2011-T8 Aluminum alloy,Aluminum 2011-T8 alloy,E FORU

### **2011-T8 Aluminum Alloy Product Introduction** **1. Overview** 2011-T8 is a specific temper of the free-machining aluminum-copper alloy 2011, representing a solution heat-treated, cold worked, and artificially aged condition. The "T8" temper designation indicates that the material has been solution heat-treated followed by cold working and artificial aging to achieve enhanced mechanical properties and improved stress corrosion resistance. This temper offers an optimal combination of high strength, excellent machinability, and superior 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 enables effective precipitation hardening through artificial aging after cold working.* **3. Physical Properties** | Property | Value | |----------|-------| | **Density** | 2.83 g/cm³ | | **Melting Point** | 540-645°C | | **Electrical Conductivity** | 42% IACS | | **Thermal Conductivity** | 145 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 T8 Temper)** The T8 temper provides enhanced mechanical properties through combined cold working and artificial aging. | Property | Value | |----------|-------| | **Tensile Strength** | 400-440 MPa | | **Yield Strength (0.2% Offset)** | 310-350 MPa | | **Elongation (% in 50mm)** | 7-10% | | **Hardness (Brinell)** | 105-120 HB | | **Fatigue Strength** | 140-160 MPa | | **Shear Strength** | 240-270 MPa | *Key Characteristics of T8 Temper:* * **Enhanced Strength**: Superior mechanical properties through cold working and artificial aging * **Excellent Machinability**: Maintains superior free-machining characteristics * **Improved Stress Corrosion Resistance**: Better resistance to stress corrosion cracking * **Superior Dimensional Stability**: Optimal stability for precision components **5. Product Applications** 2011-T8 aluminum is used in high-precision applications requiring maximum strength and stability. * **Aerospace Components**: Critical aircraft structural parts and high-strength fasteners * **Precision Instruments**: High-accuracy mechanical components and instrument parts * **Automotive Racing**: High-performance engine and transmission components * **Hydraulic Systems**: High-pressure valve bodies and critical pump parts * **Industrial Machinery**: High-stress gears, precision shafts, and machine components * **Defense Applications**: Critical firearm components and military hardware * **Optical Equipment**: Precision mounting components and optical instruments **6. International Standards** 2011-T8 is recognized under major international standardization systems. | Standard System | Designation | |-----------------|-------------| | **EN (Europe)** | EN AW-2011 T8 | | **ISO** | AlCu6BiPb T8 | | **ASTM (USA)** | ASTM B211 2011 T8 | | **UNS (USA)** | UNS A92011 T8 | | **JIS (Japan)** | A2011 T8 | | **GB (China)** | 2A11 T8 | --- **Summary** **2011-T8 Aluminum Alloy** represents an **enhanced temper** that provides **superior strength characteristics combined with excellent machinability and dimensional stability**. The T8 condition achieves optimal mechanical properties through solution heat treatment followed by cold working and artificial aging, offering improved stress corrosion resistance compared to T6 temper. This combination makes 2011-T8 particularly valuable for aerospace structural components, precision instruments, high-performance automotive parts, and applications demanding both maximum mechanical strength and exceptional dimensional stability. The additional cold working process in the T8 temper provides enhanced strength and improved stress corrosion resistance, making it the preferred choice for critical applications where reliability under stress and precision are paramount requirements. Its proven performance in demanding environments establishes it as the ultimate choice for high-stress, high-precision applications across aerospace, precision engineering, defense, and high-performance automotive industries.

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 1510 gallon liquid totes Special package is available on request.