Frequently asked questions

For the production of new stainless steel, up to 80% scrap is used. Stainless steel is 100% recyclable. Because stainless steel is not painted, it should not be removed at recycling, as opposed to painted, galvanized or plated steel. The durability of stainless steel is much longer than other metals, because of the high corrosion resistance. These characteristics taken into account, stainless steel is one of the most environmentally friendly construction materials.

The building industry is using mostly stainless steel 304 or 316 (AISI 304/316). Stainless steel 304 contains 18% chromium and 8% nickel. Stainless steel 316 contains 16% chromium, 10% nickel and 2% molybdenum. Stainless steel 316 is more expensive and more resistant to salt corrosion and is used mainly in the chemical industry.

Contrary to what its name suggests, stainless steel can rust.

When conditions are tough enough (chlorine, salts, chemicals …), corrosion can occur. This usually occurs at damage to the oxidation layer or by implantation of other metals in the surface or where dirt is concentrated in cracks and crevices. Also condensation (acid rain) may provide long-term rust. Therefore it is advisable to regularly clean exterior railings with a damp wash cloth.

Stainless steel is an analloy comprising iron, chromium, nickel and carbon. Stainless steel contains at least10.5% chromium and a maximum of 1.2% carbon.
The chromium provides an invisible layer of chromium oxide and protects the underlying metal from oxidation (rust). Repairs for damage to the layer itself.

A common mistake is the use of untreated stainless steel on the coast. Even stainless steel 316 is not a good solution for that. Up to +/- 20 km from the coast we advise to use electrochemical polished stainless steel. For all other applications (except in corrosive environments) is 304 or 316 stainless steel, sanded with a finegrain, enough.