Aluminum kura, mai iya fashewa, an kasafta shi azaman abu mai flammable Class II. Yana amsawa da ruwa don samar da iskar hydrogen da zafi.
Idan akwai fashewar ƙurar aluminum, amfani da ruwa don kashewa bai dace ba. Kumfa masu kashe wuta sune zaɓin da aka ba da shawarar (musamman wajen sarrafa bayanan martabar aluminum) kamar yadda kumfa ke ware wuta daga iska. Wannan shi ne saboda sinadarin aluminum da ruwa, wanda ke samarwa hydrogen gas, mayar da ruwa rashin tasiri don kashe wuta. An samu wani lamari inda wani fashewa ya tashi ta hanyar yunkurin kashe kurar aluminum da ta kona da ruwa.