ʻO ka pā kila kila ka huaʻōlelo maʻamau no ka pā kila kila a me ka pā kila-ʻakika.ʻO ka pā kila kila he ʻili maʻemaʻe, ka plasticity kiʻekiʻe, ka paʻakikī a me ka ikaika mechanical, a kūpaʻa i ka corrosion e nā waikawa, nā kinoea alkaline, nā hopena a me nā media ʻē aʻe.He kila kila ʻaʻole maʻalahi i ka ʻōpala, akā ʻaʻole ia he ʻeleʻele loa.ʻO ka pā kila kila e pili ana i ka pā kila kūpaʻa i ka corrosion e nā media palupalu e like me ka lewa, ka mahu a me ka wai, aʻo ka ʻakika kūpaʻa ʻana i ka pā kila e pili ana i ka pā kila kūʻē i ka corrosion e nā media corrosive kemika e like me ka waikawa, ka alkali a me ka paʻakai.ʻOi aku ka mōʻaukala o ka pā kila kila ma mua o hoʻokahi kenekulia mai kona puka ʻana mai i ka hoʻomaka ʻana o ke kenekulia 20.