Skip to content
My COR-TEN Steel product looks different from the picture?

My COR-TEN Steel product looks different from the picture?

Received a GrillSymbol Cor-Ten item that doesn't match the picture? Don't fret! We're here to guide you on achieving the desired weathered look.

Understanding Weathering Steel:
Cor-Ten and S355JOWP are robust, weather-resistant steels. Their unique chemical makeup allows a protective patina to form, enhancing durability without compromising strength. This patina not only defends against the elements but also offers a striking, natural finish. These steels are eco-friendlier and ideal for year-round outdoor use.

 

Initial Appearance and Transformation:
Initially, Cor-Ten and S355JOWP resemble ordinary gray steel. However, exposure to the elements transforms them to a deep, reddish-brown, enhancing their protective patina. This natural barrier is akin to rust but is beneficial, thickening when wet and safeguarding against further corrosion.

Unpacking and Preparing Your Product:
Upon arrival, promptly unpack to prevent moisture buildup and uneven rusting. The products are pre-treated for rust formation.

Patina Development - Two Approaches:

  • Natural Process: Leave your product outdoors. Rain and moisture will naturally initiate patination. The initial change appears in 1-3 weeks, with full development in 3-5 months. Accelerate this by periodically wetting the surface.
  • Accelerated Method: (Note: Proceed at your own risk) Apply a diluted salt solution (1 teaspoon per liter of warm water) 5-6 times. After each application, the product should be exposed to natural elements for rinsing.

Staining and Care:
In the first year, rust may transfer to nearby surfaces. To prevent this, elevate the product using bolt heads, creating an air gap and preserving both the product and the surface beneath. For indoor use or to slow rusting, consider Owatrol 732SK rust oil.

Remember, the natural and unique finish of weathering steel means each piece will evolve distinctly. While we guide you through the process, the material's inherent characteristics, like potential rust stains, are part of its charm and are not covered by the manufacturer. Enjoy the journey as your GrillSymbol Cor-Ten product takes on its unique, weathered persona!

Previous article What is Corten Steel?
Next article Safety, Care, and Enjoyment Tips for Your Fire Pit