2011-T4 Aluminum alloy,Aluminum 2011-T4 alloy,E FORU

### **2011-T4 Aluminum Alloy Product Introduction** **1. Overview** 2011-T4 is a specific temper of the free-machining aluminum-copper alloy 2011, representing a solution heat-treated and naturally aged condition. The "T4" temper designation indicates that the material has been solution heat-treated and then naturally aged to a substantially stable condition. This temper offers a good combination of strength, excellent machinability, and reasonable formability, making it suitable for components requiring both mechanical performance and manufacturing versatility. **2. Chemical Composition (Typical, % by Weight)** The composition maintains the standard 2011 aluminum alloy specification with controlled elements for optimal performance. | Element | Content (%) | |---------|-------------| | **Aluminum (Al)** | Balance | | **Copper (Cu)** | 5.0-6.0 | | **Lead (Pb)** | 0.2-0.6 | | **Bismuth (Bi)** | 0.2-0.6 | | **Iron (Fe)** | ≤0.7 | | **Silicon (Si)** | ≤0.4 | | **Zinc (Zn)** | ≤0.3 | | **Other Elements (Each)** | ≤0.05 | | **Other Elements (Total)** | ≤0.15 | *Note: The lead and bismuth content ensures excellent free-machining characteristics while copper provides effective age-hardening response.* **3. Physical Properties** | Property | Value | |----------|-------| | **Density** | 2.83 g/cm³ | | **Melting Point** | 540-645°C | | **Electrical Conductivity** | 45% IACS | | **Thermal Conductivity** | 151 W/(m·K) | | **Coefficient of Thermal Expansion** | 23.0 × 10⁻⁶/K (20-100°C) | | **Modulus of Elasticity** | 70 GPa | **4. Mechanical Properties (Typical for T4 Temper)** The T4 temper provides good mechanical properties through solution heat treatment and natural aging. | Property | Value | |----------|-------| | **Tensile Strength** | 290-330 MPa | | **Yield Strength (0.2% Offset)** | 165-200 MPa | | **Elongation (% in 50mm)** | 14-18% | | **Hardness (Brinell)** | 80-95 HB | | **Fatigue Strength** | 115-135 MPa | *Key Characteristics of T4 Temper:* * **Good Strength**: Enhanced mechanical properties through solution treatment * **Excellent Machinability**: Maintains superior free-machining characteristics * **Reasonable Formability**: Suitable for additional forming operations * **Stable Condition**: Naturally aged to substantial stability **5. Product Applications** 2011-T4 aluminum is used in applications requiring good strength combined with excellent machinability and some formability. * **Aircraft Components**: Non-structural aircraft parts and fittings * **Automotive Parts**: Engine components, transmission parts, and fittings * **Precision Fasteners**: Screws, bolts, and mechanical fasteners * **Hydraulic Systems**: Valve components and hydraulic fittings * **Industrial Machinery**: Gears, fittings, and mechanical parts * **Electrical Components**: Connectors and electrical fittings * **Consumer Products**: High-quality mechanical parts and assemblies **6. International Standards** 2011-T4 is recognized under major international standardization systems. | Standard System | Designation | |-----------------|-------------| | **EN (Europe)** | EN AW-2011 T4 | | **ISO** | AlCu6BiPb T4 | | **ASTM (USA)** | ASTM B211 2011 T4 | | **UNS (USA)** | UNS A92011 T4 | | **JIS (Japan)** | A2011 T4 | | **GB (China)** | 2A11 T4 | --- **Summary** **2011-T4 Aluminum Alloy** represents a **solution heat-treated and naturally aged temper** that provides a **balanced combination of good strength, excellent machinability, and adequate formability**. The T4 condition offers improved mechanical properties compared to annealed tempers while maintaining the exceptional free-machining characteristics inherent to the 2011 base alloy. The solution heat treatment followed by natural aging results in enhanced strength characteristics while preserving reasonable formability for additional manufacturing operations. This makes 2011-T4 particularly valuable for aircraft components, automotive parts, precision fasteners, and applications requiring both excellent machinability and good mechanical performance with some formability. The temper's stability and consistent performance, combined with superior chip formation during machining, establish it as a reliable choice for various applications in aerospace, automotive, and general engineering industries where a balance between strength, machinability, and manufacturing flexibility is required.

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 1508 gallon liquid totes Special package is available on request.