6253 Aluminum alloy,Aluminum 6253 alloy,E FORU

### **Aluminum 6253 Alloy (UNS A96253) - Product Introduction** **Aluminum 6253** is a wrought aluminum-magnesium alloy, primarily known for its excellent corrosion resistance, particularly in marine environments, and its high strength. It belongs to the Al-Mg family (5000 series) and is often considered a superior alternative to the more common 5052 and 5083 alloys for specific applications. Its key characteristics include good formability, weldability, and a bright, aesthetically pleasing surface finish after anodizing, making it a versatile choice for both structural and decorative components. --- #### **1. Chemical Composition** The composition of Aluminum 6253 conforms to several international standards, with the following typical weight percentages: | Element | Content (%) (Typical) | Standard Range | |---|---|---| | **Aluminum (Al)** | Balance | Balance | | **Magnesium (Mg)** | 1.5 - 2.5 | 1.5 - 2.5 | | **Manganese (Mn)** | 0.05 - 0.20 | ≤ 0.20 | | **Chromium (Cr)** | 0.15 - 0.35 | 0.15 - 0.35 | | **Copper (Cu)** | ≤ 0.10 | ≤ 0.10 | | **Iron (Fe)** | ≤ 0.40 | ≤ 0.40 | | **Silicon (Si)** | ≤ 0.40 | ≤ 0.40 | | **Zinc (Zn)** | ≤ 0.20 | ≤ 0.20 | | **Others (Each)** | ≤ 0.05 | ≤ 0.05 | | **Others (Total)** | ≤ 0.15 | ≤ 0.15 | *The controlled addition of Chromium (Cr) enhances the alloy's resistance to stress corrosion cracking.* --- #### **2. Physical Properties** Aluminum 6253 offers a favorable combination of lightweight and strength. The following are typical physical properties at room temperature. | Property | Metric Value | Imperial Value | |---|---|---| | **Density** | 2.68 g/cm³ | 0.0968 lb/in³ | | **Melting Range** | ~ 590 - 650 °C | ~ 1094 - 1202 °F | | **Electrical Conductivity** | ~ 35-40 % IACS | ~ 35-40 % IACS | | **Thermal Conductivity** | 130 - 140 W/m·K | 900 - 970 BTU·in/(hr·ft²·°F) | | **Coefficient of Thermal Expansion** | 23.9 x 10⁻⁶ /K | 13.3 x 10⁻⁶ /°F | | **Modulus of Elasticity** | 70 GPa | 10,000 ksi | --- #### **3. Mechanical Properties (Typical for H111 / H112 Tempers)** The mechanical properties vary depending on the temper (strain-hardened state). The following are typical for the commonly supplied O, H111, and H14 tempers. | Temper | Tensile Strength | Yield Strength (0.2% Offset) | Elongation (%) | |---|---|---|---| | **O (Annealed)** | 170 - 210 MPa | 70 - 100 MPa | 20 - 25% | | **H111 (Annealed & Slightly Strain-Hardened)** | 190 - 240 MPa | 80 - 120 MPa | 18 - 22% | | **H14 (Strain-Hardened)** | 240 - 290 MPa | 190 - 230 MPa | 8 - 12% | --- #### **4. International Standards** Aluminum 6253 is recognized and specified under various international standards: * **ISO:** **AlMg1,5Cr (EN AW-6253)** under ISO 209 (Aluminum and aluminum alloys — Chemical composition). * **European Standard (EN):** **EN AW-6253** (formerly known as AlMg1,5Cr) as per EN 573-3. * **UNS:** **A96253** * **ASTM:** While not as commonly referenced as 5052 or 5083 in general ASTM standards, its composition falls within the specifications for Al-Mg alloys in standards like ASTM B928/B928M for sheet and plate. * **National/Regional Equivalents:** It has equivalents in various national standards, such as in China (GB/T). --- #### **5. Product Applications** Thanks to its unique blend of properties, Aluminum 6253 is widely used in: * **Marine Industry:** Hulls, superstructures, decks, and other components for boats and ships due to its exceptional resistance to saltwater corrosion. * **Transportation:** Body panels, flooring, and structural parts for trucks, trailers, and railway cars. * **Pressure Vessels & Tanks:** Suitable for welded structures requiring good strength and corrosion resistance. * **Architectural & Construction:** Roofing, wall cladding, and architectural trims where a good surface finish and durability are required. * **Consumer Durables:** Appliance panels, cooking utensils, and other products that benefit from its formability and surface quality. --- #### **6. Key Advantages & Characteristics** * **Superior Corrosion Resistance:** Excellent performance in marine and industrial atmospheres. * **Good Weldability:** Can be readily welded using common techniques like MIG and TIG. * **High Strength-to-Weight Ratio:** Provides structural integrity without significant weight penalty. * **Excellent Formability:** Easily bent, stamped, and drawn, especially in the O and H111 tempers. * **Good Anodizing Response:** Produces a bright, uniform, and corrosion-resistant anodized layer for aesthetic and protective purposes. **Conclusion:** Aluminum 6253 is a high-performance, non-heat-treatable alloy that offers an optimal balance of strength, corrosion resistance, and manufacturability. Its compliance with major international standards makes it a reliable and specified material for demanding applications across the marine, transportation, and architectural sectors 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 2062 gallon liquid totes Special package is available on request.