Corten steel is widely used in decoration due to its sturdy natural appearance and original appearance. However, it can be delivered unrusted for practical reasons. We explain how to speed up its corrosion using a simple method to avoid waiting several months.

My previous post mentioned the special characteristics of naturally rusted corten steel. This type of steel is extremely aesthetic and is often used for exterior design. You can find a variety of corten steel objects that have already developed a patina in DIY or gardening stores to decorate your outdoor space. But before it reaches its ultimate appearance, corten steel has no patina, and rust on it takes months to appear and stabilize.

Speaking of Corten Steel, specialized Corten Steel is utilized in proper functioning. Is one leading Manufacturer, Supplier & Stockist Of Corten Steel IRSM 41-97 Plate And Sheet.

This material is essentially the same as weathering steel, which is corrosion-resistant and strong. Corten steel is the ideal material for outdoor architectural and landscaping projects. Often used for its aesthetics, Corten steel will exhibit a patina (rust) that provides a protective layer from corrosion and atmospheric elements. Corten steel’s appeal includes the ability to use the steel in a range of applications without the need for initial painting and maintenance upkeep.

How to Prevent Rust Run-Off

The surfaces below and around weathering steel products and structures are often concrete, stone, or brick, which can be difficult to clean, so it is important to avoid rust run-off and staining. Weathering causes runoff to occur, but it can be managed so that drainage does not flow over vulnerable areas. 

In order to prevent staining from initial run-off, gravel borders can be installed around the weathered steel structure to catch the run-off and prevent it from running over permanent surfaces like concrete or stone. 

By pre-patinating the weathering steel with an acidic spray prior to installation, you will initiate the patina process and minimize further rust run-off. 

Galvanizing is the best way to prevent rust.

Galvanizing prevents corrosion or rust by applying zinc to steel or iron.

During hot-dip galvanizing, iron or steel is immersed in molten zinc to form a protective coating.

Compared with hot-dip galvanizing, which can be done on-site, cold galvanizing compounds are zinc-rich corrosion-preventative coatings that can be painted on.

They are recognized by Underwriter’s Laboratories, Inc. as an equivalent to hot-dip galvanizing under the Component Program for their 95% metallic zinc content. As a result, you get the same level of protection that is provided by hot-dip galvanizing in the convenience of a can; shipped directly to you for application on-site. Cold galvanized products are subject to the same Federal Specifications as hot-dip galvanized products (DOD-P-21035A, formally MIL-P21035A).

Corten Steel Rusting Duration

While Corten steel is corrosion-resistant, it is not completely rust-proof. Environmental and climatic factors greatly influence how long Corten steel lasts and how quickly the protective layer of rust develops.

  • Generally, Corten steel will corrode or patina after 6 months of atmospheric exposure. Weathering steel types require cycles of wet and dry weather to develop and oxidize.
  • Rust provides corrosion resistance to Corten steel, which can last from a few decades to over 100 years.
  • Saltwater or a mixture of vinegar and peroxide combined with salt solutions can inhibit Corten from rusting faster

Designing for Rust

Cor-ten steel is becoming increasingly popular for outdoor sculptures and architectural facades. The material’s look is so attractive that entire buildings have been designed with it, and it has a legion of residential fans, including myself, throughout the world. At first glance, this material appears unfinished and rustic, and that is what makes it so appealing.

Despite its attractive appearance, weathering steel is not perfect for all applications. Before construction, carefully consider its use and placement. Using cor-ten incorrectly can be challenging and even harmful to surrounding areas. It is possible for rust bleeding or runoff from steel surfaces to stain nearby paint, stucco, stone, or concrete. Avoid using this material where staining is likely to occur. In humid climates, this material may also not form a protective patina properly, allowing the steel to continue to corrode. is a leading supplier, stockist, manufacturer & exporter of Corten Steel IRSM 41-97 Plate And Sheet. Get in touch with us for the best rates & availability.