2111B Aluminum alloy,Aluminum 2111B alloy,E FORU

### **Product Datasheet: 2111B Aluminum Alloy** --- #### **1. Overview** 2111B Aluminum Alloy is a premium free-machining aluminum-copper alloy representing the highest grade within the 2111 series. This advanced variant features optimized composition and processing to deliver exceptional machinability, superior surface finish quality, and enhanced consistency for the most demanding precision machining applications. The "B" designation signifies the highest quality level with tighter compositional control and improved mechanical properties for critical components in automotive, aerospace, and precision engineering industries. --- #### **2. International Standards** - **UNS**: Not assigned (Premium European variant) - **EN**: EN 573-3 (Aluminum and aluminum alloys - Chemical composition and form of wrought products) - **DIN**: DIN 1745-2 (Wrought Aluminum and Aluminum Alloys - Chemical Composition) - **AFNOR**: A-U5GT (French Standard - Premium Grade) - **ISO**: ISO 6362-2 (Wrought Aluminum and Aluminum Alloy Extruded Rod/Bar) --- #### **3. Chemical Composition (Weight %)** | Element | Content (%) | |---------|-------------| | **Aluminum (Al)** | Balance | | **Copper (Cu)** | 5.2–5.8 | | **Bismuth (Bi)** | 0.35–0.65 | | **Lead (Pb)** | 0.25–0.55 | | **Iron (Fe)** | ≤ 0.10 | | **Silicon (Si)** | ≤ 0.10 | | **Manganese (Mn)** | ≤ 0.05 | | **Magnesium (Mg)** | ≤ 0.03 | | **Zinc (Zn)** | ≤ 0.05 | | **Titanium (Ti)** | ≤ 0.05 | | **Other Elements** | ≤ 0.02 each | | **Total Others** | ≤ 0.08 | --- #### **4. Physical Properties** | Property | Value | |----------|-------| | **Density** | 2.84 g/cm³ (0.1025 lb/in³) | | **Melting Range** | ~545–645°C (1010–1190°F) | | **Electrical Conductivity** | ~48–52 % IACS | | **Thermal Conductivity** | 170–190 W/m·K | | **Coefficient of Thermal Expansion** | 23.1–23.9 × 10⁻⁶/°C (20–100°C) | | **Modulus of Elasticity** | 71.0–73.0 GPa (10,300–10,600 ksi) | | **Specific Heat Capacity** | 900 J/kg·K | --- #### **5. Mechanical Properties (T6 Temper - Premium Grade)** | Property | Typical Value | |----------|---------------| | **Tensile Strength (Ultimate)** | 340–390 MPa (49–57 ksi) | | **Tensile Yield Strength (0.2% Offset)** | 260–310 MPa (38–45 ksi) | | **Elongation at Break** | 14–22% | | **Reduction of Area** | 50–65% | | **Shear Strength** | 220–260 MPa (32–38 ksi) | | **Hardness (Brinell)** | 95–110 HB | | **Fatigue Strength** | 120–140 MPa (17–20 ksi) | | **Machinability Rating** | Outstanding (95–100% of free-cutting brass) | --- #### **6. Key Characteristics & Advantages** - **Premium Machinability**: Best-in-class chip formation and surface finish - **Exceptional Consistency**: Lot-to-lot uniformity for stable production - **Superior Surface Quality**: Mirror-like finishes achievable - **Extended Tool Life**: Significant reduction in tool wear - **Enhanced Dimensional Stability**: Minimal distortion during machining - **Optimized Chip Control**: Perfect chip breaking for automation - **Stringent Quality Control**: 100% ultrasonic testing available --- #### **7. Product Applications** - **Aerospace Components**: Critical flight control parts and instruments - **Medical Devices**: Surgical instruments and implant components - **Precision Automotive**: Fuel injection systems and transmission parts - **Electronics Manufacturing**: Connector components and shielding parts - **Optical Industry**: Precision mounts and optical components - **Watch Manufacturing**: High-end watch movements and components --- #### **8. Available Forms** - Precision Centerless Ground Bars - Cold Drawn and Polished Rods - CNC Machining Blanks - Custom Extruded Profiles - Wire for Swiss-type Automatics - Special Tolerance Stock --- #### **9. Premium Quality Features** - **Metallurgical Purity**: Reduced inclusion content for better machinability - **Grain Structure**: Controlled fine-grained microstructure - **Surface Integrity**: Superior surface finish in as-supplied condition - **Dimensional Precision**: Tighter diameter and straightness tolerances - **Certification**: Full material traceability with enhanced documentation - **Technical Support**: Application engineering and machining optimization - **Custom Processing**: Tailored heat treatment and surface conditions --- **Disclaimer**: The information presented represents premium grade material characteristics. Actual properties may vary with specific processing parameters. For technical specifications and application engineering support for premium grade 2111B, please contact our technical service department for complete documentation and certification.

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 1596 gallon liquid totes Special package is available on request.