He aha ka mea e ʻokoʻa ai ke kila kila a me ke kila

He hao wale ke kila me ka hapa iki o ke kalapona. Hoʻopaʻa maʻalahi ia (rusts). Ua hoʻohui ʻia ka chromium i ke kila kila, akā aia kekahi o kēia mau mea: nickel, niobium, molybdenum, a i ʻole titanium. Hoʻokumu ʻia nā kila kila i kahi ʻāpana lahilahi o ka chromium oxide ma ka ʻili e pale ai iā ia mai ka hoʻoneʻe hou ʻana. ʻOiai ʻaʻole hiki ke hoʻopaʻa ʻia ka stainless, ʻoi aku ka liʻiliʻi ma mua o ke kila kalapona. ʻO ka hapa nui o nā kila kuhili ʻole, ʻaʻole magnetic, a nāwaliwali loa paha.