COR-TEN Steel Planters
Frequently Asked Questions
What does patina mean in reference to COR-TEN weathering steel?
Any mention of patina is usually in reference to our products made of COR-TEN weathering steel. Patina is an important process for COR-TEN. COR-TEN is named for two of its properties corrosion resistance (COR) and tensile strength (TEN).
For COR-TEN to become fully corrosion-resistant, it needs to go through a patina process. During this process, the steel changes from a raw metal look (in which the color of the steel is gray) to patina (where the metal turns the color of orange-brown).
To patina, the planter needs to be in the elements. This means that COR-TEN weathering steel should only be outdoors, and the planter should not be covered. It is important to note that when the planter is going through the patina process, the metal can bleed onto the surrounding surface.
COR-TEN Weathering Steel After Patina
Once this change has occurred, the weathering process of COR-TEN is complete. The steel is now resistant to corrosion and is perfect for many outdoor climates. (Note: COR-TEN weathering steel planters need to be at least two kilometers away from large bodies of saltwater, as saltwater can erode this material. I.e., you wouldn’t want to use COR-TEN in a cafe located next to a saltwater beach).
If you love the look of COR-TEN weathering steel but do not think the material will work for your needs, we recommend using powder-coated aluminum planters in weathered rust. Aluminum planters are a commercial alternative that mimics the look of COR-TEN weathering steel.
PureModern COR-TEN Weathered Rusted Steel Planters Are Naturally Water-Resistant and Frost-Resistant
COR-TEN, or Corten, is a naturally oxidized steel alloy that is highly sought after for outdoor projects due to its unique look and weather resistance. COR-TEN is designed to resist corrosion with a protective patina that forms on the surface. This stable rust-like appearance makes them a stylish option for enduring moisture and the elements without losing their strength.
When you first receive your COR-TEN planter, it’ll have the look of raw metal and will begin to patina into bronze once placed outside. By request, we can speed up the patina process by pre-treating your planter before shipment, but it will need to go outside once you receive it to complete the oxidation process.
Before purchasing planters made from COR-TEN weathering steel, be aware that they will most likely bleed onto the supporting surface after heavy rain or watering. The structure still must be designed so that rainwater does not drain from the metal onto surfaces where staining would be visible.
Buy COR-TEN Steel Planters
There is no one-size-fits-all formula for creating the perfect outdoor space. We can custom manufacture any type of planter you are interested in and color-coordinate them to match your decor. With our completely customizable planters, we’ll craft a solution that’s tailored to your needs. Click here to learn more about ordering custom planters in the size and color you need.