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6 October 2023

What is the Best Steel for a Retaining Wall?

When it comes to building a retaining wall, the choice of material is crucial. Among the various options available, steel is a popular choice due to its strength, durability, and versatility. However, not all types of steel are suitable for retaining walls. In this week’s MAH Steel blog, we will explore the best steel for retaining walls and help you make an informed decision.

Before we dive into the best steel for retaining walls, let’s take a look at the factors that you should consider when selecting a steel for your project:


A retaining wall needs to be able to withstand significant amounts of pressure from the soil behind it. Therefore, the steel used in the wall must have high tensile strength to prevent collapse or deformation.

Corrosion Resistance

Retaining walls are often exposed to moisture and salt, which can cause corrosion and weaken the steel over time. Therefore, it’s essential to choose a steel that has good corrosion resistance.


A retaining wall is expected to last for many years, so the steel used in its construction must be durable and able to withstand the elements.


While it’s important to prioritise strength, corrosion resistance, and durability, it’s also essential to consider the cost of the steel. The chosen steel should provide the necessary characteristics at a reasonable price, which at MAH Steel, we offer great prices across all of our steel products.

Best Steel for Retaining Walls

Now that we’ve discussed the factors to consider, let’s take a look at the best steel for retaining walls:

Galvanised Steel

Galvanised steel has a layer of zinc coating, which provides excellent corrosion resistance. It’s also strong and durable, making it a popular choice for retaining walls. Galvanised steel is available in various thicknesses and steel fabricators can bend or shape it to fit the required dimensions.

Stainless Steel

Stainless steel is another great option for retaining walls. It’s highly resistant to corrosion and has a long lifespan. There are different grades of stainless steel available, so make sure to choose one that meets your budget and has the necessary strength and durability. Stainless steel is also easy to clean and maintain, making it a great choice for retaining walls in high-traffic areas.

Corten Steel

Corten steel is a type of weathering steel that’s designed to withstand exposure to the elements. It has a natural rust finish that blends in with the surrounding landscape, making it a popular choice for outdoor structures like retaining walls. Corten steel is strong, durable, and resistant to corrosion, making it an excellent choice for retaining walls in harsh environments.

Structural Steel

Structural steel is a high-strength, low-alloy steel that’s commonly used in construction projects. It’s strong, durable, and resistant to corrosion, making it a great choice for retaining walls. Structural steel can be customized to fit the required dimensions and is available in various thicknesses.

Choosing the right steel for a retaining wall is critical to ensure its stability and longevity. Galvanised steel, stainless steel, corten steel and structural steel are among the best options for retaining wall steel types. Each of these steels offers unique benefits, including high strength, corrosion resistance, durability, and cost-effectiveness. By considering the factors mentioned above and selecting the appropriate steel, you can build a retaining wall that will stand the test of time.

Should you be in the process of planning a project that involves the construction of a retaining wall or any other steel fabrication endeavour, we invite you to reach out to us at MAH Steel. Our commitment to providing the best prices and unparalleled service in the industry makes us the ideal partner for your upcoming construction or fabrication needs.

At MAH Steel, we understand the importance of quality, precision, and efficiency in all projects, and we are well-equipped to meet and exceed your expectations. Our team of experienced professionals is dedicated to delivering exceptional results. We ensure that your project is not only cost-effective, but also completed to the highest standards. By choosing MAH Steel, you can rest assured that your project will benefit from our extensive expertise, state-of-the-art technology, and a steadfast commitment to client satisfaction. Our mission is to be your trusted partner in steel fabrication, offering competitive pricing and a level of service that sets the industry standard.

When you engage with MAH Steel, you’re not just selecting a steel fabrication service. You’re choosing a reliable, professional partner that values your goals and delivers on its promises. 

Seeking for the best steel fabricator for your unique steel fabrication project?

Contact us today to discuss your project requirements.