O nilo lati koju ipata ti awọn oriṣiriṣi acids gẹgẹbi oxalic acid, sulfuric acid-iron sulfate, nitric acid, acid nitric-hydrofluoric, sulfuric acid-copper sulfate, phosphoric acid, formic acid, acetic acid ati awọn acids miiran. O ti wa ni lilo pupọ ni ile-iṣẹ kemikali, ounjẹ, oogun, ṣiṣe iwe, epo epo, agbara atomiki, bbl Ile-iṣẹ, bii ọpọlọpọ awọn ẹya ati awọn paati fun ikole, awọn ohun elo ibi idana ounjẹ, awọn ohun elo tabili, awọn ọkọ, ati awọn ohun elo ile. Lati rii daju pe awọn ohun-ini ẹrọ bii agbara ikore, agbara fifẹ, elongation ati líle ti ọpọlọpọ awọn awo irin alagbara, irin ni ibamu pẹlu awọn ibeere, awọn abọ irin gbọdọ faragba awọn itọju ooru gẹgẹbi annealing, itọju ojutu, ati itọju ti ogbo ṣaaju ifijiṣẹ.