Sonoy
Waɗannan allury suna haifar da kusan 1% zuwa 5% na abubuwan da ƙarfe kuma galibi ana ƙara gwargwadon ikon samar da takamaiman sifa don amfanin su.
Sa Darasi na A193 B7 B7 Alloy Karfe Bolt kayan da ke amfani da shi a kai a kai a kai a kai a cikin masana'antar ginin. Babban masu hamada suna da 75ksistan ƙaramar yawan amfanin ƙasa. Akwai nau'ikan daban-daban kamar A193 Gr. B7 Created sanda wanda aka yi amfani da shi a cikin matsanancin matsin lamba, babban yanayin zafi. Astm A193 aji B7 Washers sune babban ƙarfin ƙwararrun karfe da aka ƙera daga ƙarfe chromium-molybdenum karfe kuma suna quenched da kuma suna quenched da kuma quenched da kuma suna quenched da kuma suna quenched da kuma suna quenched da kuma quented. Asme B18.31.2. Alamar alama ta ƙunshi alamun aji "B7" da alamar tantance mai masana'anta a ƙarshen ƙarshen kowace fitse na 3 \ / 8 "diamita da girma.