Which is better, aluminum alloy casing or stainless steel casing? The excellent characteristics of aluminum and its alloys are their good appearance, light weight, processability, good physical and mechanical properties, and good corrosion resistance. Therefore, aluminum and its alloys are considered the most economical and practical in many application fields. The density of aluminum is only 2.7g/cm3, which is about one-third of that of steel, copper, or brass (7.83g/cm3 and 8.93g/cm3, respectively). Under most environmental conditions, including air, water (or salt water), petrochemicals, and many chemical systems, aluminum can exhibit excellent corrosion resistance.
The surface of aluminum is highly reflective. Aluminum can effectively reflect radiant energy, visible light, radiant heat, and radio waves, while anodized and dark anodized surfaces can reflect or absorb. Polished aluminum has excellent reflectivity over a wide wavelength range, making it suitable for various decorative purposes and reflective functions.
Aluminum typically exhibits excellent conductivity and thermal conductivity, and some special aluminum alloys with high electrical resistivity have also been successfully developed. For example, these alloys can be used for high torque motors. Aluminum is usually selected for its excellent conductivity. On the basis of equal weight, the conductivity of aluminum is almost twice that of copper. The thermal conductivity of aluminum alloy is about 50-60% of that of copper, which is beneficial for manufacturing heat exchangers, evaporators, heating appliances, cookware, car cylinder heads, and radiators.
Aluminum is non ferromagnetic, which is an important feature of the electrical and electronic industries. Aluminum does not self ignite, which is crucial for applications involving handling or contact with flammable and explosive materials. Aluminum is non-toxic and is commonly used in containers for making food and beverages. Its natural surface state has a pleasant appearance. It is soft and glossy, and for aesthetics, it can be colored with texture patterns.
Which is better, aluminum alloy casing or stainless steel casing? I believe we already know that some aluminum alloys surpass structural steel in strength, but pure aluminum and some aluminum alloys have extremely low strength and hardness. In modern life, aluminum has been widely used in various industries.