5251 Aerospace Aluminum Tube
5251 Aluminum Tube (EN AW-5251) is a medium-strength alloy offering excellent corrosion resistance, high fatigue strength, and good weldability. With a density of 2.68 g/cm³ and tensile strength ranging from 210–250 MPa, this alloy provides an ideal balance of strength and formability. It is widely used in the marine industry, automotive fuel tanks, pressure vessels, and structural applications where durability and lightweight properties are required. Our 5251 aluminium tubes are available in seamless and extruded forms, with customizable sizes and tempers (O, H22, H24, H32) to meet diverse project requirements. Fast delivery and strict ISO-certified quality ensure reliable performance for global clients.
| Specifications of 5251 Aluminum Tubing |
| Grade | 5251 |
| Standard | BS EN 485-2 BS EN 754-2 ASTM B241/B241M |
| Sizes | 1/8″ – 16″ (3mm – 2500mm) OD .020″ – 2″ (.2mm – 150mm) wall (1m-12m) Length |
| Technology |
Hot rolled plate (HR), Cold rolled sheet (CR), 2B, 2D, BA NO(8), SATIN (Met with Plastic Coated) |
| Form | seamless, drawn and coiled Tubing |
| Temper | O, H22, H32, H34, H111 |
| Surface | Anodized, Oxidation, electrophoresis coating, fluorine carbon spraying |
| CHEMICAL COMPOSITION OF 5251 aluminum seamless tube |
| Grade | Al | Mg | Si | Cu | Zn | Ti | Mn | Fe |
| 5251 | bal | 1.7-2.4 | 0.4 | 0.15 |
0.15 |
0.15 |
0.1-0.50 |
0.50 |
| 5251 Alloy Aluminum Pipe Mechanical Properties |
| Density | 2.68 g/cm3 |
| Melting point | 607°C |
| Linear expansion coefficient | 24.2×10^-6 /K |
| Thermal conductivity | 133 W/(m·K) |
| specific heat capacity | 0.897 J/(g·K) |
| Resistivity | 0.049 Ω·mm2/m |
| Elastic Modulus | 70.3 GPa |
| Tensile Strength | ≥165 MPa |
| Yield Strength | ≥65 MPa |
| Elongation | ≥15% |
| Features of 5251 aerospace aluminum tube: |
1.Corrosion Resistance:
Alloying elements such as magnesium and chromium give 5251 aluminum tubes excellent resistance to corrosion, making them highly reliable in aggressive environments including seawater and chloride-rich conditions.
2.Weldability:
These tubes can be easily joined using a wide range of conventional welding techniques such as TIG, MIG, gas-shielded welding, and plasma welding, ensuring flexibility in fabrication.
3.Workability:
5251 aluminum tubing offers outstanding machinability and can be formed into various shapes and dimensions through processes like stretching, cold drawing, and rolling.
4.Strength:
Compared to many standard aluminum alloys, 5251 delivers higher strength, making it suitable for components that demand both durability and load-bearing capacity.
5.Plasticity:
With excellent cold and hot working properties, 5251 tubes maintain good plasticity, allowing them to be reshaped and adapted to meet diverse application requirements.
| Key Considerations When Purchasing 5251 Aerospace Aluminum Tubes: |
1.Select a reliable supplier: Work with a supplier that has a solid reputation, proven capabilities, and consistent product quality. This helps avoid counterfeit or substandard aluminum tubes offered by less trustworthy vendors.
2.Verify material quality: Carefully review the alloy’s chemical composition, mechanical properties, and surface finish to ensure the tubes meet the required standards for your application.
3.Check dimensional accuracy: Precision in diameter, wall thickness, and tolerance is critical. Inaccurate dimensions can compromise performance and compatibility in aerospace applications.
4.Evaluate packaging methods: Proper packaging is essential to protect aluminum tubes from damage during storage and transportation. Ensure the supplier uses packaging suited to your logistics needs.
5.Review after-sales support: Reliable technical support and responsive after-sales service are valuable in addressing potential quality concerns or usage issues after delivery.
| Why choose us: |
1. You can get the perfect material according to your requirement at the least possible price.
2. We also offer Reworks, FOB, CFR, CIF, and door to door delivery prices. We suggest you to do deal for shipping which will be quite economical.
3. The materials we provide are completely verifiable, right from raw material test certificate to the final dimensional statement.(Reports will show on requirement)
4. We guarantee to give a response within 24hours(usually in the same hour)
5. You can get stock alternatives, mill deliveries with minimizing manufacturing time.
6. We are fully dedicated to our customers. If it will not possible to meet your requirements after examining all options, we will not mislead you by making false promises which will create good customer relations.
| Aluminum pipe packing: |
1. Packing is quite important especially in a case of international shipments in which consignment pass through various channels to reach the ultimate destination, so we put special concern regarding packaging.
2. Sasa aluminum’s pack our goods in numerous ways based on the products. We pack our products in multiple ways, such as
