Prior to version 1.5.1, a non-electric metalwork bench could be used to make ten elevator shafts for one block of steel and ten copper wires, which was more steel-efficient than an electric metalwork bench.
Uses
Steel blocks are useful in construction, and placing one will produce an achievement. They are also conductive and can be used to transfer electricity through blocks. They are useful in the creation of barriers resistant to intrusion during multiplayer sessions, taking over one-and-a-half hours to break a steel block by hand. Only titanium and carbon fiber blocks are more durable.