How do you make Corten rust faster?

A periodic mist of water will speed up the oxidation process, especially if you live in a dry climate. Vinegar can be sprayed onto the planter to give it the rusty look in minutes. As Corten Steel Planters are designed to rust, they will begin to show signs of rusting if left outside for a few weeks and Mother Nature has her way.

Speaking of Corten Steel, specialized Corten Steel is used for proper functioning. Is one leading Manufacturer, Supplier & Stockist Of S355J2WP+N Corten Steel Plate & Sheet

When you first receive the planter, wash it with warm water and soap if you do not want to wait a few weeks.  Oil will be removed and the water will react with the metal, causing oxidation (rusting).  If you live in a dry climate, a periodic mist of water will help accelerate the oxidation process.

The weathering steel Corten starts out as a typical steely grey color and develops a warm, rust-colored patina over time. Unlike rust, however, this patina is non-corrosive and doesn’t affect the steel’s integrity. Vinegar can be sprayed directly onto the planter to give it the rusty look in minutes.  It washes off with rain, so the next time it rains, your rust will be gone.  It will take only a few months, with or without vinegar, for the planter to gain a natural layer of rust and seal.

What is corten rust steel?

Corten steel (Cor-Ten) is a weather-resistant steel that is an alloy of copper and chromium, which is more corrosion-resistant than unalloyed steel.

As for corten steels, the rusting process occurs in the same way but results in a more stable rust layer known as a patina, which adheres to the base metal and is less porous. As the patina is exposed to the weather, it continuously regenerates and creates a protective barrier that blocks oxygen, moisture, and pollutants from entering the structure. 

Although this results in a much lower corrosion rate compared to other steels, it does NOT make corten steel corrosion-resistant. Corten steel is left to rust in order to form a protective patina coating. 

Due to its natural appearance and original appearance, corten steel is widely used in decoration. However, corten steel cannot be delivered rusted for practical reasons. We explain how to speed up its corrosion using a simple method.

The special qualities of naturally rusted corten steel were discussed in my previous post. Corten steel is extremely aesthetic and is often used for exterior design. For decorating your outdoor space, you can find a variety of corten steel objects that have already developed a patina in DIY and gardening stores. Corten steel, however, does not yet have a patina, so it takes months for rust to appear and stabilize on it before it reaches its ultimate appearance.

It is corrosion-resistant and strong, just like weathering steel. Corten steel is the perfect material for outdoor architecture and landscaping. Corten steel exhibits a patina (rust) that protects against corrosion and atmospheric elements. Corten steel is often used for its aesthetics. The appeal of corten steel lies in its ability to be used in a variety of applications without the need for initial painting and upkeep.

Depending on the weather conditions and the size of the panel, corten steel can take several months to stabilize. In order to achieve a nice orange color across its entire surface, the metal must be subjected to alternate wet and dry periods until the patina forms consistently. However, if the weather is erratic, it may seem like it takes a long time.

If you spray saltwater regularly across the panel and let it dry, you’ll see rust in no time.

Corten steel is corrosion-resistant, but it does not completely resist rust. Environmental and climatic factors determine how long the steel will last and how quickly rust will develop.

  • Weathering steel types require cycles of wet and dry weather to develop. Corten steel will corrode after six months of exposure to the atmosphere.
  • As a result of rust, corten steel can last from a few decades to over 100 years.
  • Saltwater or vinegar and peroxide combined with salt solutions can prevent corten from rusting.

In addition to iron and carbon, Cor-Ten steel contains copper, chromium, nickel, phosphorus, silicon, and manganese in small quantities and less than 5% of the total metallurgical composition. Cor-Ten’s strength and corrosion resistance make it such a popular choice. This is all possible because of the steel’s structural composition and the particular distribution and concentration of alloy elements. As a result, they reduce the carbon content, increase load capacity, and above all, provide exceptional corrosion resistance.

In spite of Corten steel’s impressive corrosion resistance, it also has some disadvantages that should be considered before using it

Disadvantages Of CorTen Rust Faster  

Environmental Limiting Factors

Due to the corrosion effects of steel, areas affected by sea air, heavy rains, humidity, or persistent fog are not ideal places to use Cor-Ten sheet facades.

It is true that surface coatings are formed more quickly and are darker in color in industrial environments than they are in rural settings. Sodium chloride exposure in seaside resorts may slow down the formation of protective coatings. Both cases, however, may result in the coating not adhering perfectly to the metal substrate, resulting in a lack of corrosion protection properties typical of Cor-Ten steel due to the conditions just described.

Uneven Colour Variation

The color of Cor-Ten does not change homogeneously with time, so there is no guarantee of this. This could pose a problem, since, in the event that a facade panel needs to be replaced, it would be rather difficult to trace its matching Cor-Ten color.

Necessity For Constantly Clean Surfaces

The material must always be kept clean, away from mud, grease, oil, paint, cement, mortar, and other substances, in order to minimize contact with agents that might alter the natural oxidation process.

Poor Compatibility With Other Metals

As cladding on facades, Cor-Ten steel is usually installed on substructures, or in any case through metal tracks. It can be risky to join metals with different electrolytic potentials: galvanic corrosion can occur when two metals come into contact with water with different electrolytic potentials.

If weatherproof fasteners cannot be used, nylon spacers should be inserted between the metal types to prevent direct contact between them.

Water And Environmental Control

It should also be noted that, in order to safeguard the finish of the material, the correct design and adequate management of the outflow of rainwater are important. It is important to design all joints and profiles so that rainwater can flow freely without stagnating. Keeping the material well-drained and even out of contact with wet leaves is essential. When atmospheric agents produce oxidation, rust-dirty water can drip onto adjacent surfaces and stain them permanently, or worse, pollute the local aquatic environment. is a leading supplier, stockist, manufacturer & exporter of Corten Steel. Get in touch with us for the best rates & availability Of S355J2WP+N Corten Steel Plate & Sheet