The characteristics of 1100 H22 aluminum alloy are high machinability, medium strength, and excellent corrosion resistance. It is suitable for applications that do not require extremely high strength but need good corrosion resistance, such as heat exchangers, signage, and decorative parts. Its unique H22 temper allows the alloy to balance strength and formability to some extent, making it a well-rounded aluminum material.
1100 aluminum alloy is an alloy of aluminum with small amounts of other elements, such as copper, magnesium, manganese, silicon, and iron. The main component is pure aluminum (with an aluminum content of more than 99%). It belongs to the pure aluminum type in the aluminum alloy series, which has high electrical and thermal conductivity but relatively low strength. The exact chemical composition may vary depending on the standard, but the typical 1100 aluminum alloy contains no less than 99% aluminum.
| Si | Fe | Cu | Mn | Zn | Others | Al |
| 0.95% max | 0.40% max | 0.05% max | 0.05% max | 0.10% max | 0.05% max | 99.00% min |
1100 H22 aluminum is a special heat treatment temper of 1100 aluminum alloy. The alloy undergoes a two-step process: first, it is cold-worked (strain-hardened) to increase its strength, then partially annealed (softened) to provide good machinability and a certain level of strength.
Mechanical Properties: The strength of 1100 H22 aluminum lies between the annealed (O) and full-hard (H28) states. Its hardness and strength are about a quarter of those in these two states, making it suitable for applications requiring moderate strength and a certain degree of formability.
Corrosion Resistance: Due to the high purity of 1100 aluminum, it has excellent corrosion resistance. Whether in marine or industrial environments, 1100 aluminum shows very good oxidation resistance, making it especially suitable for applications exposed to moist or corrosive media (such as saltwater, acid rain, etc.).
Strength
1100 H22 aluminum has medium strength, lying between the annealed (O) and full-hard (H28) states, about a quarter of their strength. This makes it highly practical for applications requiring a certain strength without being too rigid, suitable for forming and processing.
Corrosion Resistance
This aluminum alloy has excellent corrosion resistance, able to resist oxidation and corrosion in a variety of environments, making it ideal for outdoor and humid applications.
Machinability
1100 H22 aluminum has excellent machinability, easy to process with various techniques such as stamping, bending, and welding. This flexibility makes it ideal for manufacturing processes, able to meet different design requirements.
1100 H22 aluminum alloy has excellent processing properties, suitable for various traditional methods like cold forming, milling, stamping, and deep drawing. The partial annealing process allows the alloy to maintain proper strength while retaining good machinability, making it outstanding for applications requiring shaping and forming.
Due to its medium strength and excellent corrosion resistance, 1100 H22 aluminum is widely used in fields that do not require very high strength but need good machinability and corrosion resistance.
| Application | Description |
| Heat Exchangers | 1100 H22 aluminum alloy is widely used in the manufacture of heat exchangers due to its good thermal conductivity and medium strength. In cooling systems, aluminum’s high thermal conductivity helps improve heat exchange efficiency, making it an ideal material for air conditioners, condensers, radiators, and similar equipment to enhance heat dissipation. |
| Signage and Advertising Boards | 1100 H22 aluminum alloy, with its excellent formability and outstanding corrosion resistance, is the preferred material for outdoor signage, advertising boards, and road signs. It can withstand harsh weather conditions without easily corroding or fading, and it is easy to process and form, making it suitable for complex signage designs. |
| Kitchenware | 1100 H22 aluminum alloy is used in kitchenware, especially aluminum cookware and utensils, due to its high machinability and moderate strength. Its excellent thermal conductivity ensures even cooking, while its corrosion resistance and oxidation resistance ensure stability and safety during long-term use. |
| Decorative Applications | In the construction and automotive industries, 1100 H22 aluminum alloy is widely used for exterior facades and vehicle body trims. Its corrosion resistance ensures long-term use in harsh weather conditions, while its excellent machinability allows it to be shaped into decorative components with intricate details, combining aesthetics and practicality. |
| Aerospace and Transportation | In the aerospace and transportation sectors, 1100 H22 aluminum alloy is used for manufacturing certain non-load-bearing structural components on the exterior of aircraft. Its lightweight, corrosion resistance, and moderate strength make it widely used in aircraft exteriors, wing components, and other non-critical structures, ensuring cost-effectiveness while meeting performance requirements. |
| Containers and Packaging | 1100 H22 aluminum alloy is widely used in the manufacture of aluminum food packaging, foil wraps, and containers due to its excellent corrosion resistance and machinability. Its lightweight and recyclable properties make aluminum the preferred material for packaging in the food, beverage, and consumer goods sectors, effectively protecting contents while being economically and environmentally friendly. |
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