2029 Aluminum alloy,Aluminum 2029 alloy,E FORU

# **Aluminum 2029 Alloy Product Introduction** ## **Overview** 2029 Aluminum Alloy is a high-strength aluminum-copper-lithium alloy developed for advanced aerospace applications. As a third-generation Al-Cu-Li alloy, it offers an exceptional combination of high strength, low density, excellent corrosion resistance, and improved damage tolerance compared to conventional aluminum alloys. This alloy represents significant advancements in aluminum-lithium technology for weight-critical structures. --- ## **1. Chemical Composition** | Element | Content (%) | |---------|-------------| | **Aluminum (Al)** | Balance | | **Copper (Cu)** | 2.6 - 3.4 | | **Lithium (Li)** | 1.0 - 1.6 | | **Magnesium (Mg)** | 0.15 - 0.55 | | **Manganese (Mn)** | 0.10 - 0.50 | | **Zirconium (Zr)** | 0.05 - 0.12 | | **Silver (Ag)** | 0.25 - 0.60 | | **Zinc (Zn)** | ≤ 0.10 | | **Iron (Fe)** | ≤ 0.08 | | **Silicon (Si)** | ≤ 0.06 | | **Other Elements** | ≤ 0.15 total | --- ## **2. Physical Properties** | Property | Value / Description | |----------|---------------------| | **Density** | 2.68 g/cm³ (0.097 lb/in³) | | **Melting Range** | 535°C - 655°C (995°F - 1211°F) | | **Electrical Conductivity** | 28-33% IACS | | **Thermal Conductivity** | 95-105 W/m·K | | **Coefficient of Thermal Expansion** | 22.8 × 10⁻⁶/°C (20-100°C) | | **Modulus of Elasticity** | 78.0 GPa (11,300 ksi) | | **Poisson's Ratio** | 0.33 | --- ## **3. Mechanical Properties** **Typical Mechanical Properties (T8 Temper):** | Property | Value | |----------|-------| | **Tensile Strength** | 520-570 MPa (75-83 ksi) | | **Yield Strength (0.2% Offset)** | 470-520 MPa (68-75 ksi) | | **Elongation in 2 inches** | 6-10% | | **Shear Strength** | 310-340 MPa (45-49 ksi) | | **Fatigue Strength** | 180 MPa (26 ksi) | | **Brinell Hardness** | 145-155 HB | | **Fracture Toughness** | 28-35 MPa√m | | **Specific Stiffness** | 29.1 GPa·cm³/g | --- ## **4. International Standards** | Standard System | Designation | Product Form | |-----------------|-------------|--------------| | **ASTM** | ASTM B209 | Sheet, Plate | | **AMS** | AMS 4413 | Plate | | **AMS** | AMS 4414 | Sheet | | **EN** | EN AW-2029 | Sheet, Plate | | **ISO** | ISO 6361 | Wrought Products | --- ## **5. Product Applications** **Aerospace Primary Structures:** - Aircraft fuselage skins and stringers - Upper and lower wing skins - Space launch vehicle fuel tanks - Satellite structural components - Helicopter rotor components **Commercial Aviation:** - Commercial aircraft fuselage sections - Wing planks and ribs - Empennage components - Floor beams and supports - Door and window frames **Defense Applications:** - Military aircraft structures - Missile airframes - UAV structural components - Radar antenna structures - Military transport aircraft components **Space Applications:** - Rocket fuel tanks and intertanks - Satellite bus structures - Space telescope frameworks - Launch vehicle adapters - Spacecraft primary structures --- ## **6. Key Advantages & Considerations** **Advantages:** - ✅ **7-8% Lower Density** than conventional aluminum alloys - ✅ **Higher Specific Stiffness** and strength - ✅ **Excellent Corrosion Resistance** - ✅ **Superior Fatigue Performance** - ✅ **Good Weldability** compared to other Al-Cu-Li alloys - ✅ **Improved Damage Tolerance** **Considerations:** - ⚠️ **Premium Material Cost** - ⚠️ **Specialized Processing Requirements** - ⚠️ **Limited Supplier Base** - ⚠️ **Lithium Content Requires Special Handling** - ⚠️ **Complex Heat Treatment Requirements** --- ## **Heat Treatment Characteristics** **Standard Tempers Available:** - T3: Solution heat-treated, cold worked, naturally aged - T8: Solution heat-treated, cold worked, artificially aged - T81: Solution heat-treated, stretched 1-3%, artificially aged - T87: Solution heat-treated, stretched 6-8%, artificially aged **Typical T8 Heat Treatment:** - Solution Treatment: 530-540°C (986-1004°F) - Quenching: Controlled water quench or forced air - Aging: 150-165°C (302-329°F) for 24-36 hours --- ## **Manufacturing Characteristics** **Machinability:** Good with proper techniques **Forming:** Requires specialized processes **Welding:** Compatible with conventional and friction stir welding **Surface Treatment:** Excellent response to anodizing and coatings --- ## **Quality Assurance** **Stringent Requirements:** - Chemical composition certification - Mechanical property verification - Ultrasonic inspection - Fracture toughness testing - Corrosion resistance validation - Microstructural controls --- ## **Conclusion** 2029 Aluminum Alloy represents a significant advancement in aluminum-lithium technology, offering aerospace engineers an optimal balance of low density, high strength, and excellent damage tolerance. The addition of lithium provides substantial weight savings while maintaining good corrosion resistance and manufacturability. Although requiring specialized processing and commanding premium costs, 2029 delivers exceptional value in weight-critical aerospace applications where every kilogram saved translates to significant operational benefits. Its proven performance in commercial and military aircraft, coupled with growing adoption in space applications, positions 2029 as a key material for next-generation aerospace structures seeking maximum efficiency and performance.

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 1558 gallon liquid totes Special package is available on request.