Alloys na jan karfe da ke dauke da beryllium a matsayin babban abin da ake hadawa ana kiran su beryllium jan karfe.Beryllium jan ƙarfe shine mafi yawan amfani da su a cikin alluran beryllium, wanda ya kai fiye da kashi 90 cikin 100 na duk abubuwan da ake amfani da su na beryllium.Beryllium jan karfe gami an kasu kashi babban beryllium high ƙarfi gami (dauke da beryllium 1.6% -2%) da ƙananan beryllium high conductivity gami (dauke da beryllium 0.1% -0.7%) bisa ga abun ciki na beryllium.Abubuwan da ke cikin beryllium a cikin jerin gwanon jan karfe na beryllium gabaɗaya bai wuce 2%.A zamanin farko, tagulla na beryllium na kayan aikin soja ne, kuma aikace-aikacensa sun kasance cikin masana'antar soja kamar su jiragen sama, sararin samaniya, da makamai;a cikin shekarun 1970s, an fara amfani da allunan jan ƙarfe na beryllium a fagagen farar hula.Yanzu ana amfani da jan ƙarfe na beryllium sosai a cikin kayan lantarki, sadarwa, kwamfuta, wayar hannu da ainihin kayan aiki, da sauran aikace-aikace.An yi bazara da tagulla na beryllium, wanda ke da babban ma'auni na roba, kyakkyawan tsari, da tsawon rayuwar sabis;yana iya kashe zafi da gajiya yayin kera kayan aikin lantarki;Samun babban aminci da ƙarancin kayan aiki;kera maɓallan wutar lantarki, waɗanda ƙanana ne, haske, kuma suna da hankali sosai, kuma ana iya maimaita su sau miliyan 10.Tagulla na Beryllium shima yana da kyakyawar simintin gyare-gyare, yanayin zafi, da juriya.Yana da manufa simintin gyare-gyare da ƙirƙira kayan.Ana iya amfani da shi azaman kayan tsari don kayan aikin aminci, ƙayyadaddun simintin gyare-gyare, da maimaituwar igiyoyin sadarwa na ƙarƙashin teku.Hakanan za'a iya amfani dashi don ƙera madaidaicin madaidaicin, Ramin fim ɗin ƙirar ƙirar filastik tare da ƙayyadaddun tsari.