5140 Aluminum alloy,Aluminum 5140 alloy,E FORU

### **5140 Aluminum Alloy Product Introduction** **Overview** 5140 Aluminum Alloy is a high-strength, heat-treatable alloy belonging to the Al-Mg-Si series (6xxx series). It is renowned for its excellent combination of strength, good corrosion resistance, and superior extrudability. This alloy achieves its mechanical properties through a precipitation hardening process (T5 or T6 temper), making it a prime choice for structural components and architectural applications where a favorable strength-to-weight ratio is critical. --- ### **1. Chemical Composition** The chemical composition of 5140 Aluminum Alloy conforms to major international standards. The following table outlines the typical elemental composition by weight percentage (%). | Element | Content (%) | | :--- | :--- | | **Aluminum (Al)** | Balance | | **Silicon (Si)** | 0.60 - 1.20 | | **Magnesium (Mg)** | 0.40 - 0.90 | | **Iron (Fe)** | ≤ 0.50 | | **Copper (Cu)** | ≤ 0.25 | | **Manganese (Mn)** | ≤ 0.30 | | **Chromium (Cr)** | ≤ 0.20 | | **Zinc (Zn)** | ≤ 0.20 | | **Titanium (Ti)** | ≤ 0.10 | | **Others (Each)** | ≤ 0.05 | | **Others (Total)** | ≤ 0.15 | *Note: The precise limits may vary slightly depending on the specific standard (e.g., EN, ASTM).* --- ### **2. Physical Properties** The physical properties of 5140 alloy make it suitable for a wide range of engineering applications. | Property | Value / Description | | :--- | :--- | | **Density** | 2.70 g/cm³ (0.0975 lb/in³) | | **Melting Range** | ~ 580 - 650 °C (1076 - 1202 °F) | | **Electrical Conductivity** | Approximately 50-55% IACS (International Annealed Copper Standard) | | **Thermal Conductivity** | 170 - 190 W/m·K | | **Coefficient of Thermal Expansion** | 23.4 x 10⁻⁶/°C (20-100°C) | | **Modulus of Elasticity** | 70 GPa (10,000 ksi) | | **Corrosion Resistance** | Good, particularly in atmospheric environments. Can be further enhanced with surface treatments such as anodizing or powder coating. | --- ### **3. Mechanical Properties (Typical)** Mechanical properties are highly dependent on the temper condition. | Temper | Tensile Strength (MPa) | Yield Strength (0.2% Offset, MPa) | Elongation (%) | | :--- | :--- | :--- | :--- | | **O (Annealed)** | ~ 130 | ~ 55 | ~ 25 | | **T4 (Solution Heat Treated & Naturally Aged)** | ~ 180 | ~ 95 | ~ 22 | | **T5 (Artificially Aged after Extrusion)** | ~ 220 - 260 | ~ 180 - 220 | ~ 10 - 14 | | **T6 (Solution Heat Treated & Artificially Aged)** | ~ 260 - 310 | ~ 240 - 280 | ~ 8 - 12 | --- ### **4. Product Applications** 5140 Aluminum Alloy is versatile and is commonly used in the form of extruded profiles, bars, and tubes for: * **Transportation:** Automotive chassis components, body structures, truck frames, and railcar parts. * **Architecture & Construction:** Window and door frames, curtain walls, roofing structures, and architectural trims. * **General Engineering:** High-strength structural frameworks, conveyor systems, and machine parts. * **Consumer Durables:** Ladders, sporting goods, and furniture frames. --- ### **5. International Standards** 5140 Aluminum Alloy is recognized under various international standards, with close equivalents across different naming systems. | Standard | Designation | Equivalent / Similar Alloy | | :--- | :--- | :--- | | **ISO** | **AlMgSi0.7** (EN 573-3) | The standard European designation for 5140. | | **ASTM** | **A95151** | This is the ASTM Unified Numbering System (UNS) designation. | | **AA** | **6140** | The Aluminum Association (AA) designation is typically **6140**, not 5140. The "51xx" series is less common, and 6140 is the widely accepted equivalent with a very similar composition. | | **EN** | **EN AW-6140** (AlMgSi0.7) | The standard European Norm designation. | | **JIS** | **A6140** | Japanese Industrial Standards designation. | **Important Note on Nomenclature:** While "5140" is used in some contexts, the most globally recognized and equivalent designation for this specific Al-Mg-Si composition is **6140** per the Aluminum Association (AA) and many international standards. It is crucial to verify the exact alloy specification with your supplier. --- ### **Summary of Key Advantages** * **High Strength-to-Weight Ratio:** Ideal for lightweight yet strong structures. * **Excellent Extrudability:** Allows for the production of complex and intricate cross-sectional profiles. * **Good Corrosion Resistance:** Performs well in various environments, especially when coated. * **Good Machinability:** Can be readily machined in the T6 temper. * **Excellent Surface Treatment Response:** Anodizes and paints exceptionally well, offering aesthetic and protective benefits. For specific project requirements, please consult with our technical team to ensure 5140 (6140) alloy meets your precise mechanical, chemical, and dimensional specifications.

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 1840 gallon liquid totes Special package is available on request.