Siffofi: Babban sinadarin carbon mai ƙarfi, ƙarancin toka, babban ƙarfin lantarki da zafi. Ƙarancin sulfur, ƙarancin porosity da ƙarancin abun ciki mai canzawa. Busassun barbashi masu tsabta da matsakaici.
Girman: 0.2-2mm, 1-5mm, 3-8mm, 5-15mm bisa ga buƙatun abokin ciniki.
Marufi: a cikin ƙaramin jaka mai nauyin 25kg, babban jaka mai nauyin 1mt, ko kuma bisa ga buƙatar mai siye.
