Basic Metal Characteristics

• Brass/Bronze
  Considered to be "enduring metals" since they are highly resistant to corrosion. Differences in color may result from the proportions of the metal (copper, lead, and zinc — with bronze containing some tin).
  
  
• Iron/Steel
  As surface hardware, it is not as desirable since if exposed to dampness, products will easily rust. Steel tends to be somewhat stronger than iron due to the combination of various metal composition (iron, carbon, manganese, phosphorus, and sulfur).
  
  
• Stainless Steel
  A hard rust-resisting metal used extensively for architectural door trim (pulls, pull plates, kick plates). Stainless steel not only contains iron, but chrome and nickel as well.
  
  
• Aluminum/Zinc
  Easily cast, forged, or stamped. Finished, aluminum and zinc provide a cost-effective alternative to brass.