2219 aluminum alloy (AlCu6Mn) is a heat-treatable 2000 series wrought aluminum alloy alloyed primarily with copper (5.8–6.8%), with additions of manganese, vanadium, zirconium, and titanium. It is distinguished from other 2xxx alloys by its exceptional weldability, excellent cryogenic toughness, and high strength retention at elevated temperatures. 2219 is the primary structural alloy for aerospace launch vehicles, cryogenic fuel tanks, and high-temperature structural components. Linsy supplies 2219 aluminum sheet, plate, bar, tube, and forging stock in tempers O, T31, T62, T81, T851, and T8511, with custom sizes, processing support, and MTC reports available.
Formularios disponibles: sheet / plate / coil / bar / tube / forging stock / wire
Temperamentos habituales: O / T31 / T62 / T81 / T851 / T8511
Asistencia técnica: CNC machining / cutting / welding / surface finishing
Documentos de calidad: Informe MTC con cada pedido; informes de ensayo de SGS disponibles previa solicitud
2219 aluminum alloy (UNS A92219) is a precipitation-hardened 2000 series wrought aluminum alloy in which copper is the primary alloying element at 5.8–6.8%. Its European designation is EN AW-2219 / AlCu6Mn, reflecting the dominant copper and manganese content. What sets 2219 apart from other high-strength 2xxx alloys such as 2014 and 2024 is its deliberate addition of vanadium (0.05–0.15%) and zirconium (0.10–0.25%), which form fine dispersoid phases that control grain structure and resist coarsening at elevated temperatures.
2219 is notable for three performance characteristics that make it a preferred alloy in demanding aerospace and cryogenic applications. First, it exhibits exceptional weldability for a 2xxx series alloy — gas tungsten arc welding (GTAW/TIG) and gas metal arc welding (GMAW/MIG) are both practical using 2319 filler wire, producing joints with mechanical efficiency approaching 60–70% of base metal strength. Second, 2219 retains excellent fracture toughness and ductility at cryogenic temperatures down to −252 °C (−423 °F), making it suitable for liquid oxygen and liquid hydrogen fuel tank applications. Third, the alloy maintains useful mechanical strength at service temperatures up to approximately 300 °C (570 °F), particularly in the T8-type tempers.
In the T8 temper family (T81, T851, T8511, T87), 2219 develops its highest strength through a sequence of solution heat treatment, controlled cold work, and artificial aging. These tempers also provide excellent resistance to stress corrosion cracking (SCC). The alloy is covered under AMS 4066 (plate and sheet), AMS 4143 (bar and rod), and AMS 4162/4163 (forgings), with additional coverage under ASTM B209, B211, and B221 for general product forms.
Linsy supplies 2219 aluminum alloy in a range of standard and custom product forms. Length, width, diameter, and dimensional tolerances can be tailored to your project requirements.
| Formulario | Temple | Espesor (mm) | Anchura (mm) | Longitud (mm) |
|---|---|---|---|---|
| 2219 Sheet / Coil | O, T31, T81, T851 | 0.3 – 6.0 | 500 – 2600 | 500 – 16000 |
| Formulario | Temple | Espesor (mm) | Anchura (mm) | Longitud (mm) |
|---|---|---|---|---|
| 2219 Plate | O, T62, T81, T851 | 6.0 – 200 | 500 – 2600 | 500 – 12000 |
| Formulario | Temple | Diámetro (mm) | Longitud (mm) |
|---|---|---|---|
| 2219 Bar (Round) | O, T62, T851, T8511 | 10 – 500 | 1000 – 6000 |
| Formulario | Temple | Diámetro exterior (mm) | ID (mm) | Longitud (mm) |
|---|---|---|---|---|
| 2219 Tube | O, T62, T851, T8511 | 10 – 500 | 5 – 450 | 1000 – 6000 |
| Formulario | Temple | Diámetro (mm) | Longitud (mm) |
|---|---|---|---|
| 2219 Forging Stock | O, T62 | 20 – 600 | 500 – 6000 |
| Formulario | Temple | Diámetro (mm) | Weight / Coil |
|---|---|---|---|
| 2219 Wire | O, T62 | 0.8 – 30 | Mín. 50 kg |
Length, width, diameter, and dimensional tolerances can be customized. Contact us with your drawing or specification for 2219 aluminum profiles, custom forging preforms, or engineered plates with tight compositional controls.
| Elemento | Composition (wt%) |
|---|---|
| Cobre (Cu) | 5.8 – 6.8 |
| Manganeso (Mn) | 0.20 – 0.40 |
| Vanadio (V) | 0.05 – 0.15 |
| Circonio (Zr) | 0.10 – 0.25 |
| Titanio (Ti) | 0.02 – 0.10 |
| Silicio (Si) | 0,20 Máx. |
| Hierro (Fe) | 0.30 Max |
| Magnesio (Mg) | 0,02 Máx |
| Zinc (Zn) | 0,10 Máx |
| Others, Each | 0,05 Máx |
| Others, Total | 0,15 Máx |
| Aluminio (Al) | Saldo |
Values below are typical for 2219 aluminum in common tempers. Actual properties depend on product form, section thickness, and processing history. Contact Linsy for specification-grade data for your specific order.
| Propiedad | Valor típico |
|---|---|
| Resistencia a la tracción, última | ~170 MPa |
| Tensile Strength, Yield (0.2% offset) | ~75 MPa |
| Alargamiento | ~18% |
| Dureza (HB) | ~45 |
| Propiedad | Valor típico |
|---|---|
| Resistencia a la tracción, última | ~400 MPa |
| Tensile Strength, Yield (0.2% offset) | ~290 MPa |
| Alargamiento | ~10% |
| Dureza (HB) | ~110 |
| Propiedad | Valor típico |
|---|---|
| Resistencia a la tracción, última | ~455 MPa |
| Tensile Strength, Yield (0.2% offset) | ~380 MPa |
| Alargamiento | ~10% |
| Dureza (HB) | ~130 |
| Propiedad | Valor típico |
|---|---|
| Resistencia a la tracción, última | ~455 MPa |
| Tensile Strength, Yield (0.2% offset) | ~380 MPa |
| Alargamiento | ~10% |
| Dureza (HB) | ~130 |
| Temple | Lo mejor para | Aplicaciones típicas |
|---|---|---|
| 2219-O | Maximum ductility and formability. Starting condition for forming, bending, and subsequent heat treatment. | Forming operations, welding filler base, machining stock prior to precipitation hardening |
| 2219-T31 | Solution heat-treated and naturally aged with light cold work. Used for parts requiring moderate strength before final artificial aging. | Intermediate temper for parts that will be further processed or re-heat-treated |
| 2219-T62 | Solution heat-treated and artificially aged without prior cold work. Standard temper for plate and bar requiring good strength with uniform properties. | Structural plates, machined components, aerospace brackets and fittings |
| 2219-T81 | Solution heat-treated, cold worked (~3%), then artificially aged. Higher strength than T62 with excellent SCC resistance. | Aerospace structural components, fuel tank skins, high-strength machined parts |
| 2219-T851 | Solution heat-treated, stress-relieved by stretching, then artificially aged. Provides dimensional stability for thick plate machining. | Thick plate for precision-machined aerospace components, cryogenic tank structure, tooling plates |
| 2219-T8511 | Solution heat-treated, stress-relieved by stretching and compressing, then artificially aged. Preferred for extruded bar and tube. | Extruded bars and tubes for precision-machined components requiring tight tolerances |
| Estándar | Denominación |
|---|---|
| UNS | A92219 |
| EN / European | EN AW-2219 / AlCu6Mn |
| AMS (Aerospace Material Specification) | AMS 4066 (plate & sheet), AMS 4143 (bar & rod), AMS 4162 (forgings), AMS 4163 (die forgings) |
| ASTM | ASTM B209 (sheet / plate), B211 (bar / rod), B221 (extruded profiles) |
| Federal Specification (Legacy) | QQ-A-250/30 |
Unlike most 2000 series alloys, 2219 is highly weldable. Using 2319 filler wire, gas tungsten arc welding (GTAW/TIG) and gas metal arc welding (GMAW/MIG) produce sound welds with mechanical efficiency of approximately 60–70% of base metal strength in the as-welded condition, and post-weld solution heat treatment and artificial aging can restore up to 90% of base metal properties. This weldability is a critical reason 2219 was selected as the primary structural alloy for the Space Shuttle external tank and modern launch vehicles — large welded structures require reliable, inspectable joints.
2219 aluminum retains excellent fracture toughness and ductility at cryogenic temperatures down to −252 °C (−423 °F), the temperature of liquid hydrogen. Unlike many alloys that become brittle at extreme low temperatures, 2219 actually maintains or slightly improves its toughness in cryogenic conditions. This makes it the preferred material for liquid oxygen (LOX) and liquid hydrogen (LH2) propellant tanks, cryogenic piping, and space launch vehicle structures.
2219 maintains useful mechanical strength at service temperatures up to approximately 300 °C (570 °F). The vanadium and zirconium additions form fine Al₃(V,Zr) dispersoid phases that pin grain boundaries and resist coarsening under thermal exposure. In the T8-type tempers (T81, T851, T87), 2219 provides the best combination of elevated-temperature strength and stress corrosion cracking resistance.
In the T8 temper family, 2219 exhibits excellent resistance to stress corrosion cracking (SCC). The controlled cold work applied between solution heat treatment and artificial aging modifies the precipitate structure and residual stress distribution, significantly reducing SCC susceptibility compared to the T6 temper. This is particularly important for aerospace structural applications where long service life under load is required.
2219 has fair general corrosion resistance, typical of high-copper 2xxx series alloys. It is less corrosion-resistant than 5xxx and 6xxx series alloys. For applications exposed to corrosive environments, protective coatings or Alclad treatment may be specified. The alloy’s resistance to stress corrosion cracking in T8 tempers, however, is superior to that of 2024-T3, making 2219 a preferred choice for structurally loaded aerospace components.
In the T8 temper condition, 2219 offers good machinability with carbide tooling. It produces well-broken chips and accepts fine surface finishes. The O temper is softer and produces longer chips — machining in the O condition is possible but less efficient. For precision-machined components, T851 plate or T8511 extruded bar are recommended for their dimensional stability under machining stress.
| Industria | Aplicaciones típicas | Why 2219 Is Used |
|---|---|---|
| Aerospace & Space Launch | Launch vehicle fuel tanks (LOX/LH2), space shuttle external tank, rocket motor casings, structural fuselage components, wing panels | Exceptional weldability for large tank structures; cryogenic toughness for liquid propellant storage; high strength-to-weight ratio; AMS 4066 qualified |
| Cryogenic Systems | Cryogenic pressure vessels, LOX/LH2 storage tanks, cryogenic piping and fittings, cold-box structures | Maintains ductility and fracture toughness at −252 °C; reliable welded joint performance at cryogenic temperatures |
| Defense & Military | Military vehicle armor components, missile structural parts, defense platform structural assemblies | High strength in T8 tempers, SCC resistance, and proven ballistic performance in specific configurations |
| High-Temperature Structural | High-temperature brackets, engine structural components, heat exchanger housings, thermal protection system supports | Strength retention up to ~300 °C; V and Zr dispersoid phases resist microstructural coarsening under thermal cycling |
| Welded Structures & Pressure Vessels | Welded pressure vessels, large structural assemblies, welded tubular frameworks | One of the most weldable 2xxx alloys — 2319 filler produces joints with high mechanical efficiency and inspectable quality |
| Proceso | Suitability | Notas |
|---|---|---|
| CNC Machining | Bien | Best results in T851 or T8511 tempers using carbide tooling with positive rake angles and adequate coolant. O temper produces longer chips and is less efficient for machining. |
| Welding (TIG / MIG) | Excelente | 2219 is one of the most weldable 2xxx alloys. Use 2319 filler wire for best joint efficiency. Post-weld solution heat treatment and artificial aging can restore up to 90% of base metal properties. This is a key advantage of 2219 over 2024 and 2014. |
| Friction Stir Welding | Excelente | FSW produces high-quality joints in 2219 with minimal distortion and no filler material required. Used extensively in aerospace tank manufacturing. |
| Forging | Bien | 2219 can be forged in the O temper. Solution treatment and artificial aging after forging achieve T62 or T81 properties per AMS 4162/4163. |
| Anodizado | Moderado | High copper content limits anodizing response. Hard anodizing is possible but may produce a darker, less-uniform finish than 6061 or 5052. Chromate conversion coating is an alternative for corrosion protection. |
| Polishing | Bien | Mechanical polishing achievable. Surface should be protected with coating in corrosive environments. |
Every 2219 aluminum order from Linsy includes a Mill Test Certificate (MTC) documenting chemical composition and mechanical properties for your specific batch. Additional documentation and testing services are available on request:
| Propiedad | 2219 | 2024 |
|---|---|---|
| Elementos de aleación primarios | Cu + Mn + V + Zr + Ti | Cu + Mg + Mn |
| Soldabilidad | Excellent (TIG/MIG with 2319 filler) | Poor (hot cracking susceptibility) |
| Cryogenic Toughness | Excellent (down to −252 °C) | Good but not optimized for cryogenic use |
| Room-Temp Strength (peak temper) | ~455 MPa UTS (T81/T851) | ~470 MPa UTS (T3/T351) |
| High-Temp Strength | Good (up to ~300 °C) | Limited (softens above ~150 °C) |
| SCC Resistance (T8) | Excelente | Good (T81); fair (T3) |
| Uso típico | Launch vehicles, cryogenic tanks, welded structures | Aircraft fuselage skins, wing structures, fittings |
For a comprehensive guide covering 2219 properties, processing, and procurement considerations, read our 2219 alloy guide.
Linsy Aluminum is a Shenzhen-based aluminum factory with more than 20 years of industry experience, specializing in a full range of aluminum alloys across the 1000–8000 series. We supply 2219 aluminum in multiple product forms — sheet, plate, bar, tube, forging stock, and wire — with standard and custom sizes to match project specifications.
What sets Linsy apart for 2219 aluminum procurement:
Contact us with your 2219 aluminum specification or drawing for a quote — our engineering team provides same-business-day response for standard inquiries.
2219 aluminum is primarily used in aerospace and space launch applications, including launch vehicle propellant tanks (liquid oxygen and liquid hydrogen), rocket motor casings, and structural fuselage components. It is also used for cryogenic pressure vessels, welded structural assemblies, and high-temperature structural components. Its unique combination of weldability, cryogenic toughness, and high-temperature strength makes it the preferred alloy for these demanding applications.
Yes. 2219 is one of the most weldable 2000 series aluminum alloys — a key advantage over 2024 and 2014. Using 2319 filler wire, both TIG (GTAW) and MIG (GMAW) welding produce sound joints with approximately 60–70% of base metal strength in the as-welded condition. Post-weld solution heat treatment and artificial aging can restore up to 90% of base metal properties. Friction stir welding (FSW) is also widely used for 2219 in aerospace tank manufacturing.
T62 is solution heat-treated and artificially aged without prior cold work, providing good strength with uniform properties. T851 is solution heat-treated, stress-relieved by stretching (typically 1.5–3% permanent set), then artificially aged. The stretching operation relieves internal residual stresses, providing superior dimensional stability during machining — making T851 the preferred temper for thick plate that will be precision-machined into aerospace components.
2219 aluminum retains excellent fracture toughness and ductility at cryogenic temperatures down to −252 °C (−423 °F), the temperature of liquid hydrogen. Unlike many structural alloys that become brittle at extreme low temperatures, 2219 maintains or slightly improves its toughness under cryogenic conditions. Combined with its exceptional weldability — essential for constructing large sealed tank structures — 2219 is the preferred material for liquid propellant tanks in launch vehicles.
2219 and 2024 are both high-strength 2xxx series copper alloys, but they serve different purposes. 2024 is slightly stronger at room temperature (~470 MPa vs ~455 MPa UTS) and is preferred for aircraft fuselage skins and wing structures. 2219 offers superior weldability, cryogenic toughness, high-temperature strength (up to ~300 °C), and better SCC resistance in T8 tempers — making it the choice for launch vehicles, cryogenic tanks, and welded aerospace structures.
2219 aluminum is covered under multiple AMS specifications: AMS 4066 (plate and sheet), AMS 4143 (bar and rod), AMS 4162 (hand forgings), and AMS 4163 (die forgings). ASTM standards include B209 (sheet/plate), B211 (bar/rod), and B221 (extruded profiles). The UNS designation is A92219, and the European equivalent is EN AW-2219 / AlCu6Mn.
2319 filler wire is the recommended filler for welding 2219 aluminum. It is closely matched to the base metal composition (Cu ~6.0%, with Mn, V, and Zr additions), providing good weld metal compatibility and joint mechanical properties. For applications requiring post-weld heat treatment, 2319 filler allows the welded joint to respond to solution treatment and artificial aging, restoring up to 90% of base metal strength.
Yes. Linsy supplies 2219 aluminum forging stock in the O-temper condition, typically in bar or billet form with diameters from 20 mm to 600 mm. Forging stock can be cut to your specified length and supplied with MTC documentation. Contact us with your forging preform dimensions and target temper specification for a quote.
2219 aluminum maintains useful mechanical strength at service temperatures up to approximately 300 °C (570 °F). The vanadium and zirconium additions form fine dispersoid phases that resist grain boundary coarsening under thermal exposure. For sustained high-temperature service, the T8 temper family (T81, T851, T87) provides the best combination of elevated-temperature strength and stress corrosion cracking resistance.
Every 2219 aluminum order from Linsy includes a Mill Test Certificate (MTC) that documents the chemical composition and mechanical properties of your specific production lot. Additional documentation available on request includes SGS test reports (chemical composition, mechanical properties, ultrasonic inspection for thick plate and forging stock, RoHS/REACH compliance, and dimensional verification reports).
Yes. AlCu6Mn is the European designation for 2219 aluminum alloy under the EN 573-3 naming convention. The designation refers to its primary alloying elements: aluminum-copper-manganese. The UNS equivalent is A92219, and the alloy is also specified under AMS 4066 (plate/sheet), AMS 4143 (bar/rod), and AMS 4162/4163 (forgings). All nomenclature refers to the same material.
Linsy supports both large-volume and low-MOQ orders. Standard specifications can be ordered in small quantities from stock. For custom specifications, we offer low-MOQ production to support project-based needs and prototyping. Contact us with your specification to confirm availability and minimum quantities for your specific 2219 aluminum requirements.
Yes, samples are available for evaluation. Standard sample dimensions are provided free of charge; customer covers freight cost for shipping from our Shenzhen facility. Custom-dimension samples may involve a nominal preparation fee. Contact our team with your sample requirements.
We accept T/T (wire transfer) and L/C (Letter of Credit). Standard payment terms are discussed during quotation. For new customer relationships, we offer flexible terms to help establish long-term supply partnerships.
Linsy exports aluminum products to markets across Europe, North America, South Africa, Brazil, Singapore, Turkey, Japan, South Korea, and other regions. We arrange international freight with major carriers and can accommodate CIF, FOB, and EXW delivery terms based on your preference.
Send your specification — alloy, temper, product form, dimensions, and quantity — via our contact form or email. Our engineering team typically responds within one business day with pricing, availability, and lead time information.
Ventajas de Linsy
Linsy Aluminum es un proveedor líder de productos de procesamiento de aluminio, que presta servicio a diversas industrias, como la aeroespacial, la ingeniería general, la automoción, la marina, la construcción naval y otras aplicaciones industriales especializadas.
Nos comprometemos a mantener los más altos estándares de calidad y responsabilidad medioambiental, como demuestran nuestras certificaciones: ISO 9001:2008， ISO 14001:2004 y SGS.
