What is Corten Steel?

The material behind the strength, character, and timeless finish of our fire pits

Built to Last. Designed to Evolve.

Corten steel is at the heart of every Kindle and Kin fire pit. Chosen for its strength, longevity, and natural beauty, it’s a material that transforms over time - developing a rich, earthy patina that tells a story with every use.

Below is how corten behaves in the real world—from the alloy itself, to the patina journey, to the 5mm steel we choose for Kindle and Kin fire pits.

Weathering steel, by design

Corten steel, also known as weathering steel, is a high-strength alloy designed to form a stable, rust-like surface when exposed to the elements.

Unlike ordinary steel, which continues to corrode, corten develops a protective outer layer. That patina acts as a barrier—slowing further corrosion and removing the need for paint or coatings.

The result is a material that is:

  • Structurally strong
  • Exceptionally durable
  • Visually distinctive
  • Virtually maintenance-free

New patina, mature patina

One of the most distinctive things about corten is how its finish evolves.

New patina reads brighter and more orange; mature patina deepens into rich brown tones with a more settled, matte texture. Both are normal stages of the same protective layer—not a flaw and not raw corrosion eating the steel.

When your fire pit arrives, weathering has already begun. With rain, air, and use, colour deepens, the surface becomes more uniform, and the steel settles into its signature look.

No two pieces are identical—each one becomes uniquely yours.

Why we use 5mm corten steel

We use 5mm thick corten steel on purpose—a spec that sets our fire pits apart.

This thickness delivers:

  • Superior heat resistance for repeated fires without warping
  • Real structural integrity—substantial, weighty, and resistant to flex
  • Long life in harsh outdoor conditions
  • A premium feel you can see at the edge and feel in the hand

It is not only about how it looks—it is about performance and durability over years of use.

Made for outdoors, made to last

Built for Australian conditions

Corten performs exceptionally well here. It suits outdoor exposure year-round, heat from frequent fires, and natural weather cycles—whether your place is landscaped, coastal, or rural.

Low maintenance, high impact

Unlike painted or coated materials, corten needs very little. Allow natural weathering, avoid sealing or painting the surface, and keep the bowl clear of debris when not in use. The material does the rest.

A material that tells a story

From the first burn to years of gatherings, your fire pit evolves with you. Changing tones, subtle markings, and a weathered finish add up to something grounded, authentic, and timeless.

FAQs

Our fire pits are built from thick steel and designed for years of use.

With normal backyard use and basic care, your fire pit should provide many seasons of warmth, cooking and outdoor gatherings.

Over time the steel may develop a natural patina from exposure to heat and weather — this is normal and part of the character of a real wood fire pit.

All of our Corten steel products are pre-treated prior to dispatch to begin the natural weathering process. This means your fire pit or firewood storage unit will arrive with a partially developed patina, rather than raw, unweathered steel.

Over the following weeks to months, as your products is exposed to the elements, the patina will continue to develop and deepen into a rich, consistent finish. This evolving surface not only enhances the visual appeal but also forms a protective layer that helps prevent ongoing corrosion.

Because this is a natural process, each fire pit or wood storage unit will develop its own unique look over time - no two are ever exactly the same.

In short: your Corten steel product arrives already on its way, but its final character is something that develops with you.

Our fire pits are designed in Australia and manufactured from high-quality steel by trusted fabrication partners. Each design is carefully developed to balance durability, performance and timeless outdoor style.

Before reaching our customers, every fire pit is inspected to ensure it meets our standards for strength, finish and build quality.

A quality fire pit should be made from thick steel that can withstand repeated heating and cooling cycles.

Thin steel fire pits can warp or deteriorate quickly. Higher-quality fire pits are typically made from 5mm to 6mm steel, which provides excellent durability and longevity.

Thicker steel also helps retain heat and creates a more substantial, stable fire pit.

One of the advantages of corten steel is that it requires very little maintenance.

The steel naturally forms a protective rust-like patina that helps shield the material from further corrosion.

Aside from occasionally removing ash and keeping the fire pit clean, very little maintenance is required.

Yes. Corten steel is specifically designed to perform well outdoors.

Once the protective patina forms, it helps protect the steel from deeper corrosion. This makes corten steel a popular choice for:

• outdoor sculptures
• landscaping features
• architectural elements
• fire pits

With normal use, a corten steel fire pit can last for many years outdoors.

The patina usually begins developing within a few weeks of outdoor exposure.

Depending on the climate and weather conditions, the full protective patina typically develops over several months.

During this time the colour gradually changes from a darker steel tone to the warm, earthy rust finish that corten steel is known for.

At Kindle and Kin we kick-start the process by applying a special treatment prior to shipping. This means your fire pit or wood storage unit will be developing its patina and looking great when you receive it.

Yes — but in a controlled and beneficial way.

Corten steel is designed to form a stable rust-like patina on its surface. This layer actually helps protect the steel underneath from deeper corrosion.

This natural weathering process is what gives corten steel its distinctive warm appearance.

Corten steel is a special type of weathering steel designed to develop a protective surface patina when exposed to the elements.

It is commonly used in architecture, landscaping and outdoor design because it:

• is extremely durable
• requires minimal maintenance
• develops a beautiful natural finish

For fire pits, corten steel offers the perfect balance of strength, longevity and outdoor character.

Maintaining a fire pit is simple.

Basic care includes:

• removing ash after fires
• keeping the fire pit clean and dry when possible
• using a cover when not in use

These simple steps will help keep your fire pit in great condition for years.