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Why Doesn’t Aluminum Sheet Rust?


One: aluminum sheet is not aluminum metal, aluminum sheet

First of all, introduce the concept of aluminum sheet.

Aluminum sheet is not aluminum. It is a sheet made of aluminum with various metal elements added to it. According to the alloy composition, aluminum sheet can be divided into pure aluminum sheet, alloy aluminum sheet and composite aluminum sheet.

Aluminum veneers produced by aluminum veneer manufacturers mostly use 1 series aluminum and 3 series aluminum as the base material.

Among them, 1 series aluminum sheet is also known as pure aluminum sheet, containing more than 99% aluminum. At present, the most widely used series on the market are 1050 (containing more than 99.5% aluminum) and 1060 (containing more than 99.6% aluminum).

The 3 series aluminum sheet is called aluminum manganese alloy, with manganese as the main component, the content is between 1.0-1.5%, better rust prevention function, and the price is higher than that of the 1 series aluminum sheet.


Two: passivation treatment, surface-generated protective layer

Passivation treatment is a common industrial means of metal corrosion prevention. It can form an effective protective layer on the surface of aluminum veneer to protect aluminum veneer products from strong acid and alkali corrosion.