2025-T6 Aluminum alloy,Aluminum 2025-T6 alloy,E FORU

### **Aluminum 2025-T6 Alloy Product Introduction** **Overview** 2025-T6 is a high-strength aluminum-copper alloy with excellent machining characteristics, primarily used for screw machine products and other applications requiring superior machinability. The T6 temper (solution heat-treated and artificially aged) provides an optimal combination of strength and machining performance, making it particularly suitable for high-volume production of precision components. --- #### **1. Chemical Composition** | Element | Content (%) | |---------|-------------| | **Aluminum (Al)** | Balance | | **Copper (Cu)** | 3.9 - 5.0 | | **Manganese (Mn)** | 0.40 - 1.0 | | **Silicon (Si)** | 0.50 - 1.2 | | **Iron (Fe)** | ≤ 0.50 | | **Zinc (Zn)** | ≤ 0.25 | | **Lead (Pb)** | 0.05 - 0.20 | | **Bismuth (Bi)** | 0.05 - 0.20 | | **Titanium (Ti)** | ≤ 0.15 | | **Other Elements** | ≤ 0.15 total | --- #### **2. Physical Properties** | Property | Value / Description | |----------|---------------------| | **Density** | 2.81 g/cm³ (0.101 lb/in³) | | **Melting Range** | 520°C - 650°C (968°F - 1202°F) | | **Electrical Conductivity** | 35-40% IACS | | **Thermal Conductivity** | 130-140 W/m·K | | **Coefficient of Thermal Expansion** | 23.4 × 10⁻⁶/°C (20-100°C) | | **Modulus of Elasticity** | 72.0 GPa (10,400 ksi) | | **Poisson's Ratio** | 0.33 | --- #### **3. Mechanical Properties** **Typical Mechanical Properties:** | Property | Value | |----------|-------| | **Tensile Strength** | 350-400 MPa (51-58 ksi) | | **Yield Strength (0.2% Offset)** | 220-270 MPa (32-39 ksi) | | **Elongation in 2 inches** | 10-15% | | **Shear Strength** | 200-240 MPa (29-35 ksi) | | **Fatigue Strength** | 110 MPa (16 ksi) | | **Brinell Hardness** | 95-105 HB | | **Machinability Rating** | Excellent (90% of free-cutting brass) | --- #### **4. International Standards** | Standard System | Designation | Product Form | |-----------------|-------------|--------------| | **ASTM** | ASTM B211 | Rod, Bar | | **SAE** | SAE AMS 4079 | Bar and Wire | | **UNS** | A92025 | - | | **EN** | EN AW-2025 [T6] | Extruded Products | --- #### **5. Product Applications** **Automotive Industry:** - Fuel system components - Transmission parts - Engine components - Precision fittings and connectors **Aerospace Applications:** - Aircraft fittings and fasteners - Instrument components - Control system parts - Avionics housings **Industrial Applications:** - Screw machine products - Valve components - Pump parts - High-volume precision components **Consumer Products:** - Camera parts - Optical instruments - Precision mechanical components - Electrical connectors --- #### **6. Key Advantages & Considerations** **Advantages:** - ✅ **Excellent Machinability** - superior chip formation - ✅ **Good Strength-to-Weight Ratio** - ✅ **Stable Mechanical Properties** - ✅ **Good Surface Finish** after machining - ✅ **Predictable Performance** in T6 condition - ✅ **Wide Availability** in bar and rod forms **Considerations:** - ⚠️ **Limited Corrosion Resistance** - requires protection - ⚠️ **Not Recommended for Welding** - ⚠️ **Lower Strength** compared to 2024 alloy - ⚠️ **Lead Content** may restrict some applications - ⚠️ **Limited High-Temperature Capability** --- **Heat Treatment Process** **T6 Temper Process:** 1. **Solution Heat Treatment:** - Temperature: 495-505°C (923-941°F) - Soak time: 1-2 hours depending on thickness - Rapid quenching in water 2. **Artificial Aging:** - Temperature: 165-175°C (329-347°F) - Time: 8-12 hours - Air cooling to room temperature --- **Machining Characteristics** **Machinability:** Excellent (rated 90% of free-cutting brass) **Tool Life:** Extended due to chip-breaking properties **Surface Finish:** Superior with minimal effort **Chip Formation:** Short, broken chips for easy disposal --- **Corrosion Protection** **Recommended Methods:** - Chemical conversion coating - Anodizing - Electroplating - Paint and powder coating - Regular maintenance in corrosive environments --- **Conclusion** 2025-T6 Aluminum Alloy is specifically engineered for applications requiring excellent machinability combined with good mechanical strength. The addition of lead and bismuth provides superior chip-breaking characteristics, making it ideal for high-volume production of precision components on automatic screw machines. While offering lower absolute strength than some other 2000-series alloys, its exceptional machining performance and consistent properties in the T6 condition make it a valuable material for automotive, aerospace, and industrial applications where manufacturing efficiency and precision are paramount. The alloy continues to serve important roles in components where complex machining operations and high production volumes are 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 1551 gallon liquid totes Special package is available on request.