You need to be more specific. There are steel handbooks available both in USA and Canada (and elsewhere) that list all avail. sections of beams along with their load carrying capacities.
in addition to what CVA1993 said:
load bearing is going to be *very* dependent upon the length of the beam you use (whether used as a beam, or as a column)
The longer the beam, the less load it can support, in general.
If you are not familiar with structural analysis, you should not, under any but the most immediate,god-help-us-but-it-has-to-lift-one-time-and-NOW circumstances, attempt to use quickie estimations of beam strength without an actual engineer reviewing the proposed structure.
Even if you did stay at a 'Select Inn' last night.
