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2219 Aluminum Tube is a high-strength, copper-alloyed aluminum tubing widely used in critical aerospace, space, and high-temperature industrial applications due to its superior strength, excellent weldability, and reliable performance under extreme temperature ranges. It belongs to the 2xxx series aluminum alloys (AlCu6Mn / UNS A92219), engineered to withstand elevated stress, resist stress-corrosion cracking, and maintain structural integrity where other aluminum alloys may fail.
2219 Aluminum Tube is a high-strength, copper-alloyed aluminum tubing widely used in critical aerospace, space, and high-temperature industrial applications due to its superior strength, excellent weldability, and reliable performance under extreme temperature ranges. It belongs to the 2xxx series aluminum alloys (AlCu6Mn / UNS A92219), engineered to withstand elevated stress, resist stress-corrosion cracking, and maintain structural integrity where other aluminum alloys may fail.
This alloy is particularly valued for its use in rocket fuel systems, aircraft structures, hydraulic systems in harsh environments, and structural tubing requiring precise dimensions and reliable mechanical properties.
| Product Name | 2219 Aluminum Tube |
| Alloy Grade | 2219 (AlCu6Mn / UNS A92219) |
| Standards / Certification | AMS 4066, AMS 4068, ASTM B241 (custom available) |
| Temper Conditions | O, T31, T351, T3511, T62, T81, T851, T8511 |
| Form / Type | Seamless / Extruded Tubing |
| Outer Diameter (OD) | ~6.35 mm (0.250″) – 635 mm (25″) (typical range) |
| Wall Thickness Range | ~0.71 mm (0.028″) – 76.2 mm (3.0″) (varies by standard) |
| Standard Length | Typically 7.32 m (24 ft) – customizable |
| Surface Finish | Mill finish or customer-specified machining |
| Primary Applications | Aerospace structural tubing, rocket fuel and propellant lines, high-temperature hydraulic systems, welded assemblies |
| Key Advantages | High strength, excellent weldability, good machinability, stress-corrosion resistance |
| Temperature Range | Stable performance from cryogenic to elevated temperatures |
| Chemical Composition Base | ~91.5–93.8% Al, 5.8–6.8% Cu with trace Mn, Si, Ti, V |
