2039 Aluminum alloy,Aluminum 2039 alloy,E FORU

### **Product Datasheet: 2039 Aluminum Alloy** **1. Overview** 2039 Aluminum Alloy is a premium aluminum-copper-magnesium-silicon alloy within the 2xxx series, specifically designed to offer an optimal combination of high strength, excellent damage tolerance, and superior corrosion resistance. Originally developed for aerospace applications, it exhibits enhanced mechanical properties while maintaining good formability and weldability compared to traditional Al-Cu alloys. The alloy is typically supplied in T3, T4, or T8 type tempers to achieve specific property combinations for demanding applications. **2. International Standards** 2039 Aluminum alloy is recognized under several major international standards systems: * **UNS:** UNS A92039 * **ASTM:** ASTM B209 (Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate) * **AMS:** AMS 4342 (Aerospace Material Specification) * **AA (Aluminum Association):** AA 2039 (The defining standard for composition and temper) *Note: This alloy may also be supplied to other national or proprietary specifications for specific applications.* **3. Chemical Composition (Weight %)** The composition conforms to the limits set by the Aluminum Association (AA). | Element | Content (%) | | :--- | :--- | | **Aluminum (Al)** | Balance | | **Copper (Cu)** | 2.8 - 3.8 | | **Magnesium (Mg)** | 0.10 - 0.6 | | **Manganese (Mn)** | 0.20 - 0.8 | | **Silicon (Si)** | ≤ 0.15 | | **Iron (Fe)** | ≤ 0.20 | | **Zinc (Zn)** | ≤ 0.10 | | **Silver (Ag)** | 0.05 - 0.30 | | **Titanium (Ti)** | 0.02 - 0.10 | | **Zirconium (Zr)** | 0.05 - 0.25 | | **Chromium (Cr)** | ≤ 0.05 | | **Others (Each)** | ≤ 0.05 | | **Others (Total)** | ≤ 0.15 | **4. Physical Properties** | Property | Value / Description | | :--- | :--- | | **Density** | 2.78 - 2.82 g/cm³ (0.100 - 0.102 lb/in³) | | **Melting Range** | ~ 520 - 640 °C (970 - 1185 °F) | | **Electrical Conductivity** | Approximately 35-40% IACS (International Annealed Copper Standard) | | **Thermal Conductivity** | ~ 120 - 140 W/m·K | | **Coefficient of Thermal Expansion** | ~ 22.8 - 23.4 x 10⁻⁶/°C (20-100°C) | **5. Mechanical Properties (Typical Values)** *Properties are highly dependent on temper and product form. The following are typical for sheet/plate in T3/T4 type tempers.* | Property | T3/T4 Type Temper | | :--- | :--- | | **Tensile Strength (Ultimate)** | 420 - 480 MPa (61 - 70 ksi) | | **Tensile Yield Strength (0.2% Offset)** | 260 - 320 MPa (38 - 46 ksi) | | **Elongation at Break** | 15 - 22% | | **Modulus of Elasticity** | 71.0 - 72.0 GPa (10,300 - 10,450 ksi) | | **Compressive Yield Strength** | 270 - 330 MPa (39 - 48 ksi) | | **Fatigue Strength (R=0.1)** | ~ 160 - 190 MPa (23 - 28 ksi) | | **Fracture Toughness (K_IC)** | 30 - 36 MPa√m | **6. Key Characteristics & Advantages** * **High Strength-to-Weight Ratio:** Provides excellent mechanical properties while maintaining low density. * **Superior Damage Tolerance:** Exhibits excellent fracture toughness and fatigue resistance, making it suitable for critical aerospace structures. * **Good Corrosion Resistance:** Shows improved resistance to exfoliation and stress corrosion cracking compared to many other 2xxx series alloys. * **Excellent Weldability:** Can be successfully welded using conventional methods, retaining good properties in the weld zone. * **Good Thermal Stability:** Maintains properties at elevated temperatures better than many competing alloys. **7. Product Applications** 2039 Aluminum Alloy is primarily used in high-performance applications where its combination of properties is critical: * **Aerospace:** Lower wing skins, fuselage panels, bulkheads, and structural components for commercial and military aircraft. * **Defense:** Armored vehicle structures and military platform components. * **Transportation:** Automotive and rail vehicle structures requiring high impact resistance. * **Marine:** High-performance boat and ship components. **8. Availability** 2039 is typically supplied as: * Sheet and Plate * Extruded Profiles * Forging Stock --- **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 1568 gallon liquid totes Special package is available on request.