Passivating, a substance used during the passivation process to protect it from corrosion

For passivation treatments in stainless steel, aluminium, carbon steel, copper, nickel, zirconium and titanium, Bama uses a substance called passivating, which differs according to the material being treated.

Passivation is a process by which a protective antioxidant film is placed on a material to protect it from the risks of corrosion. This can be done manually or by immersion.

In both cases, the substance used is the passivating agent, one of the metal chemicals. The passivating agent is actually any solution used during the passivation process.

Secure and certified solutions

One type of passivating agent used by Bama is the Picke-Inox St., designed specifically for stainless steel. The Picke-Inox St. is a pickling and passivating agent for stainless steel surfaces, which allows you to achieve a deep cleaning by removing all types of residual oxide and creating a surface layer to protect the metal. The product meets the standards imposed by ASTM A-380.

The Inox Pass N. is also a passivated product mainly made of stainless steel, generally used after pickling treatment. Inox Pass N. respects the standards of ASTM A-967.


The passivating function

Bama not only uses the best materials available on the market, but also constantly works to find new ones thanks to its in-house research laboratory. In fact, different types of passivating agents have been developed to meet specific needs.

These include Bama Gelsteel Strong, a high viscosity product specifically designed for austenitic (300 series), martensitic (400 series) and austenoferritic (duplex and superduplex alloys) steel.

For carbon steel, on the other hand, the passivating agent Bama Fosfiron is particularly effective in creating the protective anticorrosive layer. Also for carbon steel, Bama Carbopass meets the need for corrosion resistance by creating the antioxidant film.

Finally, for titanium, Bama Geltitan Strong has - in addition to its specific pickling action - also a passivation component of the material.