4009 Aluminum alloy,Aluminum 4009 alloy,E FORU

### **Product Introduction: Aluminum 4009 Alloy** **Overview** Aluminum 4009 Alloy is a heat-treatable aluminum-silicon alloy specifically designed for high-strength structural applications, particularly in the automotive and transportation industries. The alloy combines the excellent castability of aluminum-silicon alloys with enhanced mechanical properties through heat treatment, making it suitable for safety-critical components requiring high strength-to-weight ratios and good fatigue resistance. --- ### **1. Chemical Composition (Typical Weight %)** | Element | Content (%) | |---------|-------------| | **Aluminum (Al)** | Balance | | **Silicon (Si)** | 5.5 - 6.5 | | **Copper (Cu)** | 0.8 - 1.2 | | **Magnesium (Mg)** | 0.35 - 0.55 | | **Iron (Fe)** | ≤ 0.15 | | **Manganese (Mn)** | ≤ 0.15 | | **Zinc (Zn)** | ≤ 0.10 | | **Titanium (Ti)** | 0.05 - 0.15 | | **Others (Each)** | ≤ 0.05 | | **Others (Total)** | ≤ 0.15 | --- ### **2. Physical Properties** | Property | Value / Description | |----------|---------------------| | **Density** | 2.70 g/cm³ | | **Melting Range** | 555 - 615 °C | | **Electrical Conductivity** | 35-40% IACS | | **Thermal Conductivity** | 140-160 W/m·K | | **Coefficient of Thermal Expansion** | 21.8 × 10⁻⁶/°C | | **Modulus of Elasticity** | 72 GPa | --- ### **3. Mechanical Properties (Typical Values)** | Temper | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | |--------|------------------------|----------------------|----------------| | **T5** | 280-320 | 220-260 | 3-6 | | **T6** | 330-370 | 280-320 | 2-4 | | **T7** | 300-340 | 250-290 | 3-7 | --- ### **4. International Standards** | Standard Body | Designation | |---------------|-------------| | **Aluminum Association (AA)** | AA 4009 | | **European Standard (EN)** | EN AW-4009 | | **ISO** | AlSi6Cu1Mg | | **UNS** | A94009 | | **JIS H** | A4009 | --- ### **5. Product Applications** **Automotive Applications:** - Engine mounting brackets - Suspension components - Steering knuckles - Transmission cases - Chassis components **Aerospace Applications:** - Aircraft structural brackets - Landing gear components - Engine mounts - Spacecraft structural parts **Industrial Applications:** - High-pressure valve bodies - Pump housings - Machine tool components - Robotics structural parts --- ### **6. Key Characteristics & Advantages** - **High Strength-to-Weight Ratio**: Excellent mechanical properties with low density - **Good Castability**: Superior fluidity and reduced hot tearing tendency - **Excellent Heat Treatability**: Responds well to solution treatment and aging processes - **Good Fatigue Resistance**: Suitable for dynamic load applications - **Machinability**: Good machining characteristics in heat-treated conditions - **Corrosion Resistance**: Adequate resistance for most automotive environments --- ### **7. Special Features** **Heat Treatment Response:** - Rapid response to artificial aging - Stable mechanical properties after heat treatment - Good retention of properties at elevated temperatures **Manufacturing Advantages:** - Excellent pressure tightness for cast components - Good dimensional stability during heat treatment - Compatible with various casting processes including sand and permanent mold - Predictable shrinkage characteristics --- ### **8. Quality Standards** - Meets automotive industry quality requirements - Suitable for safety-critical applications - Consistent performance in high-volume production - Traceable material properties **Disclaimer:** The information provided is for reference purposes only. Specific properties may vary depending on manufacturing processes, heat treatment parameters, casting methods, 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 1729 gallon liquid totes Special package is available on request.