Product details table:

Physical and chemical properties:

Physical properties

Appearance:

It usually presents a silvery white metallic color, with a smooth surface and high gloss. Different surface effects can be obtained through different surface treatment processes, such as mirror polishing, brushing, anodizing, etc. Aluminum plates are lightweight and aesthetically pleasing, making them highly valued in decorative and industrial applications.

Density:

The density of aluminum plates is relatively low, generally around 2.7g/cm³. For example, the density of pure aluminum plates is about 2.7g/cm³, which is significantly lower than stainless steel or other metals, making it ideal for lightweight structural applications.

Melting point:

The melting point is moderate, generally around 660℃. For example, the melting point of pure aluminum is about 660℃, which allows it to maintain stability in moderately high-temperature environments but limits its use in extreme heat conditions.

Coefficient of thermal expansion:

The coefficient of thermal expansion is relatively high. In the range of room temperature to 100℃, the coefficient of thermal expansion of aluminum is about 23.6×10⁻⁶/℃. This feature requires consideration of dimensional changes in environments with significant temperature fluctuations.

Thermal conductivity:

The thermal conductivity is excellent, with a thermal conductivity coefficient of about 205 – 250W/(m・K), which is much higher than stainless steel and comparable to some other metals like copper. This makes aluminum plates highly suitable for heat transfer applications.

Electrical conductivity:

Aluminum has good electrical conductivity, with a conductivity of about 3.77×10⁷ S/m, which is approximately 60% of that of copper. This property makes aluminum plates widely used in electrical and electronic applications.

Chemical properties

Corrosion resistance:

This is one of the most important chemical properties of aluminum plates. A dense oxide film naturally forms on its surface, which prevents oxygen, water, and other corrosive agents from contacting the metal matrix, thereby effectively preventing corrosion. For example, aluminum plates exhibit good corrosion resistance in atmospheric and water environments but may require additional protection in highly acidic or alkaline conditions.

Antioxidation:

Aluminum plates have good oxidation resistance due to the formation of a protective oxide layer on their surface. However, at very high temperatures, aluminum can oxidize more rapidly, so its use in extreme heat environments should be carefully evaluated.

Chemical stability:

In general chemical media, aluminum plates exhibit moderate chemical stability and are resistant to many common chemicals. However, in strong acidic or alkaline environments (such as hydrochloric acid or sodium hydroxide), aluminum plates may suffer from corrosion.

Passivation:

Although aluminum naturally forms an oxide layer, additional treatments such as anodizing can enhance its corrosion resistance and durability. Anodizing involves immersing the aluminum plate in an electrolyte solution and applying an electric current to thicken the oxide layer, improving its performance in harsh environments.

Application:

Aluminum plates are widely used in many fields due to their lightweight, excellent corrosion resistance, and good processing performance. In the construction industry, they are used to manufacture roofing, wall panels, window frames, and decorative elements, combining aesthetics with durability. In transportation, aluminum plates are essential for manufacturing aircraft components, automobile bodies, and railway carriages, reducing weight and improving fuel efficiency. In the electronics industry, they are used for heat sinks, enclosures, and conductive components due to their thermal and electrical conductivity. Additionally, in packaging, aluminum plates are used to produce cans, foils, and containers, meeting hygiene and preservation standards. Their versatility makes aluminum plates indispensable in various industries, adapting well to complex working environments.