Van De Stadt is a design house, one of theoldest. They do custom work and have stock designs, some of which can be built in different materials - wood, glass, steel, aluminum. Van de Stadt Design - Yacht Designers and Naval Architects
Here is one of their popular designs, the 34:
Here are the numbers. Notice the ballast weights and displacement for each material, showing steel as the worst choice based on sailing ability and the ability to stand up to her sail area.
Almost one ton heavier in steel with less ballast.