4018 Aluminum alloy,Aluminum 4018 alloy,E FORU

### **Product Introduction: Aluminum 4018 Alloy** **Overview** Aluminum 4018 Alloy is a specialized aluminum-silicon alloy developed for applications requiring enhanced strength, excellent corrosion resistance, and good thermal stability. This alloy demonstrates superior performance in elevated temperature applications and offers improved mechanical properties compared to standard 4xxx series alloys, making it suitable for demanding industrial and automotive applications. --- ### **1. Chemical Composition (Typical Weight %)** | Element | Content (%) | |---------|-------------| | **Aluminum (Al)** | Balance | | **Silicon (Si)** | 1.5 - 2.2 | | **Iron (Fe)** | 0.5 - 0.9 | | **Copper (Cu)** | 0.20 - 0.45 | | **Manganese (Mn)** | 0.30 - 0.7 | | **Magnesium (Mg)** | 0.25 - 0.50 | | **Zinc (Zn)** | ≤ 0.20 | | **Chromium (Cr)** | 0.15 - 0.35 | | **Titanium (Ti)** | 0.05 - 0.15 | | **Others (Each)** | ≤ 0.05 | | **Others (Total)** | ≤ 0.15 | --- ### **2. Physical Properties** | Property | Value / Description | |----------|---------------------| | **Density** | 2.73 g/cm³ | | **Melting Range** | 625 - 645 °C | | **Electrical Conductivity** | 42-47% IACS | | **Thermal Conductivity** | 160-175 W/m·K | | **Coefficient of Thermal Expansion** | 22.5 × 10⁻⁶/°C | | **Modulus of Elasticity** | 72 GPa | | **Specific Heat Capacity** | 0.88 J/g·°C | --- ### **3. Mechanical Properties (by Temper Condition)** | Temper | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | |--------|------------------------|----------------------|----------------| | **O (Annealed)** | 130-160 | 60-90 | 18-25 | | **H12** | 150-180 | 120-150 | 12-18 | | **H14** | 170-200 | 140-170 | 8-14 | | **H16** | 190-220 | 160-190 | 5-10 | | **H18** | 210-240 | 180-210 | 3-7 | --- ### **4. International Standards** | Standard Body | Designation | |---------------|-------------| | **Aluminum Association (AA)** | AA 4018 | | **European Standard (EN)** | EN AW-4018 | | **ISO** | AlSi2MnMg (ISO 209) | | **UNS** | A94018 | | **JIS H** | A4018 | --- ### **5. Product Applications** **Automotive Applications:** - Engine components - Transmission parts - Heat shield panels - Exhaust system components - Turbocharger housings **Aerospace Applications:** - Aircraft structural components - Engine bay components - Heat exchanger parts - Interior structural panels - Satellite components **Industrial Applications:** - High-temperature equipment - Industrial furnace parts - Heat treatment fixtures - Chemical processing equipment - Power generation components **Specialized Applications:** - Brake system components - Clutch parts - High-temperature sensors - Thermal management systems - Specialized machinery parts --- ### **6. Key Characteristics & Advantages** - **Enhanced High-Temperature Performance**: Maintains mechanical properties at elevated temperatures (up to 200°C) - **Superior Corrosion Resistance**: Excellent resistance to industrial and automotive environments - **Improved Strength Characteristics**: Higher mechanical properties than standard 4xxx alloys - **Good Thermal Stability**: Minimal dimensional changes under thermal cycling - **Excellent Fatigue Resistance**: Superior performance under cyclic loading conditions - **Good Wear Resistance**: Enhanced surface durability - **Optimized Formability**: Balanced formability despite higher strength --- ### **7. Special Features** **High-Temperature Capabilities:** - Stable mechanical properties up to 200°C - Good creep resistance - Excellent thermal fatigue performance - Minimal property degradation after thermal exposure **Enhanced Performance Features:** - Improved stress corrosion cracking resistance - Better fatigue strength than comparable alloys - Enhanced surface hardness - Good oxidation resistance at elevated temperatures **Manufacturing Advantages:** - Good weldability using TIG and MIG methods - Suitable for hot forming operations - Consistent performance in various tempers - Excellent machinability in strain-hardened conditions - Predictable behavior during fabrication processes --- ### **8. Quality and Performance Standards** - Meets automotive industry standards for high-temperature applications - Suitable for aerospace component requirements - Consistent material properties for critical applications - Good performance in corrosive and high-temperature environments - Reliable for safety-critical components **Disclaimer:** The information provided is for reference purposes only. Specific properties may vary depending on manufacturing processes, temper conditions, product form, and thickness. For critical applications, especially those involving high temperatures, consult technical data sheets from material suppliers and conduct appropriate testing. Performance at elevated temperatures is particularly dependent on actual service conditions and exposure duration.

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 1742 gallon liquid totes Special package is available on request.