1. Karfe don janar ƙarfin hull tsarin
The general ƙarfi karfe for hull tsarin ya kasu kashi hudu maki: A, B, D da E. Yawan amfanin ƙasa ƙarfi (ba kasa da 235N/mm^2) na wadannan hudu maki na karfe ne daidai da tensile ƙarfi (400～ 520N/mm^2). , amma tasirin tasiri a yanayin zafi daban-daban ya bambanta;
Ƙarfe mai ƙarfi mai ƙarfi ya kasu kashi-kashi mai ƙarfi bisa ga mafi ƙarancin ƙarfin yawan amfanin ƙasa, kuma kowane ƙarfin ƙarfin ya kasu kashi A, D, E, F4 bisa ga ƙarfin tasirin sa.
Ƙarfin da ake samu na A32, D32, E32, da F32 bai wuce 315N/mm^2 ba, kuma ƙarfin ƙarfin ƙarfi shine 440-570N/mm^2. Ƙarfin tasiri wanda za'a iya samu a -40 °, -60 °;
Ƙarfin da ake samu na A36, D36, E36 da F36 bai wuce 355N/mm^2 ba, kuma ƙarfin ƙarfin ƙarfi shine 490～620N/mm^2. Ƙarfin tasiri wanda za'a iya samu a -40 °, -60 °;
Ƙarfin da ake samu na A40, D40, E40, da F40 bai wuce 390N/mm^2 ba, kuma ƙarfin ƙarfin ƙarfi shine 510 ~ 660N/mm^2. Taurin tasirin da za a iya samu a -40 ° da -60 °.
banda haka,
Ƙarfin ƙarfi mai ƙarfi da ƙarfin ƙarfe don tsarin welded: A420, D420, E420, F420; A460, D460, E460, F460; A500, D500, E500, F500; A550, D550, E550, F550; A620, D620, E620, F620; A690, D690, E690, F690;
Karfe don tukunyar jirgi da tasoshin matsa lamba: 360A, 360B; 410A, 410B; 460A, 460B; 490A, 490B; 1Cr0.5Mo, 2.25Cr1Mo
Karfe don tsarin injiniya: Gabaɗaya, ana iya amfani da ƙarfe na sama;
Ƙarfin ƙarancin zafin jiki: 0.5NiA, 0.5NiB, 1.5Ni, 3.5Ni, 5Ni, 9Ni;
Austenitic bakin karfe: 00Cr18Ni10, 00Cr18Ni10N, 00Cr17Ni14Mo2, 00Cr17Ni13Mo2N, 00Cr19Ni13Mo3, 00Cr19Ni13Mo3N, 0Cr18Ni11Nb;
Duplex bakin karfe: 00Cr22Ni5Mo3N, 00Cr25Ni6Mo3Cu, 00Cr25Ni7Mo4N3.
Farantin karfe mai sutura: dace da kwantena da tankunan jigilar kayayyaki na masu sinadarai;
Karfe-direction: Karfe ne da aka yi masa magani na musamman (kamar maganin calcium, vacuum degassing, argon stirring, da dai sauransu) da kuma maganin zafin da ya dace bisa wani nau'in ƙarfe na tsari (wanda ake kira iyaye karfe).
