Steel beams can bear more weight than wood, making it possible to construct large open spaces that would not be possible using wood.
Universal Beam (UB), Rolled Steel Joist (RSJ)
The main factor in the cost of an I-beam is its height and weight per linear foot. The smaller that number is, the less expensive the beam will be.
Costs vary greatly by region (and even by zip code). To get free estimates from local contractors, please indicate yours.