Steel parallel flange channels (PFCs) are frequently and commonly used in construction projects of all sizes to provide strength and structural support. Their distinctive shape with two parallel flanges on the sides of a central web make them an iconic and easily recognisable component in structural engineering. This design also makes them uniquely suited to handling high vertical and horizontal loads, enabling them to be used in structural and load bearing applications. In this post, we take a closer look at how well they hold up against corrosion and environmental factors.
Common Corrosion and Environmental Stressors
There are many different stressors that can lead to corrosion and environmental damage on steel PFCs. These include:
Moisture
Moisture is one of the most common causes of corrosion on steel and it can be especially potent in humid or coastal regions that have high levels of humidity in the air. Prolonged exposure of untreated steel to moisture can lead to the formation of rust, which can eventually weaken the steel. If you want your steel PFCs to withstand such environmental damage, consider protecting them with a layer of paint or opting for galvanised steel.
Salt Air and Chlorides
Structures near the ocean or in areas where de-icing salts may also become exposed to salt and chlorides in the air. These can induce accelerated corrosion when they penetrate the steel’s surface, causing the passive layer to break down and rust to form more easily. Over time, this can lead to material degradation and can compromise the structural integrity of steel PFCs if they are not properly protected.
Chemical Exposure
In an industrial environmental, steel PFCs may also be exposed to airborne chemicals or come into contact with acidic substances. These can lead to corrosion on the surface of the steel, particularly if the protective coatings are damaged or insufficient. This can result in surface degradation over time and even pitting in more serious circumstances.
Temperature Fluctuations
If you live in an area with significant temperature fluctuations throughout the year, it is important to note that repeated cycles of heating and cooling can also lead to repeated expansion and contraction of the steel. This can lead to micro-cracks in the steel as well as deterioration over time which can cause the steel to weaken and lose its strength.
The Importance of Using High Quality PFCs
Using high quality PFCs can also improve the overall performance of your structure and reduce the likelihood of it being affected by corrosion and other environmental stressors. RW Steel is the number one supplier of premium retaining wall steel and steel products in Melbourne. Our extensive catalogue includes PFCs in various sizes, including 100PFC, 150PFC and 200PFC22.9, all of which we can cut to your preferred length at no extra cost. Get a free quote from our website today or contact us to find out more about how we can help with your steel needs.
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