Ua māhele ʻia ke alahao kila i nā alahao kaʻaahi, nā alahao māmā, nā alahao alakaʻi a me nā alahao crane. ʻO ke ʻano ʻāpana kea o ke alahao ua hana ʻia me ka ʻāpana ʻano I me ka hana kūlou maikaʻi loa, ke poʻo o ke alahao, ka pūhaka o ke alahao a me ka lalo o ke alahao.
(1) alahao kila no ke alahao
Hoʻomohala ʻia nā alahao kila haʻahaʻa ma ke kumu o nā alahao kalapona. ʻOi aku ka ikaika o ke alahao kalapona kiʻekiʻe a me ke kila haʻahaʻa, ʻoi aku ka maikaʻi o ke kūpaʻa ʻana i ka ʻaʻahu, ke kūpaʻa ʻana i ke kaomi, ke kūpaʻa i ka haki palupalu a me ke kūpaʻa i ka luhi ma mua o ke alahao kalapona. ʻO nā ʻano alahao no ka hoʻohana ʻana i ke alahao he 38, 43, 50, 60 a me 75kg/m, a pēlā aku. Pono e uku ʻia ka nānā kūikawā e pale aku i nā kiko keʻokeʻo i ka wā o ka hana ʻana i ke alahao.
(2) Alanui kila māmā
Hoʻohana nui ʻia ia i ka hana ʻeli ʻana a me ka ululāʻau, a ʻo kona mau ʻano he 5,8,11,15,18 a me 24 kg/m. Hana nui ʻia ke alahao kila māmā i ke kila kalapona, a hana ʻia kekahi mau mea i ke kila hao haʻahaʻa. Pono nā alahao kila māmā i hoʻohana ʻia i nā lua ʻeli, nā wahi lepo a me nā wahi ululāʻau i ke kūpaʻa i ka pala, no laila hoʻohui ʻia nā mea hao kūpono e like me ke keleawe, chromium, phosphorus a me vanadium i ke kila.
(3) Alanui kila alakaʻi
Pono ke alahao kila i hoʻohana ʻia no ka hoʻokele uila ma ke alahao lalo o ka honua i ka conductivity maikaʻi, ʻo ia hoʻi, ʻoi aku ka emi o ka resistivity ma 15 ℃ ma mua o 0.125 μ ω m. Hana ʻia ia me ke kila alumini haʻahaʻa kalapona kiʻekiʻe.
(4) Alanui kila crane
ʻO ke ʻano kemika a me ke kaʻina hana o nā ala kila ʻāpana kūikawā i hoʻohana ʻia no nā ala alakaʻi crane like ʻole e like me nā ala kaʻaahi kila. ʻO nā ʻano like ʻole ʻo QU70, QU80, QUl00, QUl20 a pēlā aku.