2124-O Aluminum alloy,Aluminum 2124-O alloy,E FORU

### **Product Datasheet: 2124-O Aluminum Alloy** --- #### **1. Overview** 2124-O Aluminum Alloy is a high-strength aluminum-copper alloy supplied in the annealed (O) temper condition. As the annealed variant of the premium aerospace alloy 2124, this material offers maximum formability and workability while maintaining the excellent damage tolerance characteristics of the 2124 series. The O temper condition provides the softest state of the alloy, making it ideal for complex forming operations before subsequent heat treatment to higher strength tempers for final application. --- #### **2. International Standards** - **UNS**: UNS A92124 - **ASTM**: ASTM B209 (Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate) - **AMS**: AMS 4101 (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** | ~35–40 % IACS | | **Thermal Conductivity** | 120–140 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 (O Temper Condition)** | Property | Typical Value | |----------|---------------| | **Tensile Strength (Ultimate)** | 180–230 MPa (26–33 ksi) | | **Tensile Yield Strength (0.2% Offset)** | 75–125 MPa (11–18 ksi) | | **Elongation at Break** | 15–22% | | **Compressive Yield Strength** | 80–130 MPa (12–19 ksi) | | **Shear Strength** | 110–150 MPa (16–22 ksi) | | **Hardness (Brinell)** | 45–65 HB | | **Bearing Yield Strength** | 120–170 MPa (17–25 ksi) | --- #### **6. Key Characteristics & Advantages** - **Maximum Formability**: Excellent for complex shaping and forming operations - **Superior Workability**: Easy to machine, cut, and form in annealed condition - **Age Hardenable**: Can be heat treated to T3, T4, or T8 tempers for high strength - **Good Damage Tolerance Base**: Inherits 2124 series' excellent fracture toughness potential - **Uniform Properties**: Consistent mechanical characteristics throughout - **Thermal Process Compatibility**: Suitable for various heat treatment cycles - **Aerospace Heritage**: Backed by 2124's proven performance in aircraft structures --- #### **7. Product Applications** - **Aerospace Components**: Complex formed parts requiring subsequent heat treatment - **Prototype Development**: Forming trials and manufacturing process development - **Aircraft Structures**: Components formed before final heat treatment - **Custom Fabrications**: Parts requiring extensive forming operations - **Tooling Applications**: Forming dies and manufacturing fixtures - **Research and Development**: Material testing and process development --- #### **8. Available Forms** - Sheet (0.5–6.0 mm thickness) - Plate (6–150 mm thickness) - Forging Stock - Custom Shapes and Blanks --- #### **9. Processing and Heat Treatment** - **Forming Operations**: Best formability in O temper for complex shapes - **Machining**: Excellent machinability in soft condition - **Heat Treatment**: Requires solution treatment and aging for high strength - **Solution Treatment**: Typically 490–500°C (915–930°F) followed by quenching - **Aging Options**: Can be naturally aged (T4) or artificially aged (T6, T8) - **Quality Control**: Strict process control for aerospace certification - **Final Properties**: Develops superior strength after proper heat treatment --- **Disclaimer**: The information presented is typical and for reference only. Actual properties may vary with processing and subsequent heat treatment. For critical applications, contact our technical service team for specific data and heat treatment 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 1598 gallon liquid totes Special package is available on request.