2041 Aluminum alloy,Aluminum 2041 alloy,E FORU

### **Product Datasheet: 2041 Aluminum Alloy** **1. Overview** 2041 Aluminum Alloy is a advanced aluminum-lithium (Al-Li) alloy within the 2xxx series, representing a significant innovation in lightweight aerospace materials. This third-generation Al-Li alloy is engineered to provide an exceptional combination of reduced density, high specific stiffness, excellent fatigue performance, and improved corrosion resistance compared to conventional aluminum alloys. The addition of lithium significantly decreases the alloy's weight while enhancing its mechanical properties, making it particularly valuable for weight-critical aerospace applications where every weight reduction contributes directly to improved fuel efficiency and performance. **2. International Standards** 2041 Aluminum alloy is recognized under several major international standards systems: * **UNS:** UNS A92041 * **ASTM:** ASTM B909 (Standard Guide for Aircraft Materials) * **AMS:** AMS 4413 (Aerospace Material Specification) * **AA (Aluminum Association):** AA 2041 * **EN:** EN 586 (Aluminum and aluminum alloys - Forgings) *Note: This alloy may also comply with specific OEM specifications from major aerospace manufacturers.* **3. Chemical Composition (Weight %)** The composition conforms to the limits set by the Aluminum Association (AA). | Element | Content (%) | | :--- | :--- | | **Aluminum (Al)** | Balance | | **Lithium (Li)** | 1.0 - 1.8 | | **Copper (Cu)** | 3.5 - 4.6 | | **Magnesium (Mg)** | 0.20 - 0.8 | | **Silver (Ag)** | 0.25 - 0.60 | | **Zirconium (Zr)** | 0.08 - 0.16 | | **Manganese (Mn)** | 0.10 - 0.50 | | **Iron (Fe)** | ≤ 0.15 | | **Silicon (Si)** | ≤ 0.12 | | **Zinc (Zn)** | ≤ 0.10 | | **Other Elements** | ≤ 0.05 each | | **Total Other Elements** | ≤ 0.15 | **4. Physical Properties** | Property | Value / Description | | :--- | :--- | | **Density** | 2.65 - 2.68 g/cm³ (0.0957 - 0.0968 lb/in³) | | **Melting Range** | ~ 580 - 650 °C (1075 - 1200 °F) | | **Electrical Conductivity** | Approximately 28-32% IACS | | **Thermal Conductivity** | ~ 90 - 110 W/m·K | | **Coefficient of Thermal Expansion** | ~ 21.5 - 22.5 × 10⁻⁶/°C (20-100°C) | | **Modulus of Elasticity** | 78.0 - 80.0 GPa (11,300 - 11,600 ksi) | **5. Mechanical Properties (Typical Values - T8 Temper)** *Properties represent typical values for plate product forms. Actual values may vary with processing.* | Property | Typical Value Range | | :--- | :--- | | **Tensile Strength (Ultimate)** | 530 - 580 MPa (77 - 84 ksi) | | **Tensile Yield Strength (0.2% Offset)** | 480 - 530 MPa (70 - 77 ksi) | | **Elongation at Break** | 6 - 10% | | **Compressive Yield Strength** | 490 - 540 MPa (71 - 78 ksi) | | **Shear Strength** | 310 - 350 MPa (45 - 51 ksi) | | **Fatigue Crack Growth Resistance** | Excellent | | **Fracture Toughness** | 28 - 35 MPa√m | **6. Key Characteristics & Advantages** * **Significant Weight Reduction:** 7-8% lower density compared to conventional aluminum alloys * **Enhanced Specific Stiffness:** 10-12% improvement in specific modulus over traditional alloys * **Superior Fatigue Performance:** Excellent resistance to crack initiation and propagation * **Improved Damage Tolerance:** Good combination of strength and fracture toughness * **Weldability:** Can be welded using conventional and advanced techniques * **Corrosion Resistance:** Better general and stress corrosion cracking resistance than many 2xxx series alloys **7. Product Applications** 2041 Aluminum Alloy is primarily used in advanced aerospace applications: * **Aerospace Structures:** Upper wing skins, fuselage panels, and floor beams * **Space Applications:** Satellite structures, fuel tanks, and spacecraft components * **Military Aircraft:** Fighter aircraft components and military transport structures * **Commercial Aviation:** Primary and secondary structures in next-generation aircraft * **High-Performance Applications:** Racing components and specialized sporting equipment **8. Availability** 2041 is typically supplied as: * Plate and Sheet * Extrusions * Forgings --- **Disclaimer:** The information provided herein is for reference purposes only. The properties listed are typical and should not be used as design specifications. Actual properties can vary depending on manufacturing processes, lot chemistry, temper, and section size. We recommend consulting with our technical team for specific application requirements.

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 1570 gallon liquid totes Special package is available on request.