Right, and why doesn't this happen with zinc plating, galvanizing?

Second, the zinc plating would be long gone.

Corrosion-resistant zinc plating of iron (hot-dip galvanizing) is the major application for zinc.

Zinc plating was developed and continues to evolve, to meet the most challenging corrosion protection, temperature and wear resistance requirements.

Zinc plating (see galvanization)

Zinc plating (Trivalent and Hexavalent)

Zinc plating or any other standard finish opertion of 14 to 20 microns can be done which helps to avoid any sort of corrosion.

Zinc is popular in manufacturing and building; its ability to create corrosion-resistant zinc plating of steel (hot-dip galvanizing) is the major application for zinc.

There was also a diverse portfolio of grittier businesses, including zinc plating, plastics and rubber products, that grew out of its glass and metal container businesses.

In the hall, walls were constructed of heavy-gauge steel with galvanized zinc plating; an acidic mixture of water and lemon juice was used to give them luster.

This zinc plating really is that familiar, cheap silvery gray stuff air ducts are made of, a reminder that modern architecture is a form of industrial alchemy.

ASTM B633 Type II and III specify zinc plating plus chromate conversion on iron and steel parts.

It is used as in electrolytes for zinc plating, as a mordant in dyeing, as a preservative for skins and leather and in medicine as an astringent and emetic.

The Northern Frontier Visitors' Centre is also located near the Heritage Centre, and is an historic building constructed at the same time as the legislative assembly, and sided in the same distinctive grey zinc plating.

Often a surface coating is used to protect the fastening from corrosion (e.g. Bright Zinc Plating for steel screws), to impart a decorative finish (e.g. jappaning) or otherwise alter the properties of the base material.

As a result of the silver color of the zinc plating, the Gleaner brand ended up having a distinctive color (just as Allis had Persian Orange, IH had red, and John Deere had green), despite the sheet metal not even having any paint.