Idan aka kwatanta dakarfe na yau da kullun, Karfe na musamman yana da ƙarfin ƙarfi da ƙarfi, kaddarorin jiki, kaddarorin sinadarai, biocompatibility da aikin aiwatarwa. Amma karfe na musamman yana da wasu halaye daban-daban daga karfe na yau da kullun. Dominkarfe na yau da kullunmutane da yawa sun fi fahimta, amma ga halaye nakarfe na musamman, mutane da yawa sun ce sun fi rikicewa. Sabili da haka, labarin mai zuwa yana mai da hankali kan halayen ƙarfe na musamman.
Siffofin karfe na musamman:
Idan aka kwatanta dakarfe na yau da kullun, musamman karfe yana da halaye na high tsarki, high uniformity, matsananci-lafiya tsarin da high daidaici:
(1) Tsafta mai girma.Abubuwan da ke cikin iskar gas da abubuwan da aka haɗa (ciki har da haɗakar ƙarfe tare da ƙarancin narkewa) a cikin ƙarfe na iya ragewa. Lokacin da tsabtar ƙarfe ya ƙaru zuwa ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙarfe, ba wai kawai ainihin kaddarorin karfe ba za a iya ingantawa sosai, amma kuma ana iya ba da sabon kayan ƙarfe. Misali, iskar oxygen a cikin karfe mai ɗaukar nauyi yana raguwa daga 30 × 10-6 zuwa 5 × 10-6, kuma rayuwar ɗaukar nauyi tana ƙaruwa sau 30. Bakin karfe na austenitic na duniya ba su da kariya ga lalatawar danniya lokacin da abun ciki na phosphorus ya ragu zuwa 3 × 10-6. A karshen karni na 20, matakin tsarki (10) na karfe da za a iya samu ta hanyar samar da yawa shine: hydrogen ≤1, oxygen ≤5, carbon ≤10, sulfur ≤10, nitrogen ≤15, phosphorus ≤25.

(2) Babban daidaituwa.Rarraba abun da ke ciki na karfe yana kaiwa ga tsarin da ba daidai ba da kaddarorin karfe, wanda shine daya daga cikin mahimman dalilai na gazawar farko na sassan karfe da wahalar cikakken amfani da yuwuwar kaddarorin karfe. Fasaha samar da zamani ya kamata ya sa daidaitattun ƙarfe ya isa: kayan aikin ƙarfe ƙarfe ƙarfin ƙarfin bandeji shine ± 3HRC; Abubuwan da ke cikin carbon, nickel, molybdenum ≤± 0.01%, da manganese da chromium ≤± 0.02% an sarrafa su daidai. Girman hatsin ƙarfe mai ɗauke da ƙarfe bayan quenching yana da siffar siffa kuma girman girman 0.8± 0.2 μm The inji Properties na laminated hawaye resistant karfe (Z-direction karfe) a cikin a tsaye, m da kauri shugabanci, musamman roba da taurin bukatun ne gaba ɗaya kama.
(3) Tsari mai kyau.Ƙarfafa ƙananan ƙananan ƙananan ƙaƙƙarfan ƙaƙƙarfan tsari shine kawai hanyar ƙarfafawa wanda zai iya ƙara ƙarfin ƙarfe ba tare da raguwa ko ƙara dan kadan ba. Misali, lokacin da girman hatsi na babban ƙarfi bakin karfe AFC77 aka tace daga 60μm zuwa 2.3 μm, karaya taurin Kic yana ƙaruwa daga 100 zuwa 220MPa·m. The irradiated embrittlement zafin jiki na m-grained karfe farantin a nukiliya reactor matsa lamba jirgin ruwa ne 150 ~ 250 ℃ yayin da cewa na lafiya-grained karfe ne 50 ~ 70 ℃. Lokacin da girman carbide a cikin ƙarfe mai ɗaukar nauyi yana da kyau zuwa ≤0.5μm, za a inganta rayuwar ɗaukar nauyi sosai.
(4) Madaidaicin madaidaici.Ya kamata karafa na musamman su kasance suna da kyakkyawan ingancin farfajiya da kunkuntar juzu'i masu girma. Daidaiton sandar birgima mai zafi har zuwa ± 0.1mm, kauri haƙuri na zafi birgima takardar nada ne har zuwa ± 0.015 ~ 0.05mm, da kauri haƙuri da sanyi birgima takardar nada ne har zuwa ± 0.003mm.