2027 Aluminum alloy,Aluminum 2027 alloy,E FORU

### **Aluminum 2027 Alloy Product Introduction** **Overview** 2027 Aluminum Alloy is a high-strength aluminum-copper-magnesium-silicon alloy developed for superior machinability and good mechanical properties. As part of the 2000 series aluminum alloys, it is specifically engineered for automatic screw machine applications and other high-volume production processes where excellent chip formation and surface finish are critical requirements. --- #### **1. Chemical Composition** | Element | Content (%) | |---------|-------------| | **Aluminum (Al)** | Balance | | **Copper (Cu)** | 2.5 - 3.5 | | **Silicon (Si)** | 0.5 - 1.2 | | **Magnesium (Mg)** | 0.4 - 1.0 | | **Iron (Fe)** | ≤ 0.8 | | **Manganese (Mn)** | 0.10 - 0.6 | | **Zinc (Zn)** | ≤ 0.5 | | **Lead (Pb)** | 0.3 - 0.8 | | **Bismuth (Bi)** | 0.3 - 0.8 | | **Other Elements** | ≤ 0.15 total | --- #### **2. Physical Properties** | Property | Value / Description | |----------|---------------------| | **Density** | 2.85 g/cm³ (0.103 lb/in³) | | **Melting Range** | 520°C - 645°C (968°F - 1193°F) | | **Electrical Conductivity** | 38-42% IACS | | **Thermal Conductivity** | 140-150 W/m·K | | **Coefficient of Thermal Expansion** | 23.5 × 10⁻⁶/°C (20-100°C) | | **Modulus of Elasticity** | 71.0 GPa (10,300 ksi) | | **Poisson's Ratio** | 0.33 | --- #### **3. Mechanical Properties** **Typical Mechanical Properties (T3 Temper):** | Property | Value | |----------|-------| | **Tensile Strength** | 320-370 MPa (46-54 ksi) | | **Yield Strength (0.2% Offset)** | 200-250 MPa (29-36 ksi) | | **Elongation in 2 inches** | 12-18% | | **Shear Strength** | 190-230 MPa (28-33 ksi) | | **Fatigue Strength** | 110 MPa (16 ksi) | | **Brinell Hardness** | 90-100 HB | | **Machinability Rating** | Excellent (95% of free-cutting brass) | --- #### **4. International Standards** | Standard System | Designation | Product Form | |-----------------|-------------|--------------| | **ASTM** | ASTM B211 | Rod, Bar, Wire | | **SAE** | SAE J454 | Wire and Rod | | **UNS** | A92027 | - | | **EN** | EN AW-2027 | Extruded Products | --- #### **5. Product Applications** **Automotive Industry:** - Fuel injection components - Transmission parts - Engine sensors and fittings - Brake system components - Electrical connectors **Aerospace Applications:** - Instrument housings - Control system components - Avionics mounting parts - Non-structural fasteners - Electrical connectors **Industrial Applications:** - Screw machine products - Valve bodies and components - Pump parts and fittings - Hydraulic system components - Precision mechanical parts **Consumer Products:** - Camera and optical components - Electronic enclosures - Precision instruments - Lock mechanisms - Hardware components --- #### **6. Key Advantages & Considerations** **Advantages:** - ✅ **Exceptional Machinability** - superior to most aluminum alloys - ✅ **Excellent Chip Formation** - short, broken chips - ✅ **Good Surface Finish** - minimal post-processing required - ✅ **Reasonable Strength** for mechanical applications - ✅ **Good Thermal Conductivity** - ✅ **Cost-Effective** for high-volume production **Considerations:** - ⚠️ **Lead Content** - not RoHS compliant - ⚠️ **Limited Corrosion Resistance** - requires protective coatings - ⚠️ **Not Recommended for Welding** - ⚠️ **Lower Strength** than structural aluminum alloys - ⚠️ **Special Handling Required** due to lead content --- **Heat Treatment Options** **Available Tempers:** - O: Annealed - T3: Solution heat-treated, cold worked, naturally aged - T4: Solution heat-treated and naturally aged - T6: Solution heat-treated and artificially aged **Typical Heat Treatment Cycle (T6):** - Solution Treatment: 495-505°C (923-941°F) - Quenching: Rapid water quench - Artificial Aging: 155-165°C (311-329°F) for 8-12 hours --- **Machining Characteristics** **Machinability:** Excellent (rated 95% of free-cutting brass) **Cutting Speed:** High speeds achievable **Tool Life:** Extended due to chip-breaking properties **Surface Quality:** Excellent with minimal tool marks **Chip Control:** Superior - produces small, broken chips --- **Environmental and Safety Notes** **Regulatory Compliance:** - Contains lead - not suitable for food contact applications - Requires proper handling and disposal procedures - Not RoHS compliant for electronic applications - Must be identified as containing lead in documentation **Alternative Options:** - Lead-free machining alloys available for restricted applications - 6000-series alloys for general purpose applications - 7000-series alloys for higher strength requirements --- **Conclusion** 2027 Aluminum Alloy is specifically formulated for applications requiring outstanding machinability in high-volume production environments. The strategic addition of lead and bismuth provides exceptional chip-breaking characteristics that make it ideal for automatic screw machines and other high-speed machining operations. While the presence of lead limits its use in certain applications, its superior machining performance, excellent surface finish capabilities, and good mechanical properties make it a valuable material for automotive, aerospace, and industrial components where manufacturing efficiency is paramount. The alloy represents an optimal choice for producers seeking to maximize production rates while maintaining quality in precision-machined aluminum components.

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 1553 gallon liquid totes Special package is available on request.