6069-T6 Aluminum alloy,Aluminum 6069-T6 alloy,Cold Impact Extruded Cylinder,E FORU

### **Aluminum 6069-T6 Alloy: Cold Impact Extruded Cylinder Product Introduction** **Overview** Aluminum 6069-T6 is a high-strength aluminum-magnesium-silicon alloy supplied in the solution heat-treated and artificially aged condition, specifically manufactured using **cold impact extrusion** technology. This advanced manufacturing process produces high-strength cylinders with **excellent dimensional accuracy**, **superior surface finish**, and **enhanced mechanical properties** through severe plastic deformation. The T6 temper combined with cold working effects provides **exceptional strength characteristics** for demanding structural and pressure applications. --- #### **1. Chemical Composition (Weight %)** | Element | Minimum (%) | Maximum (%) | |---------|-------------|-------------| | Silicon (Si) | 0.6 | 1.2 | | Iron (Fe) | - | 0.35 | | Copper (Cu) | 0.25 | 0.45 | | Manganese (Mn) | 0.20 | 0.40 | | Magnesium (Mg) | 0.8 | 1.2 | | Chromium (Cr) | 0.10 | 0.20 | | Zinc (Zn) | - | 0.10 | | Titanium (Ti) | - | 0.10 | | Other (Each) | - | 0.05 | | Other (Total) | - | 0.15 | | **Aluminum (Al)** | **Balance** | | --- #### **2. Physical Properties** | Property | Metric Value | Imperial Value | |----------|--------------|----------------| | **Density** | 2.70 g/cm³ | 0.0975 lb/in³ | | **Melting Range** | 580-650 °C | 1076-1202 °F | | **Electrical Conductivity** | 38-42% IACS | 38-42% IACS | | **Thermal Conductivity** | 155-170 W/m·K | 900-985 BTU·in/(hr·ft²·°F) | | **Coefficient of Thermal Expansion** | 23.6 × 10⁻⁶/°C | 13.1 × 10⁻⁶/°F | | **Modulus of Elasticity** | 69.0 GPa | 10,007 ksi | --- #### **3. Mechanical Properties** **Typical Mechanical Properties for 6069-T6 Cold Impact Extruded Cylinders:** | Property | Metric Value | Imperial Value | |----------|--------------|----------------| | **Tensile Strength** | 370-400 MPa | 54-58 ksi | | **Yield Strength (0.2% Offset)** | 330-360 MPa | 48-52 ksi | | **Elongation (in 50mm)** | 8-12% | 8-12% | | **Hardness (Brinell)** | 100-110 HB | 100-110 HB | | **Shear Strength** | 220-240 MPa | 32-35 ksi | | **Fatigue Strength** | 130-150 MPa | 19-22 ksi | | **Compressive Yield Strength** | 330-360 MPa | 48-52 ksi | --- #### **4. International Standards** * **ASTM Standards:** * ASTM B247: Standard Specification for Aluminum and Aluminum-Alloy Die Forgings, Hand Forgings, and Rolled Ring Forgings * ASTM B211: Standard Specification for Aluminum and Aluminum-Alloy Bar, Rod, and Wire * **European Standards (EN):** * EN 573-3: Chemical composition * EN 586-2: Forgings - Mechanical properties * EN 755-2: Mechanical properties for extruded products * **ISO Standards:** * ISO 6361-2: Wrought aluminum and aluminum alloy sheets, strips and plates * ISO 6362-2: Wrought aluminum and aluminum alloy extruded rods/bars, tubes and profiles --- #### **5. Cold Impact Extrusion Process** **Manufacturing Characteristics:** - **Process Temperature:** Room temperature to 250°C (482°F) - **Impact Pressure:** 1000-2000 MPa (145-290 ksi) - **Reduction Ratio:** 3:1 to 6:1 per stroke - **Surface Finish:** 0.8-3.2 μm Ra (32-125 μin) - **Dimensional Tolerance:** ±0.1 mm (±0.004 inch) **Heat Treatment Process:** 1. **Solution Heat Treatment:** 530-540°C (986-1004°F) 2. **Quenching:** Controlled water quenching 3. **Artificial Aging:** 165-175°C (329-347°F) for 8-12 hours --- #### **6. Product Applications** **Aerospace and Defense:** - Aircraft landing gear cylinders - Missile body sections - Rocket motor cases - Military vehicle suspension components **Automotive Industry:** - Shock absorber cylinders - Suspension strut housings - Brake system components - Steering system parts **Industrial Equipment:** - Hydraulic cylinder barrels - Pneumatic cylinder bodies - High-pressure vessel components - Machinery structural elements **Specialized Applications:** - High-pressure gas cylinders - Energy storage system components - Medical equipment cylinders - Sports equipment components --- #### **7. Key Characteristics & Advantages** * **Enhanced Mechanical Properties:** Cold working combined with T6 temper provides superior strength * **Excellent Surface Finish:** Smooth surfaces reduce finishing operations * **Superior Dimensional Accuracy:** Tight tolerances reduce machining requirements * **Grain Structure Refinement:** Severe plastic deformation creates fine-grained microstructure * **Improved Fatigue Performance:** Enhanced resistance to cyclic loading * **Material Efficiency:** Near-net shape manufacturing reduces waste * **Cost Effectiveness:** Reduced machining and material costs --- #### **8. Processing and Fabrication** **Machining Characteristics:** - Good machinability with proper tooling - Suitable for precision machining operations - Good surface finish maintainable - Requires appropriate cutting parameters **Secondary Operations:** - **Heat Treatment:** Stress relieving if required - **Surface Treatment:** Anodizing, hard coating - **Machining:** Boring, turning, threading - **Testing:** Pressure testing, NDT **Joining Methods:** - Good weldability with proper procedures - Mechanical joining preferred for critical applications - Adhesive bonding suitable - Threaded connections easily machined --- #### **9. Quality Assurance** **Testing Requirements:** - Mechanical property testing - Ultrasonic testing for internal defects - Dimensional accuracy verification - Surface quality inspection - Pressure testing for pressure applications - Chemical composition analysis **Certification:** - Mill test certificates per international standards - Non-destructive testing certification - Process control documentation - Full traceability records - Pressure equipment certification (where applicable) --- **Technical Note:** Aluminum 6069-T6 cold impact extruded cylinders represent an advanced manufacturing solution that combines the benefits of severe plastic deformation with optimized heat treatment. The cold impact extrusion process creates refined grain structures and work hardening effects that complement the precipitation hardening from T6 treatment, resulting in exceptional mechanical properties. This manufacturing method is particularly suitable for producing high-strength, precision cylindrical components with excellent surface finish and dimensional accuracy. The combination of material properties and manufacturing advantages makes these cylinders ideal for critical applications in aerospace, automotive, and high-pressure systems where reliability, weight savings, and performance are paramount.

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 2019 gallon liquid totes Special package is available on request.