ʻO ka papa kila kila he huaʻōlelo maʻamau no ka papa kila kila a me ka papa kila kūpaʻa waikawa. I ka hoʻomaka ʻana o kēia kenekulia, ua hoʻokumu ka hoʻomohala ʻana o ka papa kila kila i kahi mea koʻikoʻi a me ke kahua ʻenehana no ka hoʻomohala ʻana i ka ʻoihana hou a me ka holomua ʻepekema a me ka ʻenehana. Nui nā ʻano papa kila kila me nā waiwai like ʻole, a ua hoʻokumu mālie ia i kekahi mau mahele i ke kaʻina hana hoʻomohala. Wahi a ke ʻano, ua māhele ʻia i ʻehā mau mahele: ka papa kila kila austenitic, ka papa kila kila martensitic (me ka papa kila kila paʻakikī), ka papa kila kila ferritic, a me ka papa kila kila duplex austenitic ferritic. Wahi a ke ʻano kemika nui o ka papa kila a i ʻole kekahi mau mea hiʻohiʻona i loko o ka papa kila e hoʻokaʻawale, ua māhele ʻia i ka papa kila kila chromium, ka papa kila kila nickel chromium, ka papa kila kila nickel chromium a me ka papa kila kila kalapona haʻahaʻa, ka papa kila kila molybdenum kiʻekiʻe, ka papa kila kila maʻemaʻe kiʻekiʻe a pēlā aku. Wahi a nā ʻano hana a me nā hoʻohana ʻana o ka papa kila, ua māhele ʻia i ka papa kila kila kūpaʻa i ka waikawa nitric, ka papa kila kila kūpaʻa i ka waikawa sulfuric, ka papa kila kila pitting, ka papa kila kila kūpaʻa i ka corrosion stress, ka papa kila kila ikaika kiʻekiʻe a pēlā aku. Wahi a nā ʻano hana o ka papa kila, ua māhele ʻia i ka papa kila kila haʻahaʻa wela, ka papa kila kila ʻaʻohe magnetic, ka papa kila kila ʻoki maʻalahi, ka papa kila kila plastik super. Hoʻokaʻawale ʻia ke ʻano hoʻokaʻawale maʻamau e like me nā ʻano kūkulu o ka papa kila a me nā ʻano hoʻohui kemika o ka papa kila a me ka hui pū ʻana o nā ʻano ʻelua. Ma ke ʻano laulā, ua māhele ʻia i ka papa kila kila martensitic, ka papa kila kila ferritic, ka papa kila kila austenitic, ka papa kila kila duplex a me ka papa kila kila ʻano paʻakikī a i ʻole ua māhele ʻia i ka papa kila kila chromium a me ka papa kila kila nickel ʻelua mau ʻāpana. Nā hoʻohana maʻamau: nā lako pulp a me ka pepa Mea hoʻololi wela, nā lako mīkini, nā lako hoʻoluʻu, nā lako holoi kiʻiʻoniʻoni, nā pipelines, nā mea kūkulu hale ma waho o ke kahakai, a pēlā aku.
He laumania ka ʻili o ka papa kila kila, he plasticity kiʻekiʻe, paʻakikī a me ka ikaika mechanical, a kūpaʻa i ka waikawa, ke kinoea alkaline, ka hopena a me nā mea ʻē aʻe e pala ai. He kila hui ia ʻaʻole maʻalahi ke popo, akā ʻaʻole ia he mea ʻole loa.