2519 Aluminum alloy,Aluminum 2519 alloy,E FORU

### **Aluminum Alloy 2519 Product Introduction** **Aluminum Alloy 2519** is a high-strength aluminum-copper alloy specifically engineered for advanced armor and aerospace applications. It is renowned for its exceptional **ballistic performance**, superior **weldability**, and excellent **corrosion resistance**, particularly stress corrosion cracking (SCC) resistance. Developed as a successor to alloy 2219 for defense applications, AA2519 offers a unique combination of strength, toughness, and durability under extreme conditions, making it a critical material for modern military vehicles and marine structures. --- #### **1. Chemical Composition** The composition of AA2519 is precisely balanced to achieve its signature blend of strength, weldability, and ballistic resistance. Key elements include (typical values in weight %): | Element | Content (%) | | :--- | :--- | | **Copper (Cu)** | 5.3 - 6.4 | | **Magnesium (Mg)** | 0.05 - 0.40 | | **Manganese (Mn)** | 0.10 - 0.50 | | **Titanium (Ti)** | 0.02 - 0.10 | | **Vanadium (V)** | 0.05 - 0.15 | | **Zirconium (Zr)** | 0.05 - 0.20 | | **Iron (Fe)** | 0.20 max | | **Silicon (Si)** | 0.10 max | | **Zinc (Zn)** | 0.10 max | | **Other Impurities** | each 0.05 max, total 0.15 max | | **Aluminum (Al)** | Balance | * **Copper (Cu)** is the primary strengthening element, forming precipitates during aging. * **Magnesium (Mg)** is carefully controlled at a lower level than in alloys like 5083, which, in combination with copper, contributes to high strength and superior ballistic performance without compromising weldability and SCC resistance. * **Vanadium (V)** and **Zirconium (Zr)** form stable dispersoids that control grain structure and enhance toughness. --- #### **2. Physical Properties** | Property | Value / Description | | :--- | :--- | | **Density** | Approximately 2.82 g/cm³ | | **Melting Range** | ~ 540 - 650 °C | | **Modulus of Elasticity** | Approximately 72 GPa (10.5 x 10⁶ psi) | | **Thermal Conductivity** | ~ 120 W/m·K (at 25°C) | | **Electrical Conductivity** | ~ 34-38% IACS | | **Coefficient of Thermal Expansion** | ~ 22.5 x 10⁻⁶ /K | --- #### **3. Mechanical Properties** Mechanical properties are dependent on temper. The T87 temper is commonly used for armor applications. Typical properties for 2519-T87 are: * **Tensile Ultimate Strength:** 520 - 560 MPa (75 - 81 ksi) * **Tensile Yield Strength:** 470 - 510 MPa (68 - 74 ksi) * **Elongation:** 8 - 12% * **Ballistic Performance:** Excellent, superior to many other aluminum armor alloys like 5083 and 7039. * **Stress-Corrosion Cracking Resistance:** Excellent in the T8-type tempers. --- #### **4. International Standards** Aluminum Alloy 2519 is specified in several key military and aerospace standards. * **AMS:** **AMS 4092** (Aerospace Material Specification for plate and sheet). * **ASTM:** **ASTM B925** (Standard Practice for Fabrication of 2519 Aluminum Alloy Armor Plate). * **U.S. Military Standards:** **MIL-DTL-46099** (Detail Specification for Armor Plate, Aluminum Alloy 2519). This is a primary governing standard for its use in armored vehicles. * **Proprietary Standards:** It is extensively used and specified by defense OEMs (e.g., General Dynamics) for specific vehicle programs. --- #### **5. Product Applications** AA2519's unique property profile makes it the material of choice for demanding defense and marine applications: * **Armored Vehicles:** * **Light Armored Vehicle (LAV) Hulls and Turrets** * **Advanced Amphibious Assault Vehicles (AAAV)** * **Add-on Armor Modules** * **Aerospace & Marine Structures:** * **Marine Superstructures** and ship components requiring weldability and corrosion resistance. * **Aerospace components** that require a high strength-to-weight ratio and good weldability. --- #### **6. Key Advantages** * **Superior Ballistic Protection:** Offers the best ballistic mass efficiency among weldable aluminum armor alloys, providing enhanced protection against projectiles and fragmentation. * **Excellent Weldability:** Can be readily welded using conventional techniques like Gas Metal Arc Welding (GMAW/MIG), with welded joints retaining a high percentage of the base metal strength. * **High Strength:** Provides a high strength-to-weight ratio, contributing to vehicle mobility and payload capacity. * **Outstanding Stress-Corrosion Cracking (SCC) Resistance:** This is a key improvement over other high-strength Al-Cu alloys, ensuring long-term structural integrity in harsh environments. * **Good General Corrosion Resistance:** Performs well in marine atmospheres. **Conclusion** Aluminum Alloy 2519 is a premier, battle-proven material specifically designed for the modern battlefield. Its optimal combination of ballistic resistance, weldability, and corrosion resistance makes it an enabling technology for lightweight, mobile, and survivable armored fighting vehicles. It represents a significant step forward in aluminum armor technology, meeting the stringent demands of 21st-century defense applications.

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 1638 gallon liquid totes Special package is available on request.