Archive for December 9th, 2008

metal finishes

December 9, 2008 - Mountainman

Metal that has been forged requires a protective finish to prevent corrosion.  Forged iron is susceptible to corrosion caused by a chemical reaction between the iron and oxygen.  Because water (H2O) contains Oxygen it speeds up this process. Therefore, it is necessary to protect the surface of the metal from water to slow this process.

Metal corrosion

There are a number of finishes that can be used to protect the surface of the metal.  Paints, varnishes, heat treating, and waxes are common finishes however to ensure that the surface of the material is protected it is common to also apply a clear acrylic coat on top of the finish.  This is especially necessary when the metal surface is exposed to the elements such as an exterior door handle, or hand rail.