6262-T9 Aluminum alloy,Aluminum 6262-T9 alloy,E FORU

### **Aluminum 6262-T9 Alloy (UNS A96262) - Product Introduction** **Aluminum 6262-T9** is a high-strength, heat-treatable aluminum-magnesium-silicon alloy with optimized free-machining characteristics. The "T9" temper designation indicates that the material has undergone solution heat treatment, artificial aging, and then cold working to achieve higher strength properties. This specific processing sequence results in the highest strength levels available in the 6262 alloy series while maintaining good machinability, making it suitable for applications requiring superior mechanical performance. --- #### **1. Chemical Composition** The chemical composition follows established standards to ensure consistent high-strength performance: | Element | Content (%) (Typical) | Standard Range (ASTM) | |---|---|---| | **Aluminum (Al)** | Balance | Balance | | **Magnesium (Mg)** | 0.6 - 1.0 | 0.6 - 1.0 | | **Silicon (Si)** | 0.4 - 0.8 | 0.4 - 0.8 | | **Iron (Fe)** | ≤ 0.15 | ≤ 0.15 | | **Copper (Cu)** | 0.15 - 0.35 | 0.15 - 0.35 | | **Lead (Pb)** | 0.4 - 0.7 | 0.4 - 0.7 | | **Bismuth (Bi)** | 0.4 - 0.7 | 0.4 - 0.7 | | **Chromium (Cr)** | ≤ 0.04 | ≤ 0.04 | | **Manganese (Mn)** | ≤ 0.08 | ≤ 0.08 | | **Zinc (Zn)** | ≤ 0.07 | ≤ 0.07 | | **Titanium (Ti)** | ≤ 0.08 | ≤ 0.08 | | **Others (Each)** | ≤ 0.03 | ≤ 0.03 | | **Others (Total)** | ≤ 0.08 | ≤ 0.08 | *The balanced addition of magnesium and silicon (Mg₂Si formation) combined with lead and bismuth provides both high strength and excellent machining characteristics.* --- #### **2. Physical Properties** Aluminum 6262-T9 maintains typical aluminum characteristics with enhanced mechanical properties: | Property | Metric Value | Imperial Value | |---|---|---| | **Density** | 2.72 g/cm³ | 0.098 lb/in³ | | **Melting Range** | 580 - 650 °C | 1076 - 1202 °F | | **Electrical Conductivity** | 42-46 % IACS | 42-46 % IACS | | **Thermal Conductivity** | 160-170 W/m·K | 1110-1180 BTU·in/(hr·ft²·°F) | | **Coefficient of Thermal Expansion** | 23.4 × 10⁻⁶/K | 13.0 × 10⁻⁶/°F | | **Modulus of Elasticity** | 69 GPa | 10,000 ksi | --- #### **3. Mechanical Properties (T9 Temper)** The T9 temper provides the highest strength in the 6262 alloy series: | Property | Metric Value | Imperial Value | |---|---|---| | **Tensile Strength, Ultimate** | 350 - 380 MPa | 50,800 - 55,100 psi | | **Tensile Strength, Yield (0.2% Offset)** | 330 - 360 MPa | 47,800 - 52,200 psi | | **Elongation at Break** | 5 - 8% | 5 - 8% | | **Hardness (Brinell)** | 105 - 115 HB | 105 - 115 HB | | **Shear Strength** | 220 MPa | 31,900 psi | | **Fatigue Strength** | 105 MPa | 15,200 psi | --- #### **4. International Standards** Aluminum 6262-T9 conforms to the following international standards: * **ASTM:** * **ASTM B211:** Standard Specification for Aluminum-Alloy Bar, Rod, and Wire * **ASTM B221:** Standard Specification for Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes * **UNS:** **A96262** * **ISO:** **EN AW-6262** (3.3206) * **AMS:** **AMS 4331** (Aerospace Material Specification) * **SAE:** **SAE J454** * **EN:** **EN 573-3** (European Standard) --- #### **5. Product Applications** 6262-T9 is specified for high-strength applications requiring excellent machinability: * **High-Strength Fasteners:** Aerospace bolts, critical structural screws, and high-load fasteners * **Precision Gears and Shafts:** High-strength power transmission components * **Aerospace Structural Components:** High-stress brackets, fittings, and landing gear components * **Automotive Performance Parts:** High-stress engine components, transmission parts * **Hydraulic System Components:** High-pressure piston rods, valve stems * **Defense Applications:** Firearm components, military hardware * **Industrial Machinery:** High-wear components requiring machinability and strength --- #### **6. Key Advantages & Characteristics** * **Maximum Strength:** Highest mechanical properties available in the 6262 alloy series * **Maintained Machinability:** Excellent chip characteristics despite higher strength * **Good Wear Resistance:** Suitable for applications involving friction and wear * **Improved Stiffness:** Higher yield strength provides better resistance to deformation * **Good Fatigue Performance:** Enhanced resistance to cyclic loading * **Maintained Corrosion Resistance:** Superior to 2011-T8 with comparable strength * **Dimensional Stability:** Good for precision components requiring tight tolerances * **Machining Economy:** Combines high strength with good tool life and surface finish **Conclusion:** Aluminum 6262-T9 represents the peak strength variant in the 6262 alloy family, offering an exceptional combination of high mechanical properties and maintained machinability. The specialized T9 thermal-mechanical processing makes it ideal for the most demanding applications in aerospace, automotive, and industrial sectors where both superior strength and manufacturing efficiency are critical requirements. Its compliance with international standards ensures reliable performance in safety-critical applications worldwide.

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 2069 gallon liquid totes Special package is available on request.