6009-T6 Aluminum alloy,Aluminum 6009-T6 alloy,E FORU

### **Product Introduction: 6009-T6 Aluminum Alloy** **6009-T6 Aluminum Alloy** is a heat-treatable aluminum-magnesium-silicon (Al-Mg-Si) alloy in the peak-aged T6 temper condition. This alloy combines medium to high strength with good corrosion resistance and excellent extrudability. The T6 temper (solution heat-treated and artificially aged) provides optimal mechanical properties for structural applications where a balance of strength, formability, and weight reduction is required, particularly in transportation and architectural sectors. --- ### **1. International Standards** 6009-T6 Aluminum Alloy is recognized under the following international standards: - **AA (Aluminum Association, USA):** AA 6009, Temper T6 - **UNS (Unified Numbering System):** UNS A96009 - **ISO (International Organization for Standardization):** AlMg0.5Si - T6 - **EN (European Norm):** EN AW-6009 - T6 - **ASTM:** ASTM B221 (Extruded Products) --- ### **2. Chemical Composition** The chemical composition limits (in weight percentage) for the base 6009 alloy are: | Element | Content (%) | |:---------|:------------| | **Aluminum (Al)** | Balance | | **Silicon (Si)** | 0.60 - 1.0 | | **Magnesium (Mg)** | 0.40 - 0.8 | | **Manganese (Mn)** | 0.20 - 0.6 | | **Copper (Cu)** | 0.15 - 0.40 | | **Iron (Fe)** | ≤ 0.35 | | **Chromium (Cr)** | ≤ 0.20 | | **Zinc (Zn)** | ≤ 0.10 | | **Titanium (Ti)** | ≤ 0.10 | | **Others (each)** | ≤ 0.05 | | **Others (total)** | ≤ 0.15 | **Key Takeaway:** The balanced magnesium-silicon ratio with controlled copper content enables effective precipitation hardening. Copper enhances strength through the formation of strengthening precipitates while maintaining reasonable corrosion resistance. --- ### **3. Physical Properties** The typical physical properties of 6009-T6 aluminum alloy are: | Property | Metric Value | Imperial Value | |:----------|:-------------|:---------------| | **Density** | 2.70 g/cm³ | 0.0975 lb/in³ | | **Melting Range** | 615 - 655 °C | 1140 - 1210 °F | | **Coefficient of Thermal Expansion** | 23.4 × 10⁻⁶/°C (20-100°C) | 13.0 × 10⁻⁶/°F (68-212°F) | | **Thermal Conductivity** | 160 - 180 W/m·K | 925 - 1040 BTU·in/(hr·ft²·°F) | | **Electrical Conductivity** | 42-48% IACS | 42-48% IACS | | **Modulus of Elasticity** | 69 GPa | 10,000 ksi | | **Shear Modulus** | 26 GPa | 3,770 ksi | | **Poisson's Ratio** | 0.33 | 0.33 | --- ### **4. Mechanical Properties (T6 Temper)** The T6 temper condition provides enhanced mechanical properties compared to T4 temper: **Typical Mechanical Properties:** - **Tensile Strength:** 290 - 330 MPa (42 - 48 ksi) - **Yield Strength (0.2% Offset):** 250 - 290 MPa (36 - 42 ksi) - **Elongation (% in 50mm):** 10-14% - **Shear Strength:** 185 - 210 MPa (27 - 30 ksi) - **Fatigue Strength:** 110 - 130 MPa (16 - 19 ksi) [Rotating Beam, 5×10⁸ cycles] - **Hardness (Brinell):** 85 - 95 HB (500 kg load, 10 mm ball) --- ### **5. Product Applications** 6009-T6 is used in applications requiring higher strength than T4 temper: - **Automotive Structural Components:** - Seat frames and reinforcement members - Body structural reinforcements - Bumper systems - Chassis components - **Transportation Industry:** - Bus body structures - Rail vehicle interior structures - Truck frame components - Container fittings - **Architectural Applications:** - Structural glazing systems - Curtain wall mullions - Window and door frames requiring higher strength - **Industrial Applications:** - Machinery components - Material handling equipment - Welded structures --- ### **6. Key Characteristics & Advantages** - **Enhanced Strength Properties:** The T6 temper provides significantly higher yield and tensile strength compared to T4 temper, making it suitable for structural applications. - **Good Extrudability:** Maintains excellent extrusion characteristics, allowing for production of complex profiles with good surface finish. - **Improved Stress Corrosion Resistance:** The T6 temper offers better resistance to stress corrosion cracking compared to some higher copper-containing alloys. - **Excellent Anodizing Response:** Produces high-quality anodized surfaces with good appearance and corrosion resistance. - **Good Machinability:** Can be machined to close tolerances with good surface finish in the T6 condition. - **Weldability:** Can be welded using conventional methods (MIG, TIG), though post-weld heat treatment may be required to restore full strength in the heat-affected zone. - **Weight Savings:** Provides excellent strength-to-weight ratio for lightweight structural designs. --- ### **7. Processing Characteristics** **Heat Treatment Cycle:** - Solution Heat Treatment: 525-550°C (975-1020°F) for sufficient time to dissolve soluble constituents - Quenching: Rapid quenching in water or polymer solutions - Artificial Aging: 160-180°C (320-355°F) for 8-12 hours to achieve T6 properties **Fabrication Considerations:** - Forming should be performed in the solution heat-treated condition before aging when possible - Secondary machining operations are readily performed in the T6 temper - Welding should be followed by re-aging or full re-solution heat treatment for critical applications - Annealing: 415°C (775°F) for 2-3 hours followed by furnace cooling if required for severe forming operations **Surface Treatment:** - Excellent response to anodizing processes - Suitable for various chemical conversion coatings - Good paint adhesion characteristics In summary, **6009-T6 Aluminum Alloy** provides a significant strength advantage over the T4 temper while maintaining good manufacturing characteristics. Its combination of medium-high strength, good corrosion resistance, and excellent extrudability makes it particularly valuable for structural applications in transportation and architecture where weight reduction and structural performance 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 1953 gallon liquid totes Special package is available on request.