automotive and HVAC heat exchangers. --- ### **1. Chemical Composition (Typical Weight %)** | Element | Content (%) | |---------|-------------| | **Aluminum (Al)** | Balance | | **Silicon (Si)** | 1.8 - 2.6 | | **Iron (Fe)** | ≤ 0.8 | | **Copper (Cu)** | ≤ 0.15 | | **Manganese (Mn)** | ≤ 0.05 | | **Magnesium (Mg)** | 0.30 - 0.7 | | **Zinc (Zn)** | ≤ 0.10 | | **Titanium (Ti)** | ≤ 0.10 | | **Others (Each)** | ≤ 0.05 | | **Others (Total)** | ≤ 0.15 | --- ### **2. Physical Properties** | Property | Value / Description | |----------|---------------------| | **Density** | 2.69 g/cm³ | | **Melting Range** | 575 - 630 °C | | **Electrical Conductivity** | 40-45% IACS | | **Thermal Conductivity** | 150-170 W/m·K | | **Coefficient of Thermal Expansion** | 22.2 × 10⁻⁶/°C | | **Modulus of Elasticity** | 71 GPa | --- ### **3. Mechanical Properties (Typical Values)** | Condition | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | |-----------|------------------------|----------------------|----------------| | **As-brazed** | 110-140 | 50-80 | 15-25 | | **Heat Treated** | 180-220 | 150-190 | 8-15 | --- ### **4. International Standards** | Standard Body | Designation | |---------------|-------------| | **Aluminum Association (AA)** | AA 4008 | | **European Standard (EN)** | EN AW-4008 | | **ISO** | AlSi2.5Mg | | **UNS** | A94008 | | **JIS H** | A4008 | --- ### **5. Product Applications** **Primary Applications:** - Heat exchanger fins and tubes - Automotive radiators - HVAC evaporators and condensers - Charge air coolers - Oil coolers **Secondary Applications:** - Brazing sheet cladding - Heat transfer components - Chemical processing equipment - Food processing heat exchangers --- ### **6. Key Characteristics & Advantages** - **Excellent Brazing Performance**: Optimized melting characteristics for controlled atmosphere brazing - **Post-braze Strength**: Develops good mechanical properties after brazing and heat treatment - **Good Corrosion Resistance**: Suitable for various cooling media and environmental conditions - **Fluid Compatibility**: Resists corrosion from refrigerants and engine coolants - **Thermal Stability**: Maintains performance at elevated temperatures - **Formability**: Good for manufacturing complex heat exchanger components --- ### **7. Special Features** **Brazing Characteristics:** - Controlled melting point for precise brazing operations - Good flow characteristics during brazing - Compatible with commercial brazing fluxes - Stable in controlled atmosphere brazing furnaces **Manufacturing Advantages:** - Can be rolled to thin gauges required for heat exchangers - Consistent performance in high-volume production - Good compatibility with core alloys in brazing sheets - Predictable behavior during fabrication processes --- **Disclaimer:** The information provided is for reference purposes only. Specific properties may vary depending on manufacturing processes, brazing conditions, heat treatment parameters, and product form. For critical applications, consult technical data sheets from material suppliers and conduct appropriate testing.

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 1728 gallon liquid totes Special package is available on request.