Zahner patina engineers inspect each and every plate surface. Each surface of the bare Solanum Steel is cleaned and prepared to eliminate oxides and contaminants. If this step is not carefully followed the finish will not hold up. Once properly prepared, Zahner force the surface to an initial ferric oxide. This finish is slightly orange in color and is characterized by a crusty texture.
An orange patina is not as permanent as a dark patina. A patinated steel showing yellow and light orange colors will rub off and continue to bleed and stain adjoining surfaces, unless sealed with a durable coating. Zahner allows the orange-toned oxide to grow to a point, and then remove most of it from the surface. The surface is then exposed to a proprietary bath with specific atmospheric conditions to develop a hydrated oxide form of either ferrous oxide or ferrous hydroxide.
At this stage, the steel surface becomes insoluble.
The hydrated oxide form until it reaches a certain point. The material is then arrested with a final bath that inhibits and slows oxidation to a standstill. The material is in its final stage of development.
Sealing Solanum Steel
In some circumstances, the Solanum Steel material can be sealed. This is often desired for trafficked environments where people will touch the surface. For interior applications of Solanum Steel, the material can be sealed with a clear coating to provide a softer touch.
However, for exterior applications, it is recommended to leave the material unsealed. Sealing is not recommended for outdoor applications because the coating will require further maintenance over time, and may change appearance as the sealant interacts with the changing environmental conditions.