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The Benefits of Hard Anodising

Newly-opened DECO Industrial is proud to be the only commercial hard anodiser in New South Wales, and one of only a small few Australia-wide. Anodising involves dipping your aluminium components in an electrically-charged solution, converting the surface of the metal itself into a tough, aluminium oxide film. Aluminium is one of the hardest substances known in the world – so making that oxide coat even harder than usual is bound to produce a tough, strong coating for your metal parts. Hard anodising is achieved by lowering the temperature of the acid the parts are dipped into, creating a tougher, denser protective coating that is 50 – 100 microns thick. This extra-strong coat has an array of benefits – find out below what it can do for YOUR aluminium components (or even your building products!)

Hardwearing

A hard anodised coat makes your parts and components ready to handle tough conditions including high-speed mechanisms, extreme weather, temperatures and more. Hard anodising significantly improves wear resistance in aggressive environments, making it an excellent choice for aerospace, high-speed machinery, conveyors and defence applications. A hard anodised coat is formed as part of the metal itself, and will not chip or blister, ensuring it protects your products for longer.

Corrosion-Resistant

The thicker the anodised coating, the better corrosion resistance it will give your part, meaning hard anodising will make your parts safer from rust than ever. By sealing the hard anodising you can further increase the corrosion resistance of your hard anodised components. 

Did you know: Hard anodised components can withstand 1000 hours of salt spray.

Resistant to High Temperatures

Hard anodising is heat resistant up to 800◦C, and 2000◦C in short cycles. The heat resistant nature of hard anodising makes it an excellent choice for coating parts for machines which get hot frequently, as well as firefighting and even cookware applications.

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Non-toxic

Sealed hard anodising is ideal for cookware due to its non-toxic properties. Hard anodising is non-reactive to food and is generally approved for food contact. Its non-toxicity, along with its non-stick and heat resistant properties, are making it an increasingly popular choice for pans and even oven trays. While un-anodised aluminium may react with food when heated, potentially allowing aluminium particles to seep into and contaminate your meal, a hard anodic coating can prevent this from happening, as it keeps the base metal from coming into contact with food.

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Electrical Insulation Qualities

Hard anodising exhibits a high level of electrical resistance, just like porcelain and glass. This means hard anodised coatings are great electrical insulators, and are non-conductors of electricity, making them ideal for electrical isolation applications.

Attractive, Dark Colour

While the aesthetic appeal of your machine parts may not always rank top on your list of priorities, if your hard anodised components are going to be applied somewhere highly visible, it can be a bonus to know they will also look attractive. Hard anodised components are generally a charcoal grey, but by increasing the microns of the coating, a black colour can also be achieved. This can be ideal for increasing the stylish appearance of your machinery, or replicating that traditional cookware look for pots, pans and trays. 

Want to know more about our hard anodising services? Click here. 

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