2026 Aluminum alloy,Aluminum 2026 alloy,E FORU

### **Aluminum 2026 Alloy Product Introduction** **Overview** 2026 Aluminum Alloy is a high-strength aluminum-copper-magnesium alloy developed primarily for aerospace and defense applications. As part of the 2000 series (Al-Cu alloys), it offers an excellent combination of high strength, good damage tolerance, and improved corrosion resistance compared to some other alloys in its class. The alloy is typically supplied in various tempers to meet specific application requirements. --- #### **1. Chemical Composition** | Element | Content (%) | |---------|-------------| | **Aluminum (Al)** | Balance | | **Copper (Cu)** | 3.6 - 4.4 | | **Magnesium (Mg)** | 1.3 - 1.8 | | **Manganese (Mn)** | 0.50 - 1.0 | | **Silver (Ag)** | 0.05 - 0.20 | | **Zinc (Zn)** | 0.05 - 0.20 | | **Zirconium (Zr)** | 0.05 - 0.15 | | **Iron (Fe)** | ≤ 0.12 | | **Silicon (Si)** | ≤ 0.10 | | **Other Elements** | ≤ 0.15 total | --- #### **2. Physical Properties** | Property | Value / Description | |----------|---------------------| | **Density** | 2.79 g/cm³ (0.101 lb/in³) | | **Melting Range** | 510°C - 640°C (950°F - 1184°F) | | **Electrical Conductivity** | 32-38% IACS | | **Thermal Conductivity** | 125-135 W/m·K | | **Coefficient of Thermal Expansion** | 23.3 × 10⁻⁶/°C (20-100°C) | | **Modulus of Elasticity** | 72.5 GPa (10,500 ksi) | | **Poisson's Ratio** | 0.33 | --- #### **3. Mechanical Properties** **Typical Mechanical Properties (T39 Temper):** | Property | Value | |----------|-------| | **Tensile Strength** | 480-520 MPa (70-75 ksi) | | **Yield Strength (0.2% Offset)** | 420-460 MPa (61-67 ksi) | | **Elongation in 2 inches** | 8-12% | | **Shear Strength** | 280-310 MPa (41-45 ksi) | | **Fatigue Strength** | 150 MPa (22 ksi) | | **Brinell Hardness** | 135-145 HB | | **Fracture Toughness** | 25-30 MPa√m | --- #### **4. International Standards** | Standard System | Designation | Product Form | |-----------------|-------------|--------------| | **ASTM** | ASTM B209 | Sheet & Plate | | **AMS** | AMS 4255 | Sheet | | **AMS** | AMS 4256 | Plate | | **EN** | EN AW-2026 [T39] | Sheet/Plate | | **ISO** | ISO 6361 | Wrought Products | --- #### **5. Product Applications** **Aerospace Applications:** - Aircraft fuselage skins - Wing panels and structures - Bulkheads and frames - Stringers and longerons - Space vehicle components **Defense Applications:** - Military aircraft structures - Missile components - Armored vehicle parts - Defense system structures **Transportation Applications:** - High-speed train components - Racing car chassis - Marine vessel structures - Automotive safety components --- #### **6. Key Advantages & Considerations** **Advantages:** - ✅ **High Strength-to-Weight Ratio** - ✅ **Excellent Damage Tolerance** - ✅ **Good Fatigue Resistance** - ✅ **Improved Corrosion Resistance** vs 2024 alloy - ✅ **Good Stress-Corrosion Cracking Resistance** - ✅ **Superior Fracture Toughness** **Considerations:** - ⚠️ **Requires Corrosion Protection** for harsh environments - ⚠️ **Limited Weldability** - requires special techniques - ⚠️ **Higher Cost** than conventional alloys - ⚠️ **Specialized Heat Treatment** requirements - ⚠️ **Limited Availability** in some markets --- **Heat Treatment Characteristics** **Typical Tempers Available:** - T3: Solution heat-treated, cold worked, naturally aged - T39: Solution heat-treated, cold worked, naturally aged (specific to 2026) - T8: Solution heat-treated, cold worked, artificially aged **Heat Treatment Process:** 1. Solution heat treatment: 490-500°C (914-932°F) 2. Quenching: Rapid water quench 3. Aging: Natural or artificial aging based on temper requirements --- **Machining and Fabrication** **Machinability:** Good (similar to other 2000-series alloys) **Forming:** Requires annealing for complex forming operations **Joining:** Prefer mechanical fastening over welding **Surface Treatment:** Excellent response to anodizing and coating --- **Corrosion Protection** **Recommended Protection Methods:** - Alclad versions available - Anodizing (chromic or sulfuric acid) - Chemical conversion coatings - Paint and primer systems - Regular inspection and maintenance --- **Conclusion** 2026 Aluminum Alloy represents an advanced evolution in aluminum-copper alloys, offering an excellent balance of high strength, damage tolerance, and corrosion resistance. Its optimized chemical composition, including strategic additions of silver and zirconium, provides enhanced mechanical properties that make it particularly suitable for critical aerospace and defense applications. While requiring proper corrosion protection and specialized manufacturing techniques, 2026 alloy delivers reliable performance in demanding environments where both structural integrity and damage tolerance are essential. The alloy continues to gain acceptance in applications where its superior combination of properties provides significant advantages over traditional aluminum alloys.

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 1552 gallon liquid totes Special package is available on request.