What is the difference between aluminum alloy enclosure and stainless steel housing

Release time:

2021-08-25

To understand the difference between aluminum alloy enclosure and stainless steel housing, you must first understand the composition of the two.

What is the difference between aluminum alloy enclosure and stainless steel housing

1. The difference in composition

Stainless Steel housing /enclosure

To understand the difference between aluminum alloy enclosure and stainless steel housing, you must first understand the composition of the two. The main elements of the aluminum alloy enclosure are aluminum, silicon, copper, magnesium, and zinc. According to the content of each element, the performance of the formed aluminum alloy enclosure will be different. Stainless Steel housing is made of steel. In the smelting process, chromium, nickel, manganese, silicon, copper and other metals are added. Chromium is the main alloying element. Generally, the content of chromium in stainless steel is at least 10.5%. Aluminum alloy housing and Stainless Steel housing are different in composition, so many people in life think that stainless steel is aluminum alloy is actually wrong.

2. The difference in weight and hardness

The density of aluminum alloy varies with the addition of alloy elements, generally between 2.5×10? kg/m?—2.8×10? kg/m?, so the aluminum alloy enclosure is lighter than the stainless steel housing in weight, almost One-third of the weight of the Stainless Steel housing, which makes aluminum alloy very suitable for making enclosures for electronic products such as mobile phones, cameras, computers, etc., and has the effect of being thin and portable. The hardness of stainless steel is higher than that of aluminum alloy, and the stainless steel housing is more resistant to scratches and bumps, so it can be applied to medical equipment and chemical testing equipment.

3. The difference in the degree of corrosion resistance

The corrosion resistance of aluminum alloy is due to the corrosion-resistant oxide film on the surface, which can prevent further corrosion of the internal metal. Stainless steel mainly contains corrosion-resistant nickel-chromium alloys. Therefore, when the product application field has corrosion resistance requirements, stainless steel enclosures are the first choice.

4. The difference in heat conduction and heat dissipation capacity

Aluminum alloy and stainless steel have great differences in heat conduction and heat dissipation. The thermal conductivity of aluminum alloy is 238 W/(mK) and the specific heat capacity is 902 J/(kg.K); the thermal conductivity of stainless steel is 15.2 W/(mK) , The specific heat capacity is: 460 J/(kg.K). Therefore, it is not difficult for us to find that aluminum alloy has better thermal conductivity. This is also the reason why products that require heat dissipation such as car radiators, audio radiators, lamp radiators, and household appliances enclosures prefer to use aluminum alloy enclosures.

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