ühefaasiline kuni 39 % Zn-sisaldusega (ka muude legeerelementidega) tardlahuse struktuuriga vasetsingisulam (vt messing; vrd β-messing, α+β-messing), a copper-zinc alloy (brass) with single-phase solid solution consisting up to 38% zinc; ; consists constitutionally of a solid solution of zink in copper (see: brass; compare: beta brass, alpha-beta brass)