What is the difference between blue steel and galvanized steel?
faithful to its name, blue steel is a bluish color and easily distinguishable from the matt gray appearance of galvanized steel. Although this may only seem an external difference, it is a color change that reflects two different procedures that have gone through the original steel to obtain corrosion protection. While the appearance of the blue steel is attributed to the coating of black iron oxide, the galvanized steel owes its clear gray zinc carbonate, which is the result of the chemical reaction between zinc, oxygen and carbon dioxide. However, the intention of creating both varieties is to wage a successful war against the rust, the most destructive corrosive agent.
Bluing Steel is achieved by a passivation process that neutralizes the non -impact film of oxide on its surface. By comparison, galvanizing steel consists of immersion of steel in molten zinc and immediately exposes it to the atmosphere to facilitate the protective coating. As finished products, blue steel bluish shade and galvanized steel can easily be seen with kind permission of its fragmentedIt appearance, which is caused by crystallized patterns on the surface. Blue steel can also be created using various processes such as hot blueing, cold bluing, rusty bluing and smoke blueing, but galvanization was a standard procedure, the only innovation is electrogalization, which includes zinc electrification to create a protective coating.
traditionally, blue steel was associated with the arms industry; For example, firearms made of this material are more resistant to rust and tend to last much longer. The brilliant engineers of this era have also found various other applications for this type of steel, and now its use is extended in the establishment of massive steel structures for numerous industries. On the other hand, the galvanized steel of the spine of the steel industry was boasting the use of commercial, structural and cartoon applications, thanks to its easy kuma and ductility. Only in recent yearsThe blue steel was replaced by galvanized steel in structural engineering.
Another remarkable point of blue steel is that the Bluing process is only effective in the case of steel and stainless steel. Galvanization includes both iron and aluminum, which are often more accessible. The process of applying for non -ferrous materials, such as aluminum and polymer, has proven to be completely ineffective, because protection provided after the bluing process is virtually non -existent.