What your stair can be
What your stair can be
For sea areas, with high exposure to saline environment, it is mandarory to use materials such as aluminum and stainless steel or iron with adequate protections. Even if you use aluminum, becasue is difficult to braze, it must be combined with some inserts of concrete. That means that the stainless steel, at least from the standpoint of the homogeneity of the material, is the most suitable option.
The recommendation is to use materials suitables for brazing the stainless steel, so as not to generate points of oxide. In conclusion it is recommended to entrust the job to a specialized workshop in brazing stainless steel.
There are two grades of stainless, one called AISI 304, this is standard and widely used in the construction, on the other hand we have the AISI 316 wich is used in industry for highly corrosive environments or for contact with food products.
Another option is to make the structures of iron and protect it with a cape of zinc made by hot inmersion (commonly known as hot galvanized). The hot galvanized film provides a greater thickness than the cold galvanized. The bath of hot zinc provides very good protection against metal corrosion, but we must know that it provides a rough surface termination.
On the other hand we must take special care to manufacture the custom made elements and the assembly elements. Under no circumstances these can be later cut, brazed or adapted after having the cape of Zink. We must bear in mind that the lifespan of the whole work is equal to the lifespan of it's weakest point, like a chain, a chain is as strong as it's weakest link, the same is true for this.
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