2199 Aluminum alloy,Aluminum 2199 alloy,E FORU

### **Product Datasheet: 2199 Aluminum Alloy** --- #### **1. Overview** 2199 Aluminum Alloy is a third-generation aluminum-lithium (Al-Cu-Li) alloy specifically engineered for plate and sheet applications requiring an excellent balance of medium strength, superior damage tolerance, and significant weight reduction. Developed as part of the advanced Al-Li alloy family, 2199 offers improved manufacturing characteristics and better corrosion resistance compared to earlier generations, making it particularly suitable for fuselage and wing applications in commercial and military aircraft. --- #### **2. International Standards** - **UNS**: UNS A92199 - **ASTM**: ASTM B209 (Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate) - **AMS**: AMS 4336 (Aerospace Material Specification) - **AA (Aluminum Association)**: AA 2199 - **ISO**: ISO 6361-2 (Wrought Aluminum and Aluminum Alloy Sheet, Strip and Plate) --- #### **3. Chemical Composition (Weight %)** | Element | Content (%) | |---------|-------------| | **Aluminum (Al)** | Balance | | **Copper (Cu)** | 2.3–2.9 | | **Lithium (Li)** | 1.4–1.8 | | **Magnesium (Mg)** | 0.25–0.8 | | **Zinc (Zn)** | 0.50–1.2 | | **Manganese (Mn)** | 0.10–0.50 | | **Zirconium (Zr)** | 0.08–0.15 | | **Iron (Fe)** | ≤ 0.10 | | **Silicon (Si)** | ≤ 0.08 | | **Titanium (Ti)** | ≤ 0.10 | | **Other Elements** | ≤ 0.05 each | | **Total Others** | ≤ 0.15 | --- #### **4. Physical Properties** | Property | Value | |----------|-------| | **Density** | 2.62–2.64 g/cm³ (0.0946–0.0953 lb/in³) | | **Melting Range** | ~555–650°C (1030–1200°F) | | **Electrical Conductivity** | ~30–34 % IACS | | **Thermal Conductivity** | 85–105 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)** | Property | Typical Value | |----------|---------------| | **Tensile Strength (Ultimate)** | 460–510 MPa (67–74 ksi) | | **Tensile Yield Strength (0.2% Offset)** | 400–450 MPa (58–65 ksi) | | **Elongation at Break** | 10–14% | | **Compressive Yield Strength** | 410–460 MPa (59–67 ksi) | | **Shear Strength** | 270–310 MPa (39–45 ksi) | | **Bearing Yield Strength** | 650–710 MPa (94–103 ksi) | | **Fracture Toughness (L-T方向)** | 33–39 MPa√m | | **Fatigue Strength** | 150–180 MPa (22–26 ksi) | --- #### **6. Key Characteristics & Advantages** - **Excellent Damage Tolerance**: Superior fracture toughness and fatigue performance - **Significant Weight Reduction**: 8–10% lower density than conventional aluminum alloys - **Enhanced Corrosion Resistance**: Excellent stress corrosion cracking resistance - **Good Property Balance**: Optimal combination of strength and toughness - **Reduced Anisotropy**: More uniform properties than earlier Al-Li alloys - **Improved Formability**: Better manufacturing characteristics - **Zinc Addition**: Enhanced precipitation hardening response --- #### **7. Product Applications** - **Aircraft Fuselage Components**: Skin panels and stringers - **Wing Structures**: Lower wing skins and support components - **Commercial Aircraft**: Modern airliner structural applications - **Military Transport**: Military aircraft structural components - **Spacecraft Structures**: Satellite frames and support elements - **Helicopter Components**: Airframe structures and panels --- #### **8. Available Forms** - Plate (10–80 mm thickness) - Sheet (1.0–6.0 mm thickness) - Custom Sized Blanks - Pre-formed Components --- #### **9. Processing and Quality Features** - **Heat Treatment**: Responsive to T8-type aging treatments - **Forming Operations**: Good formability with proper techniques - **Machining**: Standard aluminum machining methods applicable - **Joining**: Suitable for welding and adhesive bonding - **Surface Protection**: Compatible with aerospace coating systems - **Quality Assurance**: Meets aerospace quality standards - **Certification**: Full material traceability available --- **Disclaimer**: The information presented is typical and for reference only. Actual properties may vary with processing, size, and heat treatment. For critical aerospace applications, contact our technical service team for specific data and processing recommendations.

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 1606 gallon liquid totes Special package is available on request.