With corten steel, the rusting process starts in the same way, but the specific alloy elements in the steel produce a stable rust layer, which adheres to the base metal and has fewer pores. This rusty "copper rust" forms under alternate wetting and drying conditions, creating a protective barrier that prevents further entry of oxygen, water and pollutants. The result is that the corrosion rate is much lower than that of other structural steels. The mechanical properties and weathering rate depend on the alloys found in the steel, the concentration of these alloys and the thickness of the steel substrate.
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|Corten Steel is a special steel originally developed for bridge building and skyscraper construction due to its incredible strength. It develops a protective rust appearance on exposure to the weather, creating warm rich textures not always associated with metal.If this protective barrier is compromised, it will simply form a new skin to protect itself. Corten Steel is extremely durable and has a far higher resistance to atmospheric corrosion than other steels, making it is ideal for use in fire-pits, planters and water features.This can take some time; Corten Steel has a reactive patina period of between 3 and 9 months depending on location and climate.|
Corten Steel Fire Pit is not just a practical fire pit, it is a piece of art in its own right. It has an iron oxide patina or high temperature paint on the outside. The iron oxide patina will darken a little with time then become permanent. The inside is coated with a high temperature resistant paint and has a rain drain in the bottom. The base of the fire pit has an inside weld to give this fire pit a smooth and clean look on the outside while maintaining the integrity of the piece. Each piece has a brass plate with its unique number. No two pieces carry the same number. This assures your fire pit's individuality.
Corten steels differ from other corrosion resistant steels, such as austenitic stainless steel, in resisting the formation of rust. Corten steel will rust, but the outer surface will only rust. Once the outer layer of rust is formed, the rust will not penetrate into the corten steel. The anti-rust layer on the surface acts as a barrier to prevent further corrosion of steel. In ordinary carbon steel, the rust layer formed is porous and will fall off, which allows another layer to form deeper in the steel.
Corten steel is a series of low carbon alloy steel, which is composed of many brands. Certain grades are proprietary, such as COR-TEN A or COR-TEN B.Patinax weathering steels, which are another group of proprietary grades.