The Different Aluminium Finishes and Their Advantages

Powder Coating, Anodising, Polished Finish, Liquid Painting, Better Aesthetic Appeal, Improved Corrosion Resistance, Lower Maintenance Cost explained.

Aluminium is a versatile metal used abundantly, for a wide range of applications. The metal has simplified our daily lives with its number of advantages. Aluminium is a durable material with a great strength-to-weight ratio. The aluminium suppliers in South Africa use several types of finishes to enhance the functionality of the products that have been manufactured using aluminium.

The different aluminium finishes are:

Powder Coating - Powder coating is a finish applied to aluminium to improve durability, make the metal easy to maintain and enhance consistency in colour. Powder coating offers a wide range of colours to choose from. Owing to these advantages, powder coating is applied to aluminium extrusions extensively. However, this finish offers less resistance to fading when compared to other finishes.

Anodising - Anodising is one of the most common processes to be used, offering uncountable advantages. The advantages include a well-maintained appearance, as well as the production of functioning surfaces ideal for various applications. An electrochemical procedure is employed to produce this finish, which provides an additional layer of protection in addition to the natural oxide film of aluminium. A porous layer of anodic oxide is applied for anodising, which is available in a variety of colours.

Polished Finish - The polished finish is a mechanical process that brings a brushed finish to the metal surface. Polishing brings about several advantages such as an enhanced aesthetic, improved reflective properties and ease of cleaning.

Liquid Painting - Liquid painting is available in a variety of attractive colours that enhances the thickness of the metal. This coating usually contains VOCs (Volatile Organic Compounds). A baking process is used to produce the finish. The paint is commonly used for outdoor applications.

Apart from anodising, powder coating and liquid painting, there are several other options to finish the aluminium sheets. These decorative finishes are applied to the aluminium surface to bring a brushed effect.

There are several different advantages to applying these finishes to the material, some of which include:

Better Aesthetic Appeal - The most considerable advantage of aluminium finishes refers to its ability to improve the aesthetic value of the metal. Regardless of whether you require a mirror finish or a textured finish, the overall aesthetic of the metal is sure to improve.

Improved Corrosion Resistance - The aluminium surface has a natural oxide film that protects the metal from corrosion. However, this natural protection is not effective in extreme weather conditions. This is quite essential, especially in alkaline or acidic environments. Surface finishes also play a significant role in providing resistance against scratches.

Lower Maintenance Cost - An increased level of durability, toughness and scratch-resistance make the most of aluminium products. You can experience a longer lifespan of such products and can greatly reduce the maintenance cost. Thereby, making it cost-effective for long-term use.

Finishes on the aluminium surface are suitable for diverse applications like the construction of buildings or in the manufacturing of the interiors of railway coaches. Using finished aluminium extrusions for these applications will provide the appropriate look and the highest degree of corrosion resistance.


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