1460 Alloy ,hot rolled sheet，E FORU

### **Product Datasheet: 1460 Aluminum-Lithium Alloy, Hot Rolled Sheet** **1. General Overview** 1460 Aluminum-Lithium Alloy is a advanced Russian-origin alloy belonging to the Al-Cu-Li system. As a hot-rolled sheet product, it is specifically engineered for aerospace and aviation applications where weight reduction is critical. The addition of Lithium (Li), the lightest metallic element, significantly reduces the alloy's density while simultaneously increasing its stiffness. This combination of low density, high strength, and excellent cryogenic properties makes 1460 a premium material for lightweight structural components. **2. International Standards** 1460 alloy is primarily covered by Russian and aerospace-specific standards. It is also recognized within broader material databases. * **Russian Standards:** **ГОСТ (GOST) 4784-97** (Aluminum and aluminum alloy grades) * **Aerospace Material Specifications:** **AMS** (While not as common as Western alloys, it may be procured to similar proprietary or customer-specific AMS-like specifications.) * **UNS:** UNS A91460 * **Note:** This alloy is not typically standardized under ASTM or common EN standards, as it was developed as part of the Soviet/Russian aerospace program. **3. Chemical Composition (Weight %)** The composition is precisely controlled to achieve the optimal balance of properties, with Lithium and Copper as the primary alloying elements. | Element | Content (%) | | :--- | :--- | | **Lithium (Li)** | 1.8 - 2.3 | | **Copper (Cu)** | 2.5 - 3.3 | | **Zirconium (Zr)** | 0.08 - 0.14 | | **Magnesium (Mg)** | ≤ 0.10 | | **Silicon (Si)** | ≤ 0.20 | | **Iron (Fe)** | ≤ 0.20 | | **Zinc (Zn)** | ≤ 0.10 | | **Manganese (Mn)** | ≤ 0.10 | | **Titanium (Ti)** | ≤ 0.10 | | **Other Impurities** | ≤ 0.15 each; ≤ 0.05 total | | **Aluminum (Al)** | Balance | *Note: Zirconium (Zr) is added to form fine dispersoids that control grain growth and improve toughness.* **4. Physical Properties** The physical properties of 1460 alloy are marked by its low density and high stiffness. | Property | Value / Description | | :--- | :--- | | **Density** | ~ 2.57 g/cm³ (0.093 lb/in³) *Approx. 8-10% lower than standard 2xxx series alloys* | | **Melting Range** | ~ 600 - 655 °C (1112 - 1211 °F) | | **Coefficient of Thermal Expansion (20-100°C)** | 22.0 - 23.0 x 10⁻⁶/°C | | **Thermal Conductivity** | ~ 100 - 120 W/m·K | | **Modulus of Elasticity** | ~ 78 - 80 GPa (11.3 - 11.6 x 10⁶ psi) *Higher than conventional aluminum alloys* | **5. Mechanical Properties (Typical for Hot Rolled Sheet & Solution Treated Condition)** Hot-rolled sheet is typically supplied in a solution-treated and sometimes stretched condition, ready for aging. Properties are highly dependent on the final temper (aging treatment). | Property | Typical Value (Temper ~T3/T8) | | :--- | :--- | | **Tensile Strength** | 480 - 550 MPa (70,000 - 80,000 psi) | | **Yield Strength (0.2% Offset)** | 400 - 480 MPa (58,000 - 70,000 psi) | | **Elongation at Break** | 6 - 10 % | | **Hardness, Brinell** | ~ 130 - 150 HB | *Note: These are representative values. Specific properties must be confirmed based on the exact temper and processing parameters.* **6. Key Characteristics & Advantages** * **Low Density & High Stiffness:** The primary advantage is its exceptional strength-to-weight and stiffness-to-weight ratios, leading to significant weight savings in aerospace structures. * **Excellent Cryogenic Toughness:** Retains good mechanical properties and toughness at very low temperatures, making it suitable for liquid oxygen and hydrogen fuel tanks in launch vehicles. * **Good Weldability:** Can be successfully welded using techniques like TIG and MIG, which is a key requirement for tank and structural fabrication. * **Fatigue Resistance:** Offers good fatigue performance in properly designed structures. **7. Product Applications** 1460 hot-rolled sheet is exclusively used in high-performance, weight-critical applications, primarily in the aerospace and space industries. * **Aerospace Structures:** * Skin panels for military aircraft and helicopters * Internal fuselage and wing structures * **Space Launch Vehicles & Satellites:** * **Cryogenic Fuel Tanks:** Its primary application is for liquid oxygen and hydrogen propellant tanks in rockets (e.g., used in Russian launch vehicles). * Satellite structural components and fuel cylinders * **Other High-Performance Applications:** * Racing car chassis and components * Military and strategic equipment **8. Available Forms & Processing** * **Primary Form:** Hot Rolled Sheet / Plate. * **Common Tempers:** Typically supplied in solution-treated (W), naturally aged (T3/T4 type), or artificially aged (T8 type) tempers. * **Fabrication:** Can be machined and formed, though it requires different parameters than conventional aluminum alloys. Heat treatment after forming is critical to achieve final properties. --- **Disclaimer:** The information provided is for reference purposes. 1460 alloy is a specialized material whose properties are highly dependent on its specific manufacturing history and thermal-mechanical treatment. For any critical application, all specifications and properties must be verified and qualified with the material supplier and relevant engineering authorities.

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 2276 gallon liquid totes Special package is available on request.