In Ferrous Elite, we have put together a portfolio of some of the most popular classic designs for street furniture and elegant contemporary pieces as well as an exclusive collection of bollards designed by acclaimed British artist Sir Antony Gormley.
Cast iron is the traditional choice for long lasting street furniture in the UK and is widely respected for its sustainability credential; making Ferrous Elite the perfect choice for landscape transformations in heritage, conservation and urban areas.
The Ferrous Elite range includes:
•Antony Gormley Bollards
•Cast Iron Bollards
•Cast Iron & Timber Benches
•Cast Iron Litter Bins
•Cast Iron Air Bricks
•Cast Iron Tree Protection
•Cast Iron Grates and Frames
Logos, lettering and embellishments can be hand painted gold or any specific colour upon request although additional charge will apply.
Metal Grade BS EN 1563 Grade 500/7
Metal density 7874Kg/M3 (7.874mg/mm3)
Corrosion Rate external * 0.0002327mg/mm2/year.
Based on the density of Ductile iron (SG Iron) and the external corrosion rate then to corrode 1mm depth of Ductile iron would take 7.874/0.0002327 years.
This gives a disproportionate number of years and since our bollards have a thickness of 9mm or greater then pure external corrosion alone* would take several millennia before they needed replacement.
Other factors such as physical abrasion and chemical attack is likely to have some impact on the bollards useful life, but even considering these we are still expecting hundreds of years.
The painting and regular recoating of bollards to ensure the cosmetic aspects are maintained will further extend the lifetime of the bollards.
The particular grade of bollard would be expected to withstand a car impact without any major structural damage.
In the majority of cases, the actual securing media is likely to fail and require replacing long before the bollard becomes structurally ineffective.
The graphite in the material is highly resistant to corrosion and this is one feature why the corrosion rate is so low. The metal corrodes around these microscopic graphite nodules and leaves the graphite standing proud on the surface, which minimises the on-going corrosion rate. This is why on well used cast iron the surface they becomes highly polished after rubbing contact with clothing leaving a bright and rust free surface.
* International Journal of Science and Technology ref. IS SN 2224-3577