Aluminium sheets are incredibly popular thanks to their versatility, strength and durability. On top of this, their average life expectancy can span 50 years or more, making them a great choice for many uses.
The lifespan of an aluminium sheet will vary depending on the environment you are using it in and the level of maintenance provided. However, with several characteristics such as strength, durability and corrosion resistance, you won’t have to worry about replacing the sheet for a while!
The experts at MG Metals have written this informative blog to help you understand how to extend the life of your aluminium sheet and what will shorten their lifespan.
Why Aluminium Sheets Can Last
Aluminium sheets have a number of characteristics that enable them to last a prolonged period.
Strength
Despite being very lightweight, this material is incredibly strong, meaning it is suitable for a wide range of applications. The sheets can withstand a range of mechanical stresses and heavy load-bearing without significant deformation or weakening. This means that it will hold its shape and place for longer despite pressure being put on it.
Corrosion Resistance
Aluminium naturally has an oxide layer, which protects its surface when exposed to oxygen, preventing it from corrosion and rusting. This is because the oxide layer shields the aluminium underneath from moisture, humidity and other environmental factors that cause degradation over time.
Thermal Stability
This metal is a great thermal conductor and remains stable in extreme temperatures. It can withstand temperature fluctuations and thermal expansion without compromising its structural integrity, meaning it will last throughout the seasons or in thermal management applications without being impacted.
Shortening Their Lifespan
The life expectancy of an aluminium sheet can be impacted by a number of elements.
Exposure To Corrosive Substances
Aluminium sheets aren’t completely invincible from corrosion, especially if you expose them to high humidity, saltwater exposure, acidic or alkaline substances, or pollutants. Exposure to such elements can accelerate the rate of deterioration and compromise the structural integrity of the sheet, meaning you will have to replace it sooner.
Excessive Heat Or Cold
Prolonged exposure to extreme temperatures can impact the material, as it can eventually cause expansion, contraction or distortion. High temperatures accelerate the ageing process and reduce their lifespan.
Lack Of Maintenance
As with most things, neglecting an aluminium sheet will cause it to break or weaken, requiring a replacement sooner.
Not maintaining the material will allow dirt, debris or contaminants to gather, which could cause corrosion and other deterioration over time.
Expanding Their Lifespan
While the average life expectancy of aluminium sheets is around 50 years, you can extend their lifespan by looking after the material.
Protect From Excessive Moisture
Where possible, reduce the metal sheet’s exposure to moisture. Keeping the material as dry as possible will help avoid a build-up of mould forming, and reduce the chance of any corrosion.
Large amounts of moisture can damage the protective oxide layer, which will lead to the aluminium underneath being exposed, allowing it to corrode and rust.
Corrosive Chemicals
Similarly, exposure to corrosive chemicals will do the same thing.
Acidic or alkaline substances will penetrate the oxide layer protecting the aluminium material of the sheet, which will then cause damage and impact the structure of the sheet.
Regular Cleaning
Regular cleaning can extend the lifespan of your aluminium sheet because it will remove the dirt and debris that can sit on the material and contribute to corrosion.
Use mild soap and water or a special aluminium cleaner. Don’t use harsh cleaning chemicals or abrasive cleaners because these can scratch and damage the protective layer, exposing the aluminium underneath and risking deterioration.
Protective Coatings
You can also add additional protective coatings to the metal sheet, which will provide another layer of protection over the aluminium, enhancing corrosion resistance.
Options such as anodising, painting, or powder coating can work depending on the use of the sheet.
Aluminium Sheets From MG Metals
MG Metals can provide a range of aluminium sheets in various grades and sizes. We are also able to offer plain or PVC-coated sheets.
We are aluminium suppliers to a range of industries, including aerospace, construction, engineering, medical, education and more.
If you need an aluminium sheet of a specific size, don’t worry! We have a bespoke guillotine service which enables us to cut sheets to the exact measurements you need.
Don’t forget we are able to supply all your metal pieces for your projects, stocking a range of aluminium angles, plates, T sections and tubes, as well as stainless steel sheets, brass, copper and bronze.
Get a free quote online or call us on 01794 521070 today for your metal needs.