vase-tsingisulamid tsingisisaldusega 46-49 %, mis koosneb toatemperatuuril intermetallilisest ühendist (tuntud beetana) (vt messing; vrd α-messing, α+β-messing), copper-zinc alloys, containing 46-49 % of zinc, which consist (at room temperature) of the intermediate constituent (or intermetallic compound) known as beta (see: brass; compare: beta brass, alpha-beta brass)