Alclad 2024-T361 Aluminum alloy,Aluminum 2024-T361 alloy,E FORU

### **Alclad 2024-T3 Aluminum Alloy Product Introduction** **Overview** Alclad 2024-T3 is a premier aerospace aluminum alloy that combines the high strength of **2024 aluminum** in its T3 temper with the superior corrosion protection of a metallurgically bonded pure aluminum cladding. This composite material consists of a high-strength 2024 core, which has been solution heat-treated, cold-worked, and naturally aged to the T3 condition, protected on both surfaces by a thin layer of anodic cladding. It represents the finished, ready-to-use form of one of the most important structural materials in aviation history. --- #### **1. Chemical Composition** The material features a two-layer structure with distinct chemical compositions: **Core Material: 2024-T3 Alloy** | Element | Content (%) | |---------|-------------| | **Aluminum (Al)** | Balance | | **Copper (Cu)** | 3.8 - 4.9 | | **Magnesium (Mg)** | 1.2 - 1.8 | | **Manganese (Mn)** | 0.30 - 0.9 | | **Iron (Fe)** | ≤ 0.20 | | **Silicon (Si)** | ≤ 0.15 | **Cladding Material** - **Alloy:** 1230 or similar high-purity aluminum (≥99.30% Al) - **Thickness:** Typically 2.5% to 5% of total thickness per side - **Function:** Sacrificial corrosion protection --- #### **2. Physical Properties** | Property | Value / Description | |----------|---------------------| | **Density** | 2.78 g/cm³ (0.100 lb/in³) | | **Melting Range** | 500°C - 638°C (930°F - 1180°F) | | **Electrical Conductivity** | ~30-35% IACS (core dependent) | | **Thermal Conductivity** | 121 W/m·K | | **Coefficient of Thermal Expansion** | 23.2 × 10⁻⁶/°C (20-100°C) | --- #### **3. Mechanical Properties** The T3 temper provides an excellent combination of strength and damage tolerance. | Property | Value | |----------|-------| | **Tensile Strength** | 440-470 MPa (64-68 ksi) | | **Yield Strength (0.2% Offset)** | 290-320 MPa (42-46 ksi) | | **Elongation (50mm)** | 12-18% | | **Hardness (Brinell)** | 120-130 HB | *Note: The cold-working (stretching) in the T3 temper provides better dimensional stability and slightly higher strength than the T4 temper.* --- #### **4. International Standards** Alclad 2024-T3 is recognized under these major international standards: | Standard System | Designation | Form | |-----------------|-------------|------| | **AMS** | AMS 4037 | Sheet | | **ASTM** | ASTM B209 | Sheet & Plate | | **MIL** | MIL-DTL-6075 | Sheet | | **EN** | EN AW-2024A [T3] | Sheet | --- #### **5. Product Applications** Alclad 2024-T3 is the material of choice for critical aerospace structures where strength, fatigue resistance, and corrosion protection are paramount. **Primary Applications:** - **Aircraft Structures:** - Fuselage skins and panels - Lower wing surfaces - Structural bulkheads - Wing ribs and stringers - **Aerospace Components:** - Aircraft cowlings - Access doors and panels - Military vehicle structures - **Other Applications:** - High-performance automotive components - Racing car chassis elements - Critical structural applications requiring fatigue resistance --- #### **6. Key Advantages & Considerations** **Advantages:** - ✅ **Excellent Strength-to-Weight Ratio:** Superior specific strength for weight-critical applications - ✅ **Built-in Corrosion Protection:** Alclad layer sacrificially protects the vulnerable 2024 core - ✅ **Superior Fatigue Performance:** Excellent resistance to crack initiation - ✅ **Good Damage Tolerance:** Resists crack propagation under cyclic loading - ✅ **Proven Reliability:** Extensive history in aerospace applications **Considerations:** - ⚠️ **Limited Formability:** In T3 temper, formability is restricted compared to -O temper; complex shapes may require special techniques - ⚠️ **Not Weldable:** Unsuitable for fusion welding due to hot cracking susceptibility in heat-affected zone - ⚠️ **Stress-Corrosion Cracking Risk:** Thick sections may be susceptible to SCC in short transverse direction - ⚠️ **Reduced Strength:** Cladding slightly reduces overall strength compared to bare 2024-T3 of equivalent thickness --- **Conclusion** Alclad 2024-T3 Aluminum Alloy represents the optimal combination of mechanical performance and environmental durability for aerospace structures. The synergistic combination of the high-strength 2024 core in its stable T3 condition with the sacrificial protection of the pure aluminum cladding creates a material that has become the standard for aircraft primary structures. While it requires mechanical fastening for assembly and careful handling during manufacturing, its proven performance in countless aircraft applications confirms its status as an indispensable engineering material where human safety and structural reliability are paramount.

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 1534 gallon liquid totes Special package is available on request.