6262-T6 Aluminum alloy,Aluminum 6262-T6 alloy,E FORU

### **Aluminum 6262-T6 Alloy (UNS A96262) - Product Introduction** **Aluminum 6262-T6** is a heat-treatable wrought aluminum-magnesium-silicon alloy, renowned for its **superior free-machining characteristics**. The "T6" temper designation indicates that the material has been solution heat-treated and then artificially aged, which gives it an optimal combination of high strength, good corrosion resistance, and excellent machinability. It is specifically engineered to produce a fine, broken chip during machining, resulting in superior surface finishes and extended tool life. It is often considered a more corrosion-resistant alternative to the 2011 alloy while offering better machinability than 6061. --- #### **1. Chemical Composition** The chemical composition of Aluminum 6262 is tailored to provide its unique set of properties, particularly its machinability. | 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 | | **Chromium (Cr)** | ≤ 0.04 | ≤ 0.04 | | **Manganese (Mn)** | ≤ 0.08 | ≤ 0.08 | | **Zinc (Zn)** | ≤ 0.07 | ≤ 0.07 | | **Lead (Pb)** | 0.4 - 0.7 | 0.4 - 0.7 | | **Bismuth (Bi)** | 0.4 - 0.7 | 0.4 - 0.7 | | **Titanium (Ti)** | ≤ 0.08 | ≤ 0.08 | | **Others (Each)** | ≤ 0.03 | ≤ 0.03 | | **Others (Total)** | ≤ 0.08 | ≤ 0.08 | *The key differentiator is the balanced addition of **Lead (Pb) and Bismuth (Bi)**, which acts as chip-breakers during machining, providing a superb surface finish.* --- #### **2. Physical Properties** Aluminum 6262-T6 offers a favorable blend of lightweight properties and functional characteristics. | Property | Metric Value | Imperial Value | |---|---|---| | **Density** | 2.72 g/cm³ | 0.098 lb/in³ | | **Melting Range** | ~ 580 - 650 °C | ~ 1076 - 1202 °F | | **Electrical Conductivity** | ~ 45-50 % IACS | ~ 45-50 % IACS | | **Thermal Conductivity** | 170 - 180 W/m·K | 1180 - 1250 BTU·in/(hr·ft²·°F) | | **Coefficient of Thermal Expansion** | 23.4 x 10⁻⁶ /K | 13.0 x 10⁻⁶ /°F | | **Modulus of Elasticity** | 69 GPa | 10,000 ksi | --- #### **3. Mechanical Properties (T6 Temper)** The T6 temper is the standard and most common condition for this alloy, providing the ideal balance for machining and application. | Property | Value (Metric) | Value (Imperial) | |---|---|---| | **Tensile Strength, Ultimate** | 310 - 330 MPa | 45,000 - 48,000 psi | | **Tensile Strength, Yield (0.2% Offset)** | 275 - 300 MPa | 40,000 - 43,500 psi | | **Elongation at Break** | 10 - 12% | 10 - 12% | | **Hardness (Brinell)** | 95 - 100 HB | 95 - 100 HB | --- #### **4. International Standards** Aluminum 6262-T6 is recognized and specified under several key international standards. * **ASTM:** * **ASTM B211:** Standard Specification for Aluminum-Alloy Bar, Rod, and Wire (most common for rod and bar). * **ASTM B221:** Standard Specification for Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes. * **UNS:** **A96262** * **SAE:** **SAE J454** * **ISO:** **EN AW-6262** (The European equivalent, though the 'A' variant 6262A with adjusted Pb/Bi is more common in EN standards). * **AMS:** **AMS 4331** (Aerospace Material Specification) --- #### **5. Product Applications** The primary application of 6262-T6 is in the production of high-quality, precision-machined components. * **Screw Machine Products:** The premier application for nuts, bolts, screws, and other complex fasteners produced on automatic screw machines. * **Hydraulic and Pneumatic Fittings:** Widely used for valve bodies, manifolds, connectors, and adapters due to its pressure tightness and machinability. * **Camera and Optical Equipment:** For small, high-tolerance, and complex parts requiring a good surface finish. * **Aerospace and Automotive Fittings:** Non-critical structural fittings, couplings, and parts where a combination of light weight, strength, and machinability is essential. * **Electrical Connectors:** Where good machinability and decent electrical conductivity are required. --- #### **6. Key Advantages & Characteristics** * **Excellent Free-Machinability:** The primary advantage. It is specifically designed for high-speed machining, producing small, broken chips and a superior surface finish, which increases productivity and tool life. * **Good Mechanical Strength:** The T6 temper provides strength comparable to 6061-T6, making it suitable for mechanically loaded components. * **Good Corrosion Resistance:** Offers significantly better corrosion resistance than the 2011 alloy, making it suitable for a wider range of environments without special protection. * **Excellent Anodizing Response:** Readily accepts and holds decorative and protective anodized finishes very well. * **Heat Treatable:** The T6 temper is a permanent condition, providing stable mechanical properties. **Conclusion:** Aluminum 6262-T6 is a premium free-machining alloy that successfully bridges the gap between the high machinability of 2011 and the good corrosion resistance/weldability of 6061. Its compliance with major international standards like ASTM and its proven performance in screw machines make it the material of choice for manufacturers of high-value, precision-machined components across the hydraulic, pneumatic, automotive, and aerospace industries.

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 2066 gallon liquid totes Special package is available on request.