If you’re like most people, you’re probably familiar with rust as a brownish coating that can form on the surface of metal when exposed to the elements over a period of time. It can often be found on any metal object, ranging from outdoor structures to garden tools. While it may seem harmless, rust is actually a type of corrosion that can have a detrimental effect on the lifespan and durability of the underlying metal if it is not properly addressed. In this post, we, therefore, take a closer look at what rust actually is and whether it can be prevented.
What is Rust?
From a chemistry perspective, rust is formed when the iron molecules in a metal containing steel or iron is exposed to oxygen and water. The iron molecules react with the moisture and oxygen in the air to form iron oxide, which is the brownish substance that most people know as rust. While it may initially only affect the surface of the metal and may start off as a cosmetic issue, it can eat into the deeper layers of the underlying metal over time and weaken it.
Can Rust on Steel Be Prevented?
Thankfully, rust on steel can be prevented if you take the right measures. Given that rust forms when the iron molecules react with the atmosphere, the three key ways to prevent rust are to use rust-resistant materials, limit the metal’s exposure to the environment and control the environment so it is less conducive for rust to form.
Using Rust-Resistant Materials
Stainless steel is one of the best rust-resistant materials that you can find on the market. It contains chromium which enables it to resist corrosion and prevents rust from forming on its surface. Alternatively, you can also consider materials such as Corten steel, which is able to form a protective patina that protects the underlying steel from rusting.
Limiting Exposure
If choosing a rust-resistant material is not an option, consider limiting the steel’s exposure to the environment. This can be done by applying a protective coating on the steel’s surface. For a long-lasting coating, consider galvanisation, which coats the steel with a layer of non-reactive zinc.
Controlling the Environment
Last but not least, you can also limit rust by controlling the environment and creating conditions that are not favourable for rust formation. For instance, you can reduce the steel’s exposure to moisture by ensuring that there is proper drainage and ventilation around the steel. You can also use dehumidifiers or moisture barriers in enclosed spaces.
Get Your Rust-Resistant Steel from RW Steel
If you’re looking for rust-resistant steel such as galvanised steel for your next DIY or construction project, RW Steel has you covered. Our extensive catalogue includes a variety of steel products for you to choose from including galvanised steel posts, retaining wall steel H beams and much more. For more information about the products and services we offer, contact us today!