2124-T351 Aluminum alloy,Aluminum 2124-T351 alloy,E FORU

### **Product Datasheet: 2124-T351 Aluminum Alloy** --- #### **1. Overview** 2124-T351 Aluminum Alloy is a high-strength aluminum-copper-magnesium alloy supplied in the T351 temper (solution heat-treated, stress-relieved by stretching, and naturally aged). This specific temper provides an excellent combination of high strength, good damage tolerance, and improved stress corrosion cracking resistance. As a premium aerospace-grade material, 2124-T351 is specifically designed for applications requiring superior fracture toughness and fatigue performance in thick plate sections, making it ideal for critical aircraft structural components. --- #### **2. International Standards** - **UNS**: UNS A92124 - **ASTM**: ASTM B209 (Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate) - **AMS**: AMS 4100 (Aerospace Material Specification) - **AA (Aluminum Association)**: AA 2124 - **ISO**: ISO 6361-2 (Wrought Aluminum and Aluminum Alloy Sheet, Strip and Plate) --- #### **3. Chemical Composition (Weight %)** | 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 | | **Zinc (Zn)** | ≤ 0.25 | | **Chromium (Cr)** | ≤ 0.10 | | **Titanium (Ti)** | ≤ 0.15 | | **Other Elements** | ≤ 0.05 each | | **Total Others** | ≤ 0.15 | --- #### **4. Physical Properties** | Property | Value | |----------|-------| | **Density** | 2.78–2.80 g/cm³ (0.100–0.101 lb/in³) | | **Melting Range** | ~550–640°C (1020–1185°F) | | **Electrical Conductivity** | ~34–38 % IACS | | **Thermal Conductivity** | 115–135 W/m·K | | **Coefficient of Thermal Expansion** | 22.8–23.8 × 10⁻⁶/°C (20–100°C) | | **Modulus of Elasticity** | 71.0–73.0 GPa (10,300–10,600 ksi) | --- #### **5. Mechanical Properties (T351 Temper Condition)** | Property | Typical Value | |----------|---------------| | **Tensile Strength (Ultimate)** | 400–460 MPa (58–67 ksi) | | **Tensile Yield Strength (0.2% Offset)** | 270–330 MPa (39–48 ksi) | | **Elongation at Break** | 12–18% | | **Compressive Yield Strength** | 280–340 MPa (41–49 ksi) | | **Shear Strength** | 240–280 MPa (35–41 ksi) | | **Bearing Yield Strength** | 520–580 MPa (75–84 ksi) | | **Fracture Toughness (L-T方向)** | 30–36 MPa√m | | **Fatigue Strength** | 140–170 MPa (20–25 ksi) | --- #### **6. Key Characteristics & Advantages** - **Excellent Damage Tolerance**: Superior fracture toughness in thick sections - **Good Stress Corrosion Resistance**: T351 temper provides improved SCC resistance - **High Strength-to-Weight Ratio**: Premium mechanical properties for aerospace applications - **Natural Aging Stability**: Properties stabilize after natural aging period - **Thick Section Capability**: Maintains consistent properties in heavy plate - **Stress-Relieved**: Stretching after solution treatment minimizes residual stresses - **Aerospace Proven**: Extensive use in critical aircraft structures --- #### **7. Product Applications** - **Aircraft Structures**: Wing skins, fuselage panels, and bulkheads - **Aerospace Components**: Spars, ribs, and other primary structural elements - **Military Aircraft**: Critical load-bearing components - **Space Vehicle Structures**: Launch vehicle components and satellite structures - **Helicopter Components**: Main rotor components and airframe structures - **Defense Applications**: Armored vehicle components and military hardware --- #### **8. Available Forms** - Plate (6–150 mm thickness) - Sheet (1.0–6.0 mm thickness) - Forging Stock --- #### **9. Processing and Quality Assurance** - **Machining**: Good machinability with proper techniques - **Forming**: Can be formed in T351 condition with appropriate methods - **Heat Treatment**: May be further aged for specific property requirements - **Quality Control**: Stringent testing including ultrasonic inspection - **Certification**: Full traceability and aerospace quality documentation - **Storage**: Proper handling to maintain temper properties --- **Disclaimer**: The information presented is typical and for reference only. Actual properties may vary with processing, size, and specific manufacturing conditions. For critical aerospace applications, contact our technical service team for specific data and certification requirements.

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 1599 gallon liquid totes Special package is available on request.