3003 aluminum sheet is a commonly used aluminum alloy material, belonging to the aluminum-manganese alloy series, containing about 1.0% to 1.5% manganese. 3003 aluminum sheet is widely used in many fields because of its excellent performance and wide applicability.

The following is a detailed explanation of the 3003 aluminum sheet properties:
1. Composition and alloy properties
- Main Composition: The main alloying element of 3003 aluminum alloy is manganese (Mn), the content of which usually ranges from 1.0% to 1.5%. The addition of Mn improves the strength and corrosion resistance of the aluminum alloy.
- Other components: Usually also contains a small amount of silicon (Si), iron (Fe), copper (Cu), magnesium (Mg), zinc (Zn) and other elements.

2. Physical properties
- Density: about 2.73 g/cm³, belongs to the lighter type of aluminum alloy.
- Electrical conductivity: 3003 aluminum alloy has good electrical conductivity, suitable for electrical components.
- Thermal conductivity: It has good thermal conductivity and is suitable for applications requiring good heat dissipation properties.

3. Mechanical Properties
- Strength: The tensile strength of 3003 aluminum alloy is typically in the range of 120-165 MPa, with a yield strength of approximately 95 MPa. Although not as strong as some high strength aluminum alloys, it still has good strength among aluminum alloys.
- Ductility: High ductility and formability make it easy to machine and mold, making it suitable for use in deep-drawing, stretching, and other processes.
- Hardness: lower hardness makes it easier to process.

4. Chemical properties
- Corrosion resistance: 3003 aluminum alloy has good corrosion resistance, especially in wet environment, it can resist most chemicals.
- Oxidizability: It is easy to form a layer of dense oxide film, which further enhances its corrosion resistance.

5. Machinability
- Weldability: 3003 aluminum alloy has good weldability and is suitable for various welding processes.
- Machinability: it is easy to be processed by machining (e.g. cutting, drilling, milling, etc.), and is suitable for manufacturing various shapes of parts.
- Surface treatment: It can be anodized, sprayed and other surface treatments to enhance its aesthetics and durability.

Due to the excellent characteristics of 3003 aluminum sheet, it has a wide range of applications, including but not limited to:
- Construction industry: used for roofing, walling, heat-insulating materials, etc.
- Transportation: used for manufacturing parts of automobiles and ships.
- Home appliance industry: used for the shell and internal structure of refrigerators, air conditioners and other home appliances.
- Food industry: used in the manufacture of food containers, packaging materials, etc.
- Chemical industry: used for storage and transportation of chemicals such as tanks and pipes.

3003 aluminum sheet is an ideal material for a variety of industrial applications due to its good mechanical properties, corrosion resistance and workability. Although it is not as strong as some high-alloyed aluminum, 3003 aluminum sheet is still a very popular choice for many applications that require light weight and corrosion resistance.