Porcelain
enamel is a specially formulated, highly durable glass permanently fused to
metal under extremely high temperatures. The metal may be steel, cast iron,
or aluminum. It may be a protective surface for cooking utensils, kitchen
and bathroom fixtures, and appliances such as dishwashers, ranges,
refrigerators, washers and dryers. It is acid resistant. Porcelain enamel
may be a decorative surface of metal, glass or pottery.
Porcelain
enamel while very durable is also expensive to apply and so is being
replaced by synthetic enamels or plastics in many appliances today, in such
places as cabinet sides, tops and doors. Range tops and ovens will remain
porcelain enamel because there is no good substitute presently to withstand
the high temperatures. Older appliances may have more porcelain enamel
surfaces.