What types of metal can be powder coated?

What types of metal can be powder coated?
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  To put it most simply, any metal that can hold an electrical charge and tolerate high temperatures for curing can be powder coated.  The most common of these are aluminum, steel, titanium, bronze, and brass.  Each of these metals have limitations or qualities that require different approaches in order to powder coat them appropriately.

  Steel is produced in a couple of different ways, either hot rolled or cold rolled.  Producing steel via the hot rolled method involves creating sheets of metal through a procedure of rolling the material at extremely high temperatures.  This process produces an oxide surface coat on the metal that must be removed prior to powder coating.  Examples of steel that are produced in this fashion are truck frames, pipes and tubes, automotive wheels and rims, doors, and shelving to name a few.  Steel produced though the cold rolled method is normally performed at or about room temperature.  Typically, strips, bars, rods, and sheets are cold rolled.  Cold rolling increases the strength of the material and does not cause a surface scale to be present.  It is more expensive than its hot rolled counterpart.  Common uses for cold rolled steel are home appliances, desks and furniture, shelving, light fixtures, water heaters and frying pans.
  Stainless steel contains a compound called Chromium, among several other elements.  The chromium content in stainless steel is what provides this metal with its protective qualities from rusting.  A chemical reaction inherent in the material occurs that provides a coating that protects it from corrosion, making it ideal for situations where moisture exposure is imminent.  It also gives the material the capability to “heal” itself when oxygen is present.
  Brass and copper can also be powder coated yet require thorough cleaning prior to the process as well.

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