Materials & Finishes


100% Recyclable Ductile Iron


Spheroidal Graphite Ductile Iron (Cast Steel) differs from grey iron in that carbon is present in different percentage proportions, in the form of spherical nodules rather than flat flakes. These nodules do not encourage crack propagation. S.G. Iron is ductile; deforming before it fails making it tough; able to absorb significant impact energy. The manufacturing process for S.G. Iron is complex and the casting process more difficult than grey cast iron. Consequently S.G. items are more expensive. S.G. cast iron should be used for structural items or where impact is likely.

Our ductile iron components are manufactured from recycled metal and at the end of their life, are 100% recyclable again.


100% Recyclable Cast Iron


Grey Cast Iron is the most common general purpose cast iron. Manufacture is straightforward and it can easily be cast into intricate shapes. The graphite is present in large flat flakes within the crystal structure of the iron. These flakes behave like microscopic fault lines allowing cracks to propagate through an item when it is over-loaded. Because of this, grey iron is brittle and will not absorb a great deal of impact energy before failure. Grey iron will be the most economic choice for items that do not need to provide any structural or protective function.

Our cast iron components are manufactured from recycled metal and at the end of their life, are 100% recyclable again.


The hardwood we use is Mahogany timber from FSC sustainable managed forests.

The timber is then treated with a Sikkens brand of translucent stain which is available in 2 colours: Light Oak and Dark Teak, which combine aesthetic appearance with optimum durability to meet the challenging needs of Irish and UK weather conditions. This not only protects the hardwood but also gives a high quality finish.


Hartecast are pleased to announce that we can now offer Recycled Composite Wood as an alternative to Hardwood Timber on most of our seats and benches.

The composite is not hollow it is a solid section all the way through, 50 % hardwood, 45 % Recycled plastic and 5% bonding approx.

The product maintains a natural wood property whilst also being environmentally friendly, making it a viable and economic alternative to timber. Durable and easy to maintain, recycled composite is weather resistant, and impervious to rot and wood eating organisms.

Benefits of Composite Wood

  • Does not split, splinter or rot.
  • Installs and is worked like timber.
  • Can be jet washed as required.
  • Is colour stable.
  • Retains its natural timber appearance.
  • Maintenance free.
  • Needs no staining, oiling or painting.
  • Does not absorb moisture.
  • Can be sanded


Stainless steel is generally tougher and more vandal resistant than steel and has an exceptionally high corrosion resistance. This is due to the presence of a chromium-rich oxide film on the surface. This film will self-repair if damaged.

Hartecast always use 316 Grade stainless steel which has a higher content of chromium in its composition, providing greater resistance to corrosion and ideal for items that may be exposed to salt-spray.


Hartecast offer 3 finishes for stainless steel

  1. Electro-polish – A shiny mirror finish.
  2. Bead Blast – A matt finish.
  3. Brushed Finish – Cross between matt and mirror finish.


Powder coating is an efficient method to apply a hard wearing, weatherproof surface finish to our cast iron and ductile iron products. The process works by applying a free flowing polyester powder, using an electrostatic gun. The items then pass through an oven to bake the powder to form a hard surface. Most RAL & BS colours are available. Polyester Powder Coat has the following benefits:

  • Gives additional corrosion protection to the galvanized castings.
  • Excellent colour stability.
  • High durability and resistance to weathering.