Ibyuma bidafite ibyuma ni ibikoresho bikozwe mubyuma bidafite ingese, ubwoko bwibyuma bivangwa na chromium, bitanga imbaraga zo kurwanya ruswa.
Ibyuma bidafite ibyuma bikoreshwa mu nganda zitandukanye no mu bikorwa aho kurwanya ingese, kwanduza, no kwangirika ari ngombwa. Bazwiho kuramba, imbaraga, nubushobozi bwo guhangana nibidukikije bikaze.
Ibi bikoresho bikunze gukoreshwa mubikoresho bitunganya ibiryo, imashini zikoresha imiti, gukoresha inyanja, nizindi nganda aho isuku no kurwanya ruswa ari ngombwa.