Our columns and brackets are produced from Grade 304L & 316L austenitic stainless steel. These types of steel conform with following standards:
EN10088-2: Stainless Steel.
1.4301 - XBS1449: Grade 304L.
1.4401 - XBS1449: Grade 316L.
Corrosion Resistance:The corrosion resistance of stainless steel is attributed to the thin passive film that forms spontaneously on its surface in oxidizing environments if the steel has a minimum chromium content of approximately 10.5%.(Which both Gr304L and 316L do).
As the film adheres strongly to the metal substrate and protects it from contact with the surrounding environment, the electrochemical reactions that cause corrosion are effectively stopped. If locally destroyed, for example by scratching, the film can ‘heal’ by spontaneously re-passivating in an oxidizing environment.
Finishing: Due to largely being used as roadside structures, we opt for a process of stainless steel bead abrading to create a homogenous automated satin finish which can be sealed with a clear coating upon request. Although not advised for roadside due to glare issues, both mirror finishing and electroplating are available for decorative stainless structures.