Choose the Right Type of Metal

DAV NORDIC is certified for steel production, ensuring that our steel products comply with applicable regulations and standards.

Disclaimer: The following text, including any references to products and case studies, is based solely on Danish laws, regulations, and standards. Interpretations and applications may differ in other countries.

At DAV NORDIC, We Primarily Work with Three Types of Metal: Steel, Aluminium, and Corten Steel

Learn more below about the properties of each material.

Steel

Steel is an alloy in which iron is combined with carbon, with the carbon content typically ranging from 0.2% to 2.1%. Steel offers a vast array of applications, which is why it is one of the most widely used materials in our product portfolio.

DAV NORDIC is certified for steel production, ensuring that our steel products comply with applicable regulations and standards.

We primarily use three grades of steel: S235, S275, and S355. These classifications refer to the strength of the steel – S235 being the most ductile and S355 the least.

All our steel products are hot-dip galvanized. This means they are coated with molten zinc, which forms a protective layer against corrosion. The thickness of the galvanization can vary – for example, our conical steel poles are galvanized to a minimum of 60 µm. This zinc coating significantly extends the durability of the steel by protecting it against rust.

The relationship between environmental exposure and material durability is categorized by corrosivity classes.

Read more about corrosion classes here.

Steel is used across all our product segments. For example:

• In road safety, we offer a wide range of steel guardrails.
• Many of our poles are manufactured in steel.
• Within noise-reducing solutions, steel is used for base skirts – the transition between the foundation and the noise screen itself.
• And in our Steel for Infrastructure category, it goes without saying that steel is the primary material used.

Aluminium

Aluminium is a chemical element with atomic number 13 in the periodic table. It is a very lightweight metal, which contributes to its popularity and wide range of applications.

Another reason aluminium is widely used is its naturally protective surface – a thin layer of aluminium oxide that protects against corrosion. This means aluminium does not need galvanizing. Due to the high energy requirements in its production, aluminium is also one of the most heavily recycled metals worldwide.

DAV NORDIC is certified to manufacture aluminium poles. The material’s inherent properties are actively utilized in our products – aluminium is flexible and energy-absorbing, making it ideal for enhancing road safety.

In our Road Safety division, aluminium is used for the production of amphibian fencing, often implemented along new road constructions. In noise-reducing solutions, aluminium is also used for noise screen cassettes and other components.

Corten Steel

Corten steel is a special type of steel designed to develop a rust-like surface quickly. This weathered appearance occurs due to a unique alloy composition found in Corten steel. The material was introduced in 1964, originally used in coal wagons where it offered a more maintenance-friendly alternative to painting.

Corten steel has a longer lifespan than ordinary steel, as the outer rust layer acts as a protective barrier against further corrosion. The corrosion process is designed to accelerate initially, and then slow down significantly, resulting in a corrosion rate 4–8 times lower than that of mild steel.

We offer a wide selection of products in Corten steel, as most of our steel-based products can be custom-manufactured in this material.

See our sound-absorbing solution along the Silkeborg Motorway here.

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