Uea kila kilahe ʻano huahana kilika o nā kikoʻī like ʻole a me nā hiʻohiʻona i hana ʻia me ke kila kila, a ʻo ka ʻāpana keʻa he poepoe a pālahalaha paha. ʻO nā uea kila kuhili ʻole maʻamau me ke kūpaʻa corrosion maikaʻi a me ka hana kiʻekiʻe o ke kumu kūʻai he 304 a me 316 mau uea kuhili.