2011-T3 Aluminum alloy,Aluminum 2011-T3 alloy,E FORU

### **2011-T3 Aluminum Alloy Product Introduction** **1. Overview** 2011-T3 is a specific temper of the free-machining aluminum-copper alloy 2011, representing a solution heat-treated, cold worked, and naturally aged condition. The "T3" temper designation indicates that the material has undergone solution heat treatment followed by cold working to achieve higher strength, and then naturally aged to a substantially stable condition. This temper offers an excellent combination of high strength, superior machinability, and good dimensional stability. **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 precipitation hardening capability.* **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 T3 Temper)** The T3 temper provides enhanced mechanical properties through solution heat treatment and cold working. | Property | Value | |----------|-------| | **Tensile Strength** | 310-350 MPa | | **Yield Strength (0.2% Offset)** | 200-240 MPa | | **Elongation (% in 50mm)** | 12-15% | | **Hardness (Brinell)** | 85-100 HB | | **Fatigue Strength** | 120-140 MPa | *Key Characteristics of T3 Temper:* * **High Strength**: Enhanced mechanical properties through cold working * **Excellent Machinability**: Maintains superior free-machining characteristics * **Good Dimensional Stability**: Naturally aged to substantial stability * **Fine Chip Formation**: Excellent chip breakability during machining operations **5. Product Applications** 2011-T3 aluminum is widely used in applications requiring high strength combined with excellent machinability. * **Aircraft Components**: Structural fittings, aircraft fasteners, and machine parts * **Automotive Parts**: High-strength automotive components and engine parts * **Precision Fasteners**: Screws, bolts, nuts, and high-strength fasteners * **Hydraulic Systems**: Valve components and high-pressure fittings * **Industrial Machinery**: Gears, shafts, and high-stress mechanical parts * **Defense Equipment**: Firearm components and military hardware * **Electronic Components**: Connectors and precision electrical parts **6. International Standards** 2011-T3 is recognized under major international standardization systems. | Standard System | Designation | |-----------------|-------------| | **EN (Europe)** | EN AW-2011 T3 | | **ISO** | AlCu6BiPb T3 | | **ASTM (USA)** | ASTM B211 2011 T3 | | **UNS (USA)** | UNS A92011 T3 | | **JIS (Japan)** | A2011 T3 | | **GB (China)** | 2A11 T3 | --- **Summary** **2011-T3 Aluminum Alloy** represents a **solution heat-treated and cold worked temper** that provides an **optimal balance of high strength, superior machinability, and good dimensional stability**. The T3 condition offers significantly improved mechanical properties compared to annealed tempers while maintaining the exceptional free-machining characteristics inherent to the 2011 base alloy. The combination of solution heat treatment followed by cold working and natural aging results in enhanced strength characteristics with good dimensional stability, making it particularly valuable for aircraft components, high-strength automotive parts, precision fasteners, and applications requiring both excellent machinability and reliable mechanical performance under stress conditions. The temper's stability and consistent performance, combined with superior chip formation during machining, establish it as a preferred choice for demanding applications in aerospace, automotive, and precision engineering industries where high-volume machining and mechanical reliability are critical 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 1507 gallon liquid totes Special package is available on request.