ʻO ke kila kila ʻo ia ka pōkole no ke kila kūpaʻa waikawa kila. Ua kapa ʻia ʻo ia he kila kila me ka medium corrosive nāwaliwali a i ʻole ke kila kila, e like me ka ea, ka mahu a me ka wai. ʻO ke ʻano kila e hōʻino i ka medium corrosive kemika (ʻakika, alkali, paʻakai, a me nā mea ʻē aʻe) ua kapa ʻia ʻo ke kila kūpaʻa waikawa.
Wahi a ke kūlana o ka hui, hiki ke hoʻokaʻawale ʻia i ke kila martensitic, ke kila ferritic, ke kila austenitic, ke kila austenite - ferrite (pālua) a me ke kila kila paʻakikī. Eia kekahi, hiki ke hoʻokaʻawale ʻia i ke kila kila chromium, ke kila kila nickel chromium a me ke kila kila manganese nitrogen chromium e like me kona ʻano.
ʻAʻole wale ka huaʻōlelo "kila kila" i kapa ʻia he kila kila maʻemaʻe akā ʻoi aku ma mua o hoʻokahi haneli ʻano o ka ʻoihana kila kila. A ʻo ka hoʻomohala ʻana o kēlā me kēia kila kila he hana maikaʻi i kā lākou mau noi kikoʻī. No laila, ʻo ka hana mua, ʻo ia ke ʻike i ka hoʻohana ʻana, a laila e hoʻoholo i ke ʻano kila kūpono e like me nā ʻano o kēlā me kēia ʻano kila kila.
Ma muli o kona kūpaʻa maikaʻi loa i ka pala, ka launa pū ʻana a me ka ductility ikaika i ka laulā o ka mahana, he mea maka maikaʻi loa ke kila kila no nā mea hoʻolako sila.
