I-ALLOY 904L • UNS N08904 • WNR 1.4539

I-UNS NO8904, evame ukubizwa ngokuthi 904L, iyinsimbi engagqwali ephansi ye-carbon high alloy austenitic esetshenziswa kakhulu ezinhlelweni lapho izakhiwo zokugqwala ze-AISI 316L ne-AISI 317L zinganele.

Ukwengezwa kwethusi kuleli banga kulinikeza izakhiwo ezimelana nokugqwala okuphakeme kunezinsimbi ezingenasici ze-chrome ze-nickel, ikakhulukazi kune-sulphuric, phosphoric kanye ne-acetic acid. Nokho, kukhona ukusetshenziswa okulinganiselwe nge-hydrochloric acid. Futhi inokumelana okuphezulu nokufaka izixazululo ze-chloride, ukumelana okuphezulu kukho kokubili ukuqhekeka nokugqwala kwengcindezi. I-alloy 904L isebenza kangcono kunezinye izinsimbi ezingenasici ze-austenitic ngenxa yokuhlanganiswa okuphezulu kwe-nickel ne-molybdenum.