Aluminium alloy 2219 is a durable and robust with numerous engineering and fabrication applications. It is used for components that require strength and corrosion resistance, such as aerospace structures, fuel tanks, and chemical processing equipment. This article will provide an overview of the composition, properties, heat treatment requirements, machining possibilities and welding techniques associated with Aluminium Alloy 2219.
Aluminium 2219 Composition
UNS A92219 is composed of 92.5% aluminium (Al), 6.3% copper (Cu), 0.6% manganese (Mn), 0.2% magnesium (Mg), 0.15 zinc (Zn) and 0.05% titanium (Ti). This composition gives it an excellent strength-to-weight ratio and superior corrosion resistance compared to other alloys in many environments.
| Element | Content (%) |
|---|---|
| Aluminum, Al | 93 |
| Copper, Cu | 6.3 |
| Manganese, Mn | 0.3 |
| Zirconium, Zr | 0.18 |
| Vanadium, V | 0.10 |
| Titanium, Ti | 0.06 |
Aluminium 2219 Chemical Properties
Aluminium alloy 2219 has good cold formability due to its low copper content, which helps reduce strain hardening during forming operations such as drawing or bending. The addition of copper also improves the alloy’s resistance to stress corrosion cracking in specific environments due to its ability to form protective oxide layers on the material surface.
Aluminium 2219 Physical properties
Aluminium 2219 is gaining attention in the metalworking industry due to its physical properties that make it an ideal metal for various applications, including aerospace and automotive components. For example, Aluminium 2219 has high mechanical strength, making it well-suited for high-stress areas on vehicles. Additionally, it has excellent corrosion resistance and weldability and is environmentally friendly since it’s lightweight and recyclable. With many production processes taking advantage of its physical attributes, such as cold forming and machining, Aluminium 2219 provides a cost-effective solution for manufacturers requiring high-quality products.
| Properties | Metric | Imperial |
|---|---|---|
| Density | 2.6-2.8 g/cm3 | 0.0939- 0.101 lb/in3 |
| Melting point | 510°C | 950°F |
Aluminium 2219 Mechanical Properties
The mechanical properties of Aluminium Alloy 2219 depend on how it is heat treated. Generally speaking, it exhibits good ductility under annealed conditions while maintaining good strength when aged at elevated temperatures for increased hardness values. Heat treating the material will also increase its fatigue limit, which makes it suitable for applications where cyclic loading is expected, such as aircraft wings or automotive components subjected to repeated stresses during operation.
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength | 170 MPa | 24656 ksi |
| Yield strength | 76 MPa | 1022 ksi |
| Fatigue strength | 105 MPa | 15229 |
| Elastic modulus | 70-80 GPa | 10153-11603 ksi |
| Poisson’s ratio | 0.33 | 0.33 |
| Elongation | 18% | 18% |
Aluminium 2219 Thermal Properties
| Properties | Conditions | ||
|---|---|---|---|
| T (ºC) | Treatment | ||
| Thermal conductivity | 170 W/mK | 25 | |
Aluminium 2219 Equivalent
| AMS 4066 | ASTM B211 | ASTM B247 | MIL A-46808 | QQ A-367 |
| AMS 4068 | ASTM B221 | ASTM B316 | MIL A-8920 | QQ A-430 |
| ASTM B209 | ASTM B241 | MIL A-46118 | QQ A-250\30 | SAE J454 |
Uses
Due to its excellent corrosion resistance properties, aluminium alloy 2219 can be used in medical applications where exposure to aggressive chemicals or saline solutions is common such as hip implants or dental braces. Additionally, the high strength-to-weight ratio offered by this alloy makes it ideal for lighter medical implants than those made from steel or titanium alloys without sacrificing structural integrity or mechanical performance over time.
Corrosion Resistance
Aluminium 2219 is a great choice for applications that require superior corrosion resistance. This grade of aluminium alloy is heat treatable, and its properties include high strength and good machinability. Its primary alloying element, copper, provides excellent corrosion resistance in all environments except a few, like hydrochloric acid and sulfuric acid. All of this makes Aluminium 2219 a preferred material for many applications, especially those that involve long-term use or exposure to harsh external elements. Furthermore, its low weight and high strength make it an attractive choice for many industries.
Heat Resistance
Aluminium 2219 is an alloy of aluminium, copper, manganese, and magnesium that offers impressive heat resistance properties. It has a maximum operating temperature of 500°F, making it suitable for high-temperature applications such as cryogenic vessels and engines. This lightweight alloy is also incredibly strong, possessing superior fatigue strength that can handle the rigours of continuously repeated exposure to high temperatures without affecting its structure. With these combined characteristics, Aluminium 2219 is a reliable product for use in many industrial sectors.
Machining
Aluminium Alloy 2219 can be machined using conventional methods with some difficulty due to its relatively high hardness values compared to other aluminium alloys, but still much easier than machining steel alloys of similar hardness levels thanks to its better thermal conductivity properties, which helps dissipate heat away from the cutting edge more quickly during machining operations reducing wear on tools significantly compared with steel alloys which tend to retain heat in their cutting edges causing premature tool failure when machined at higher speeds or feeds rates during production runs.
Welding Techniques
When welding this material standard GTAW techniques are recommended since GMAW can lead to porosity issues due to its high melting point, making it difficult for flux-cored wires designed for steel alloys unsuitable for welding aluminium materials like this one without significant modifications that may compromise the weld integrity over time due to lack of shielding gas protection from oxygen contamination during welding operations.
Conclusion
Aluminium Alloy 2219 offers excellent strength-to-weight ratios combined with superior corrosion resistance making it an ideal choice for components requiring these characteristics in engineering and fabrication applications requiring lightweight materials that can resist hostile environmental conditions over extended periods without suffering any degradation of performance or structural integrity over time due to exposure factors like moisture or aggressive chemicals commonly found in certain industrial process plants or marine environments where long term reliability of components is paramount when selecting materials suitable for use under these challenging conditions. Furthermore, thanks to its relatively good machinability, even though not comparable with steel and lower cost than titanium alloys, make this material is an attractive option when budget constraints play an important role when designing parts intended for mass production runs requiring long life cycle parts capable performing reliably even after years service under harsh operating conditions while still providing exceptional value per dollar invested into production costs making it an attractive option worth considering when looking into alternatives available on today’s market meeting these criteria.
Abhishek is a seasoned blogger and industry expert, sharing his insights and knowledge on various topics. With his research, Abhishek offers valuable insights and tips for professionals and enthusiasts. Follow him for expert advice on the latest trends and developments in the metal industry.
