The right sink for a construction or remodeling project, depends upon its primary use. Enamel and porcelain provide a similar look but offer different advantages and disadvantages.
Enamel sinks are actually a solid surface (usually cast iron or steel) coated with enamel. If the foundation of the sink is cast iron, it will tend to be very durable, though the surface can chip if hit hard enough. Enamel-over-steel is less durable and typically a low-end option.
Although some porcelain sinks are actually porcelain coatings over a solid surface, others are completely porcelain fabricated. Porcelain-over-cast-iron is equivalent to enamel, in that the solid foundation is highly durable and heavy.
Both porcelain and enamel sinks come in designs to suit nearly any style. Porcelain sinks are usually available in more colors. Enamel sinks are offered in fewer design options, but they generally run at the lower price end in each category.
The cost to purchase a new sink can range from under $100 to several thousand dollars, depending primarily on the material you choose. Both porcelain and enamel options typically average $250 to $350 for popular models.
In general, both porcelain and enamel are easily cleaned and highly durable. Porcelain on cast iron tends to be a tougher surface than enamel on either cast iron or stainless steel, so it is more resistant to abuse.