Alloy Karfe ya kasu kashi biyu: Girma Girma Karfe da ƙananan-Olioy Karfe. Low alloy karfe sakin fuska, a gefe guda, ya ƙunshi kusan 0.05 ¨c 0.25% carbon kuma har zuwa 2.0% Mangon. Low alloy sanduna dauke da adadin wadanda suka yi wa] enoying wakilai kamar niobium, titanium, vromium, vromium, comminium, molybdenum, abubuwan duniya. Don ƙarfafa flanges na Chromium Alloy flanges, abubuwa kamar jan ƙarfe, titanium, veradium an kara su zuwa ga alloy.